---
_id: '8939'
author:
- first_name: Karl
  full_name: Popp, Karl
  last_name: Popp
- first_name: Lars
  full_name: Panning, Lars
  last_name: Panning
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
citation:
  ama: Popp K, Panning L, Sextro W. Vibration Damping by Friction Forces -Theory and
    Applications. <i>Journal of Vibration and Control</i>. 2003;9:419-448.
  apa: Popp, K., Panning, L., &#38; Sextro, W. (2003). Vibration Damping by Friction
    Forces -Theory and Applications. <i>Journal of Vibration and Control</i>, <i>9</i>,
    419–448.
  bibtex: '@article{Popp_Panning_Sextro_2003, title={Vibration Damping by Friction
    Forces -Theory and Applications}, volume={9}, journal={Journal of Vibration and
    Control}, author={Popp, Karl and Panning, Lars and Sextro, Walter}, year={2003},
    pages={419–448} }'
  chicago: 'Popp, Karl, Lars Panning, and Walter Sextro. “Vibration Damping by Friction
    Forces -Theory and Applications.” <i>Journal of Vibration and Control</i> 9 (2003):
    419–48.'
  ieee: K. Popp, L. Panning, and W. Sextro, “Vibration Damping by Friction Forces
    -Theory and Applications,” <i>Journal of Vibration and Control</i>, vol. 9, pp.
    419–448, 2003.
  mla: Popp, Karl, et al. “Vibration Damping by Friction Forces -Theory and Applications.”
    <i>Journal of Vibration and Control</i>, vol. 9, 2003, pp. 419–48.
  short: K. Popp, L. Panning, W. Sextro, Journal of Vibration and Control 9 (2003)
    419–448.
date_created: 2019-04-15T10:42:34Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
intvolume: '         9'
language:
- iso: eng
page: 419-448
publication: Journal of Vibration and Control
quality_controlled: '1'
status: public
title: Vibration Damping by Friction Forces -Theory and Applications
type: journal_article
user_id: '55222'
volume: 9
year: '2003'
...
---
_id: '8940'
author:
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
- first_name: Karl
  full_name: Popp, Karl
  last_name: Popp
citation:
  ama: 'Sextro W, Popp K. Optimierung des Schwingungsverhaltens elastischer Strukturen
    mit Reibfugen am Beispiel von Turbomaschinenschaufeln. In: <i>Forschungsvereinigung
    Verbrennungskraftmaschinen (FW)</i>. Frankfurt am Main, Germany; 2003:40.'
  apa: Sextro, W., &#38; Popp, K. (2003). Optimierung des Schwingungsverhaltens elastischer
    Strukturen mit Reibfugen am Beispiel von Turbomaschinenschaufeln. In <i>Forschungsvereinigung
    Verbrennungskraftmaschinen (FW)</i> (p. 40). Frankfurt am Main, Germany.
  bibtex: '@inproceedings{Sextro_Popp_2003, place={Frankfurt am Main, Germany}, title={Optimierung
    des Schwingungsverhaltens elastischer Strukturen mit Reibfugen am Beispiel von
    Turbomaschinenschaufeln}, number={753}, booktitle={Forschungsvereinigung Verbrennungskraftmaschinen
    (FW)}, author={Sextro, Walter and Popp, Karl}, year={2003}, pages={40} }'
  chicago: Sextro, Walter, and Karl Popp. “Optimierung Des Schwingungsverhaltens Elastischer
    Strukturen Mit Reibfugen Am Beispiel von Turbomaschinenschaufeln.” In <i>Forschungsvereinigung
    Verbrennungskraftmaschinen (FW)</i>, 40. Frankfurt am Main, Germany, 2003.
  ieee: W. Sextro and K. Popp, “Optimierung des Schwingungsverhaltens elastischer
    Strukturen mit Reibfugen am Beispiel von Turbomaschinenschaufeln,” in <i>Forschungsvereinigung
    Verbrennungskraftmaschinen (FW)</i>, 2003, no. 753, p. 40.
  mla: Sextro, Walter, and Karl Popp. “Optimierung Des Schwingungsverhaltens Elastischer
    Strukturen Mit Reibfugen Am Beispiel von Turbomaschinenschaufeln.” <i>Forschungsvereinigung
    Verbrennungskraftmaschinen (FW)</i>, no. 753, 2003, p. 40.
  short: 'W. Sextro, K. Popp, in: Forschungsvereinigung Verbrennungskraftmaschinen
    (FW), Frankfurt am Main, Germany, 2003, p. 40.'
date_created: 2019-04-15T10:43:35Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
issue: '753'
language:
- iso: eng
page: '40'
place: Frankfurt am Main, Germany
publication: Forschungsvereinigung Verbrennungskraftmaschinen (FW)
status: public
title: Optimierung des Schwingungsverhaltens elastischer Strukturen mit Reibfugen
  am Beispiel von Turbomaschinenschaufeln
type: conference
user_id: '55222'
year: '2003'
...
---
_id: '8941'
abstract:
- lang: eng
  text: Numerical predictions of the forced vibration of a disc assembly including
    frictional effects between the shrouds are presented concerning engineering needs
    for the blade design process. Assuming a tuned disc assembly, numerical static,
    free and then forced vibration analyses of a shrouded turbine blade measured in
    the spin pit are performed systematically. For the excitation forces of an air
    jet evaluated from the fairly linear behavior of the experimental blade resonance
    peaks, the reliability of the proposed approach is validated through the very
    close agreement of the computed and measured resonant peaks. These resonant peaks
    demonstrate either a fairly linear behavior or a non-linear one like the jump
    effect of blade resonance amplitudes, or elastic impacts between the shrouds.
    Also, the damping performance for different contact configurations between the
    shrouds is numerically analyzed. These numerical results indicate that the shrouds
    generate higher frictional damping for small angles (0--30 deg) between the circumferential
    direction and the normal vector to the contact surface. Copyright {\copyright}
    2003 by ASME
author:
- first_name: J
  full_name: Szwedowicz, J
  last_name: Szwedowicz
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
- first_name: R
  full_name: Visser, R
  last_name: Visser
- first_name: P.A
  full_name: Masserey, P.A
  last_name: Masserey
citation:
  ama: 'Szwedowicz J, Sextro W, Visser R, Masserey P. On forced vibration of shrouded
    turbine blades. In: <i>ASME Turbo Expo 2003, Collocated with the 2003 International
    Joint Power Generation Conference</i>. Atlanta, Georgia, USA; 2003. doi:<a href="https://doi.org/doi:10.1115/GT2003-38808">doi:10.1115/GT2003-38808</a>'
  apa: Szwedowicz, J., Sextro, W., Visser, R., &#38; Masserey, P. . (2003). On forced
    vibration of shrouded turbine blades. In <i>ASME Turbo Expo 2003, collocated with
    the 2003 International Joint Power Generation Conference</i>. Atlanta, Georgia,
    USA. <a href="https://doi.org/doi:10.1115/GT2003-38808">https://doi.org/doi:10.1115/GT2003-38808</a>
  bibtex: '@inproceedings{Szwedowicz_Sextro_Visser_Masserey_2003, place={Atlanta,
    Georgia, USA}, title={On forced vibration of shrouded turbine blades}, DOI={<a
    href="https://doi.org/doi:10.1115/GT2003-38808">doi:10.1115/GT2003-38808</a>},
    number={GT2003-38808}, booktitle={ASME Turbo Expo 2003, collocated with the 2003
    International Joint Power Generation Conference}, author={Szwedowicz, J and Sextro,
    Walter and Visser, R and Masserey, P.A}, year={2003} }'
  chicago: Szwedowicz, J, Walter Sextro, R Visser, and P.A Masserey. “On Forced Vibration
    of Shrouded Turbine Blades.” In <i>ASME Turbo Expo 2003, Collocated with the 2003
    International Joint Power Generation Conference</i>. Atlanta, Georgia, USA, 2003.
    <a href="https://doi.org/doi:10.1115/GT2003-38808">https://doi.org/doi:10.1115/GT2003-38808</a>.
  ieee: J. Szwedowicz, W. Sextro, R. Visser, and P. . Masserey, “On forced vibration
    of shrouded turbine blades,” in <i>ASME Turbo Expo 2003, collocated with the 2003
    International Joint Power Generation Conference</i>, 2003, no. GT2003-38808.
  mla: Szwedowicz, J., et al. “On Forced Vibration of Shrouded Turbine Blades.” <i>ASME
    Turbo Expo 2003, Collocated with the 2003 International Joint Power Generation
    Conference</i>, no. GT2003-38808, 2003, doi:<a href="https://doi.org/doi:10.1115/GT2003-38808">doi:10.1115/GT2003-38808</a>.
  short: 'J. Szwedowicz, W. Sextro, R. Visser, P.. Masserey, in: ASME Turbo Expo 2003,
    Collocated with the 2003 International Joint Power Generation Conference, Atlanta,
    Georgia, USA, 2003.'
date_created: 2019-04-15T10:44:50Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
doi: doi:10.1115/GT2003-38808
issue: GT2003-38808
keyword:
- Turbine blades
- Vibration
language:
- iso: eng
place: Atlanta, Georgia, USA
publication: ASME Turbo Expo 2003, collocated with the 2003 International Joint Power
  Generation Conference
publication_identifier:
  eisbn:
  - 0-7918-3671-1
  isbn:
  - 0-7918-3687-8
status: public
title: On forced vibration of shrouded turbine blades
type: conference
user_id: '55222'
year: '2003'
...
---
_id: '8926'
abstract:
- lang: eng
  text: Piezoelectric transformers are well known since the publication of some patent
    applications at the end of the 1950s. But until today their only business use
    lies in the field of backlighting systems for LCDs. Due to key features as light-weight,
    flatness, high step-up at low volume and high efficiency piezoelectric transformers
    should be usable in a much broader range of applications. This contribution returns
    to mind their operating principle, shows how to model and to develop such devices
    as well as give some aspects for development trends that will lead to further
    applications.
author:
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: Walter
  full_name: Littmann, Walter
  last_name: Littmann
- first_name: Jörg
  full_name: Wallaschek, Jörg
  last_name: Wallaschek
citation:
  ama: 'Hemsel T, Littmann W, Wallaschek J. Piezoelectric transformers - state of
    the art and development trends. In: <i>Ultrasonics Symposium, 2002. Proceedings.
    2002 IEEE</i>. Vol 1. ; 2002:645-648. doi:<a href="https://doi.org/10.1109/ULTSYM.2002.1193485">10.1109/ULTSYM.2002.1193485</a>'
  apa: Hemsel, T., Littmann, W., &#38; Wallaschek, J. (2002). Piezoelectric transformers
    - state of the art and development trends. In <i>Ultrasonics Symposium, 2002.
    Proceedings. 2002 IEEE</i> (Vol. 1, pp. 645–648). <a href="https://doi.org/10.1109/ULTSYM.2002.1193485">https://doi.org/10.1109/ULTSYM.2002.1193485</a>
  bibtex: '@inproceedings{Hemsel_Littmann_Wallaschek_2002, title={Piezoelectric transformers
    - state of the art and development trends}, volume={1}, DOI={<a href="https://doi.org/10.1109/ULTSYM.2002.1193485">10.1109/ULTSYM.2002.1193485</a>},
    number={vol.1}, booktitle={Ultrasonics Symposium, 2002. Proceedings. 2002 IEEE},
    author={Hemsel, Tobias and Littmann, Walter and Wallaschek, Jörg}, year={2002},
    pages={645–648} }'
  chicago: Hemsel, Tobias, Walter Littmann, and Jörg Wallaschek. “Piezoelectric Transformers
    - State of the Art and Development Trends.” In <i>Ultrasonics Symposium, 2002.
    Proceedings. 2002 IEEE</i>, 1:645–48, 2002. <a href="https://doi.org/10.1109/ULTSYM.2002.1193485">https://doi.org/10.1109/ULTSYM.2002.1193485</a>.
  ieee: T. Hemsel, W. Littmann, and J. Wallaschek, “Piezoelectric transformers - state
    of the art and development trends,” in <i>Ultrasonics Symposium, 2002. Proceedings.
    2002 IEEE</i>, 2002, vol. 1, no. vol.1, pp. 645–648.
  mla: Hemsel, Tobias, et al. “Piezoelectric Transformers - State of the Art and Development
    Trends.” <i>Ultrasonics Symposium, 2002. Proceedings. 2002 IEEE</i>, vol. 1, no.
    vol.1, 2002, pp. 645–48, doi:<a href="https://doi.org/10.1109/ULTSYM.2002.1193485">10.1109/ULTSYM.2002.1193485</a>.
  short: 'T. Hemsel, W. Littmann, J. Wallaschek, in: Ultrasonics Symposium, 2002.
    Proceedings. 2002 IEEE, 2002, pp. 645–648.'
date_created: 2019-04-15T10:18:15Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
doi: 10.1109/ULTSYM.2002.1193485
intvolume: '         1'
issue: vol.1
keyword:
- piezoelectric devices
- reviews
- transformers
- backlighting systems
- flatness
- high efficiency piezoelectric transformers
- high step-up
- light-weight
- low volume
- operating principle
- piezoelectric transformers
- Circuits
- Costs
- Electromagnetic devices
- Electromagnetic fields
- Mechanical energy
- Piezoelectric materials
- Power electronics
- Switching frequency
- Transformers
- Vibrations
language:
- iso: eng
page: 645-648
publication: Ultrasonics Symposium, 2002. Proceedings. 2002 IEEE
publication_identifier:
  issn:
  - 1051-0117
status: public
title: Piezoelectric transformers - state of the art and development trends
type: conference
user_id: '55222'
volume: 1
year: '2002'
...
---
_id: '8927'
author:
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: Walter
  full_name: Littmann, Walter
  last_name: Littmann
- first_name: Jörg
  full_name: Wallaschek, Jörg
  last_name: Wallaschek
citation:
  ama: 'Hemsel T, Littmann W, Wallaschek J. Piezoelektrische Transformatoren - Bauformen
    und Modellierung. In: <i>47. Internationales Wissenschaftliches Kolloquium</i>.
    ; 2002.'
  apa: Hemsel, T., Littmann, W., &#38; Wallaschek, J. (2002). Piezoelektrische Transformatoren
    - Bauformen und Modellierung. In <i>47. Internationales Wissenschaftliches Kolloquium</i>.
  bibtex: '@inproceedings{Hemsel_Littmann_Wallaschek_2002, title={Piezoelektrische
    Transformatoren - Bauformen und Modellierung}, booktitle={47. Internationales
    Wissenschaftliches Kolloquium}, author={Hemsel, Tobias and Littmann, Walter and
    Wallaschek, Jörg}, year={2002} }'
  chicago: Hemsel, Tobias, Walter Littmann, and Jörg Wallaschek. “Piezoelektrische
    Transformatoren - Bauformen Und Modellierung.” In <i>47. Internationales Wissenschaftliches
    Kolloquium</i>, 2002.
  ieee: T. Hemsel, W. Littmann, and J. Wallaschek, “Piezoelektrische Transformatoren
    - Bauformen und Modellierung,” in <i>47. Internationales Wissenschaftliches Kolloquium</i>,
    2002.
  mla: Hemsel, Tobias, et al. “Piezoelektrische Transformatoren - Bauformen Und Modellierung.”
    <i>47. Internationales Wissenschaftliches Kolloquium</i>, 2002.
  short: 'T. Hemsel, W. Littmann, J. Wallaschek, in: 47. Internationales Wissenschaftliches
    Kolloquium, 2002.'
date_created: 2019-04-15T10:20:55Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
language:
- iso: eng
publication: 47. Internationales Wissenschaftliches Kolloquium
status: public
title: Piezoelektrische Transformatoren - Bauformen und Modellierung
type: conference
user_id: '55222'
year: '2002'
...
---
_id: '8928'
author:
- first_name: Lars
  full_name: Panning, Lars
  last_name: Panning
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
- first_name: Karl
  full_name: Popp, Karl
  last_name: Popp
citation:
  ama: 'Panning L, Sextro W, Popp K. Optimization of the Contact Geometry between
    Turbine Blades and Underplatform Dampers with respect to Friction Damping. In:
    <i>Proceedings of ASME TURBO Expo, Power for Land, Sea, and Air</i>. Amsterdam,
    Niederlande; 2002.'
  apa: Panning, L., Sextro, W., &#38; Popp, K. (2002). Optimization of the Contact
    Geometry between Turbine Blades and Underplatform Dampers with respect to Friction
    Damping. In <i>Proceedings of ASME TURBO Expo, Power for Land, Sea, and Air</i>.
    Amsterdam, Niederlande.
  bibtex: '@inproceedings{Panning_Sextro_Popp_2002, place={Amsterdam, Niederlande},
    title={Optimization of the Contact Geometry between Turbine Blades and Underplatform
    Dampers with respect to Friction Damping}, number={GT-2002-30429}, booktitle={Proceedings
    of ASME TURBO Expo, Power for Land, Sea, and Air}, author={Panning, Lars and Sextro,
    Walter and Popp, Karl}, year={2002} }'
  chicago: Panning, Lars, Walter Sextro, and Karl Popp. “Optimization of the Contact
    Geometry between Turbine Blades and Underplatform Dampers with Respect to Friction
    Damping.” In <i>Proceedings of ASME TURBO Expo, Power for Land, Sea, and Air</i>.
    Amsterdam, Niederlande, 2002.
  ieee: L. Panning, W. Sextro, and K. Popp, “Optimization of the Contact Geometry
    between Turbine Blades and Underplatform Dampers with respect to Friction Damping,”
    in <i>Proceedings of ASME TURBO Expo, Power for Land, Sea, and Air</i>, 2002,
    no. GT-2002-30429.
  mla: Panning, Lars, et al. “Optimization of the Contact Geometry between Turbine
    Blades and Underplatform Dampers with Respect to Friction Damping.” <i>Proceedings
    of ASME TURBO Expo, Power for Land, Sea, and Air</i>, no. GT-2002-30429, 2002.
  short: 'L. Panning, W. Sextro, K. Popp, in: Proceedings of ASME TURBO Expo, Power
    for Land, Sea, and Air, Amsterdam, Niederlande, 2002.'
date_created: 2019-04-15T10:22:26Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
issue: GT- 2002-30429
language:
- iso: eng
place: Amsterdam, Niederlande
publication: Proceedings of ASME TURBO Expo, Power for Land, Sea, and Air
status: public
title: Optimization of the Contact Geometry between Turbine Blades and Underplatform
  Dampers with respect to Friction Damping
type: conference
user_id: '55222'
year: '2002'
...
---
_id: '8929'
author:
- first_name: Lars
  full_name: Panning, Lars
  last_name: Panning
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
- first_name: Karl
  full_name: Popp, Karl
  last_name: Popp
citation:
  ama: 'Panning L, Sextro W, Popp K. Spatial dynamics of tuned and mistuned bladed
    disks with cylindrical and wedge-shaped friction dampers. In: <i>Proceedings of
    the 9th International Symposium on Transport Phenomena and Dynamics of Rotating
    Machinery, ISROMAC</i>. Honolulu, Hawaii, USA; 2002.'
  apa: Panning, L., Sextro, W., &#38; Popp, K. (2002). Spatial dynamics of tuned and
    mistuned bladed disks with cylindrical and wedge-shaped friction dampers. In <i>Proceedings
    of the 9th International Symposium on Transport Phenomena and Dynamics of Rotating
    Machinery, ISROMAC</i>. Honolulu, Hawaii, USA.
  bibtex: '@inproceedings{Panning_Sextro_Popp_2002, place={Honolulu, Hawaii, USA},
    title={Spatial dynamics of tuned and mistuned bladed disks with cylindrical and
    wedge-shaped friction dampers}, booktitle={Proceedings of the 9th International
    Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC},
    author={Panning, Lars and Sextro, Walter and Popp, Karl}, year={2002} }'
  chicago: Panning, Lars, Walter Sextro, and Karl Popp. “Spatial Dynamics of Tuned
    and Mistuned Bladed Disks with Cylindrical and Wedge-Shaped Friction Dampers.”
    In <i>Proceedings of the 9th International Symposium on Transport Phenomena and
    Dynamics of Rotating Machinery, ISROMAC</i>. Honolulu, Hawaii, USA, 2002.
  ieee: L. Panning, W. Sextro, and K. Popp, “Spatial dynamics of tuned and mistuned
    bladed disks with cylindrical and wedge-shaped friction dampers,” in <i>Proceedings
    of the 9th International Symposium on Transport Phenomena and Dynamics of Rotating
    Machinery, ISROMAC</i>, 2002.
  mla: Panning, Lars, et al. “Spatial Dynamics of Tuned and Mistuned Bladed Disks
    with Cylindrical and Wedge-Shaped Friction Dampers.” <i>Proceedings of the 9th
    International Symposium on Transport Phenomena and Dynamics of Rotating Machinery,
    ISROMAC</i>, 2002.
  short: 'L. Panning, W. Sextro, K. Popp, in: Proceedings of the 9th International
    Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC,
    Honolulu, Hawaii, USA, 2002.'
date_created: 2019-04-15T10:24:18Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
language:
- iso: eng
place: Honolulu, Hawaii, USA
publication: Proceedings of the 9th International Symposium on Transport Phenomena
  and Dynamics of Rotating Machinery, ISROMAC
status: public
title: Spatial dynamics of tuned and mistuned bladed disks with cylindrical and wedge-shaped
  friction dampers
type: conference
user_id: '55222'
year: '2002'
...
---
_id: '8931'
author:
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
- first_name: Lars
  full_name: Panning, Lars
  last_name: Panning
- first_name: Florian
  full_name: Götting, Florian
  last_name: Götting
citation:
  ama: 'Sextro W, Panning L, Götting F. Fast Calculation of the Statistics of the
    Forced Response of Mistuned Bladed Disk Assemblies with Friction Contacts. In:
    <i>Proceedings of ASME TURBO Expo, Power for Land, Sea, and Air</i>. Amsterdam,
    Niederlande; 2002.'
  apa: Sextro, W., Panning, L., &#38; Götting, F. (2002). Fast Calculation of the
    Statistics of the Forced Response of Mistuned Bladed Disk Assemblies with Friction
    Contacts. In <i>Proceedings of ASME TURBO Expo, Power for Land, Sea, and Air</i>.
    Amsterdam, Niederlande.
  bibtex: '@inproceedings{Sextro_Panning_Götting_2002, place={Amsterdam, Niederlande},
    title={Fast Calculation of the Statistics of the Forced Response of Mistuned Bladed
    Disk Assemblies with Friction Contacts}, number={GT-2002-30427}, booktitle={Proceedings
    of ASME TURBO Expo, Power for Land, Sea, and Air}, author={Sextro, Walter and
    Panning, Lars and Götting, Florian}, year={2002} }'
  chicago: Sextro, Walter, Lars Panning, and Florian Götting. “Fast Calculation of
    the Statistics of the Forced Response of Mistuned Bladed Disk Assemblies with
    Friction Contacts.” In <i>Proceedings of ASME TURBO Expo, Power for Land, Sea,
    and Air</i>. Amsterdam, Niederlande, 2002.
  ieee: W. Sextro, L. Panning, and F. Götting, “Fast Calculation of the Statistics
    of the Forced Response of Mistuned Bladed Disk Assemblies with Friction Contacts,”
    in <i>Proceedings of ASME TURBO Expo, Power for Land, Sea, and Air</i>, 2002,
    no. GT-2002-30427.
  mla: Sextro, Walter, et al. “Fast Calculation of the Statistics of the Forced Response
    of Mistuned Bladed Disk Assemblies with Friction Contacts.” <i>Proceedings of
    ASME TURBO Expo, Power for Land, Sea, and Air</i>, no. GT-2002-30427, 2002.
  short: 'W. Sextro, L. Panning, F. Götting, in: Proceedings of ASME TURBO Expo, Power
    for Land, Sea, and Air, Amsterdam, Niederlande, 2002.'
date_created: 2019-04-15T10:26:15Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
issue: GT- 2002-30427
language:
- iso: eng
place: Amsterdam, Niederlande
publication: Proceedings of ASME TURBO Expo, Power for Land, Sea, and Air
status: public
title: Fast Calculation of the Statistics of the Forced Response of Mistuned Bladed
  Disk Assemblies with Friction Contacts
type: conference
user_id: '55222'
year: '2002'
...
---
_id: '8932'
author:
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
- first_name: Karl
  full_name: Popp, Karl
  last_name: Popp
citation:
  ama: 'Sextro W, Popp K. Optimierung des Schwingungsverhaltens elastischer Strukturen
    mit Reibfugen. In: <i>Forschungsvereinigung Verbrennungskraftmaschinen (FW) -
    Lnformationstagung Turbinen</i>. Frankfurt am Main, Germany; 2002:157-183.'
  apa: Sextro, W., &#38; Popp, K. (2002). Optimierung des Schwingungsverhaltens elastischer
    Strukturen mit Reibfugen. In <i>Forschungsvereinigung Verbrennungskraftmaschinen
    (FW) - lnformationstagung Turbinen</i> (pp. 157–183). Frankfurt am Main, Germany.
  bibtex: '@inproceedings{Sextro_Popp_2002, place={Frankfurt am Main, Germany}, title={Optimierung
    des Schwingungsverhaltens elastischer Strukturen mit Reibfugen}, number={518},
    booktitle={Forschungsvereinigung Verbrennungskraftmaschinen (FW) - lnformationstagung
    Turbinen}, author={Sextro, Walter and Popp, Karl}, year={2002}, pages={157–183}
    }'
  chicago: Sextro, Walter, and Karl Popp. “Optimierung Des Schwingungsverhaltens Elastischer
    Strukturen Mit Reibfugen.” In <i>Forschungsvereinigung Verbrennungskraftmaschinen
    (FW) - Lnformationstagung Turbinen</i>, 157–83. Frankfurt am Main, Germany, 2002.
  ieee: W. Sextro and K. Popp, “Optimierung des Schwingungsverhaltens elastischer
    Strukturen mit Reibfugen,” in <i>Forschungsvereinigung Verbrennungskraftmaschinen
    (FW) - lnformationstagung Turbinen</i>, 2002, no. 518, pp. 157–183.
  mla: Sextro, Walter, and Karl Popp. “Optimierung Des Schwingungsverhaltens Elastischer
    Strukturen Mit Reibfugen.” <i>Forschungsvereinigung Verbrennungskraftmaschinen
    (FW) - Lnformationstagung Turbinen</i>, no. 518, 2002, pp. 157–83.
  short: 'W. Sextro, K. Popp, in: Forschungsvereinigung Verbrennungskraftmaschinen
    (FW) - Lnformationstagung Turbinen, Frankfurt am Main, Germany, 2002, pp. 157–183.'
date_created: 2019-04-15T10:28:24Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
issue: '518'
language:
- iso: eng
page: 157-183
place: Frankfurt am Main, Germany
publication: Forschungsvereinigung Verbrennungskraftmaschinen (FW) - lnformationstagung
  Turbinen
status: public
title: Optimierung des Schwingungsverhaltens elastischer Strukturen mit Reibfugen
type: conference
user_id: '55222'
year: '2002'
...
---
_id: '8921'
author:
- first_name: Lars
  full_name: Panning, Lars
  last_name: Panning
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
- first_name: Karl
  full_name: Popp, Karl
  last_name: Popp
citation:
  ama: 'Panning L, Sextro W, Popp K. Schwingungsanalyse verstimmter Schaufelkränze
    mit Reibelementen. In: Irretier H, Nordmann R, Springer H, eds. <i>Schwingungen
    in Rotierenden Maschinen VI SIRM, Referate Der Tagung in Wien</i>. Vieweg-Verlag;
    2001:297-306.'
  apa: Panning, L., Sextro, W., &#38; Popp, K. (2001). Schwingungsanalyse verstimmter
    Schaufelkränze mit Reibelementen. In H. Irretier, R. Nordmann, &#38; H. Springer
    (Eds.), <i>Schwingungen in rotierenden Maschinen VI SIRM, Referate der Tagung
    in Wien</i> (pp. 297–306). Vieweg-Verlag.
  bibtex: '@inproceedings{Panning_Sextro_Popp_2001, title={Schwingungsanalyse verstimmter
    Schaufelkränze mit Reibelementen}, booktitle={Schwingungen in rotierenden Maschinen
    VI SIRM, Referate der Tagung in Wien}, publisher={Vieweg-Verlag}, author={Panning,
    Lars and Sextro, Walter and Popp, Karl}, editor={Irretier, H and Nordmann, R and
    Springer, HEditors}, year={2001}, pages={297–306} }'
  chicago: Panning, Lars, Walter Sextro, and Karl Popp. “Schwingungsanalyse Verstimmter
    Schaufelkränze Mit Reibelementen.” In <i>Schwingungen in Rotierenden Maschinen
    VI SIRM, Referate Der Tagung in Wien</i>, edited by H Irretier, R Nordmann, and
    H Springer, 297–306. Vieweg-Verlag, 2001.
  ieee: L. Panning, W. Sextro, and K. Popp, “Schwingungsanalyse verstimmter Schaufelkränze
    mit Reibelementen,” in <i>Schwingungen in rotierenden Maschinen VI SIRM, Referate
    der Tagung in Wien</i>, 2001, pp. 297–306.
  mla: Panning, Lars, et al. “Schwingungsanalyse Verstimmter Schaufelkränze Mit Reibelementen.”
    <i>Schwingungen in Rotierenden Maschinen VI SIRM, Referate Der Tagung in Wien</i>,
    edited by H Irretier et al., Vieweg-Verlag, 2001, pp. 297–306.
  short: 'L. Panning, W. Sextro, K. Popp, in: H. Irretier, R. Nordmann, H. Springer
    (Eds.), Schwingungen in Rotierenden Maschinen VI SIRM, Referate Der Tagung in
    Wien, Vieweg-Verlag, 2001, pp. 297–306.'
date_created: 2019-04-15T10:07:56Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
editor:
- first_name: H
  full_name: Irretier, H
  last_name: Irretier
- first_name: R
  full_name: Nordmann, R
  last_name: Nordmann
- first_name: H
  full_name: Springer, H
  last_name: Springer
language:
- iso: eng
page: 297-306
publication: Schwingungen in rotierenden Maschinen VI SIRM, Referate der Tagung in
  Wien
publisher: Vieweg-Verlag
status: public
title: Schwingungsanalyse verstimmter Schaufelkränze mit Reibelementen
type: conference
user_id: '55222'
year: '2001'
...
---
_id: '8922'
author:
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
citation:
  ama: Sextro W. Heat and Wear Generation for Rolling Contacts. <i>Zeitschrift für
    angewandte Mathematik und Mechanik (ZAMM)</i>. 2001;81:225-226.
  apa: Sextro, W. (2001). Heat and Wear Generation for Rolling Contacts. <i>Zeitschrift
    Für Angewandte Mathematik Und Mechanik (ZAMM)</i>, <i>81</i>, 225–226.
  bibtex: '@article{Sextro_2001, title={Heat and Wear Generation for Rolling Contacts},
    volume={81}, journal={Zeitschrift für angewandte Mathematik und Mechanik (ZAMM)},
    author={Sextro, Walter}, year={2001}, pages={225–226} }'
  chicago: 'Sextro, Walter. “Heat and Wear Generation for Rolling Contacts.” <i>Zeitschrift
    Für Angewandte Mathematik Und Mechanik (ZAMM)</i> 81 (2001): 225–26.'
  ieee: W. Sextro, “Heat and Wear Generation for Rolling Contacts,” <i>Zeitschrift
    für angewandte Mathematik und Mechanik (ZAMM)</i>, vol. 81, pp. 225–226, 2001.
  mla: Sextro, Walter. “Heat and Wear Generation for Rolling Contacts.” <i>Zeitschrift
    Für Angewandte Mathematik Und Mechanik (ZAMM)</i>, vol. 81, 2001, pp. 225–26.
  short: W. Sextro, Zeitschrift Für Angewandte Mathematik Und Mechanik (ZAMM) 81 (2001)
    225–226.
date_created: 2019-04-15T10:11:58Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
intvolume: '        81'
language:
- iso: eng
page: 225-226
publication: Zeitschrift für angewandte Mathematik und Mechanik (ZAMM)
status: public
title: Heat and Wear Generation for Rolling Contacts
type: journal_article
user_id: '55222'
volume: 81
year: '2001'
...
---
_id: '8923'
author:
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
citation:
  ama: 'Sextro W. Development and Experimental Validation of a Point Contact Model
    for Dynamical Problems with Friction. In: <i>ASME Design Engineering Technical
    Conferences</i>. Pittsburgh, Pennsylvania, USA; 2001:1-12.'
  apa: Sextro, W. (2001). Development and Experimental Validation of a Point Contact
    Model for Dynamical Problems with Friction. In <i>ASME Design Engineering Technical
    Conferences</i> (pp. 1–12). Pittsburgh, Pennsylvania, USA.
  bibtex: '@inproceedings{Sextro_2001, place={Pittsburgh, Pennsylvania, USA}, title={Development
    and Experimental Validation of a Point Contact Model for Dynamical Problems with
    Friction}, number={DETC2001/VIB-21512}, booktitle={ASME Design Engineering Technical
    Conferences}, author={Sextro, Walter}, year={2001}, pages={1–12} }'
  chicago: Sextro, Walter. “Development and Experimental Validation of a Point Contact
    Model for Dynamical Problems with Friction.” In <i>ASME Design Engineering Technical
    Conferences</i>, 1–12. Pittsburgh, Pennsylvania, USA, 2001.
  ieee: W. Sextro, “Development and Experimental Validation of a Point Contact Model
    for Dynamical Problems with Friction,” in <i>ASME Design Engineering Technical
    Conferences</i>, 2001, no. DETC2001/VIB-21512, pp. 1–12.
  mla: Sextro, Walter. “Development and Experimental Validation of a Point Contact
    Model for Dynamical Problems with Friction.” <i>ASME Design Engineering Technical
    Conferences</i>, no. DETC2001/VIB-21512, 2001, pp. 1–12.
  short: 'W. Sextro, in: ASME Design Engineering Technical Conferences, Pittsburgh,
    Pennsylvania, USA, 2001, pp. 1–12.'
date_created: 2019-04-15T10:13:06Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
issue: DETC2001/VIB-21512
language:
- iso: eng
page: 1-12
place: Pittsburgh, Pennsylvania, USA
publication: ASME Design Engineering Technical Conferences
status: public
title: Development and Experimental Validation of a Point Contact Model for Dynamical
  Problems with Friction
type: conference
user_id: '55222'
year: '2001'
...
---
_id: '8924'
abstract:
- lang: eng
  text: In forced systems with cyclic symmetry localization can occur due toparameter
    uncertainties. Often, Monte-Carlo simulations are used to findregions, where the
    system response is sensitive to parameteruncertainties. These simulations require
    a large computation time.Therefore, an approximate method to calculate the envelopes
    of thefrequency response functions is developed in this paper. An example of anonlinear
    system with cyclic symmetry is a bladed disk assembly withfriction dampers. Friction
    dampers can be installed underneath the bladeplatforms of turbine blades. Due
    to dry friction and the relative motionbetween blades and dampers, energy is dissipated,
    which results in areduction of blade vibration amplitudes. By optimizing the mass
    of thefriction dampers, the best damping effects are obtained, which lead toan
    increase in the reliability of the turbine. In this paper, thecalculated response
    of a mistuned bladed disk assembly with frictiondampers is discussed. An approximate
    method is developed to calculatethe envelopes of the corresponding frequency response
    function forstatistically varying eigenfrequencies of the blades. Regions wherelocalization
    can occur with a high probability, are calculated by thismethod.
author:
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
- first_name: Karl
  full_name: Popp, Karl
  last_name: Popp
- first_name: Tomasz
  full_name: Krzyzynski, Tomasz
  last_name: Krzyzynski
citation:
  ama: Sextro W, Popp K, Krzyzynski T. Localization in Nonlinear Mistuned Systems
    with Cyclic Symmetry. <i>Nonlinear Dynamics</i>. 2001;25(1-3):207-220. doi:<a
    href="https://doi.org/10.1023/A:1012915002568">10.1023/A:1012915002568</a>
  apa: Sextro, W., Popp, K., &#38; Krzyzynski, T. (2001). Localization in Nonlinear
    Mistuned Systems with Cyclic Symmetry. <i>Nonlinear Dynamics</i>, <i>25</i>(1–3),
    207–220. <a href="https://doi.org/10.1023/A:1012915002568">https://doi.org/10.1023/A:1012915002568</a>
  bibtex: '@article{Sextro_Popp_Krzyzynski_2001, title={Localization in Nonlinear
    Mistuned Systems with Cyclic Symmetry}, volume={25}, DOI={<a href="https://doi.org/10.1023/A:1012915002568">10.1023/A:1012915002568</a>},
    number={1–3}, journal={Nonlinear Dynamics}, publisher={Kluwer Academic Publishers},
    author={Sextro, Walter and Popp, Karl and Krzyzynski, Tomasz}, year={2001}, pages={207–220}
    }'
  chicago: 'Sextro, Walter, Karl Popp, and Tomasz Krzyzynski. “Localization in Nonlinear
    Mistuned Systems with Cyclic Symmetry.” <i>Nonlinear Dynamics</i> 25, no. 1–3
    (2001): 207–20. <a href="https://doi.org/10.1023/A:1012915002568">https://doi.org/10.1023/A:1012915002568</a>.'
  ieee: W. Sextro, K. Popp, and T. Krzyzynski, “Localization in Nonlinear Mistuned
    Systems with Cyclic Symmetry,” <i>Nonlinear Dynamics</i>, vol. 25, no. 1–3, pp.
    207–220, 2001.
  mla: Sextro, Walter, et al. “Localization in Nonlinear Mistuned Systems with Cyclic
    Symmetry.” <i>Nonlinear Dynamics</i>, vol. 25, no. 1–3, Kluwer Academic Publishers,
    2001, pp. 207–20, doi:<a href="https://doi.org/10.1023/A:1012915002568">10.1023/A:1012915002568</a>.
  short: W. Sextro, K. Popp, T. Krzyzynski, Nonlinear Dynamics 25 (2001) 207–220.
date_created: 2019-04-15T10:14:18Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
doi: 10.1023/A:1012915002568
intvolume: '        25'
issue: 1-3
keyword:
- bladed disk assembly
- mistuning
- sensitivity
- localization
language:
- iso: eng
page: 207-220
publication: Nonlinear Dynamics
publication_identifier:
  issn:
  - 0924-090X
publisher: Kluwer Academic Publishers
status: public
title: Localization in Nonlinear Mistuned Systems with Cyclic Symmetry
type: journal_article
user_id: '55222'
volume: 25
year: '2001'
...
---
_id: '8925'
author:
- first_name: Jörg
  full_name: Wallaschek, Jörg
  last_name: Wallaschek
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
citation:
  ama: 'Wallaschek J, Hemsel T. Piezoelektrische lineare Schwingungsantriebe. In:
    <i>Special Antriebstechnik</i>. VDI-Z/Konstruktion. ; 2001:70-71.'
  apa: Wallaschek, J., &#38; Hemsel, T. (2001). Piezoelektrische lineare Schwingungsantriebe.
    In <i>Special Antriebstechnik</i> (pp. 70–71).
  bibtex: '@inproceedings{Wallaschek_Hemsel_2001, series={VDI-Z/Konstruktion}, title={Piezoelektrische
    lineare Schwingungsantriebe}, booktitle={Special Antriebstechnik}, author={Wallaschek,
    Jörg and Hemsel, Tobias}, year={2001}, pages={70–71}, collection={VDI-Z/Konstruktion}
    }'
  chicago: Wallaschek, Jörg, and Tobias Hemsel. “Piezoelektrische Lineare Schwingungsantriebe.”
    In <i>Special Antriebstechnik</i>, 70–71. VDI-Z/Konstruktion, 2001.
  ieee: J. Wallaschek and T. Hemsel, “Piezoelektrische lineare Schwingungsantriebe,”
    in <i>Special Antriebstechnik</i>, 2001, pp. 70–71.
  mla: Wallaschek, Jörg, and Tobias Hemsel. “Piezoelektrische Lineare Schwingungsantriebe.”
    <i>Special Antriebstechnik</i>, 2001, pp. 70–71.
  short: 'J. Wallaschek, T. Hemsel, in: Special Antriebstechnik, 2001, pp. 70–71.'
date_created: 2019-04-15T10:15:58Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
language:
- iso: eng
page: 70-71
popular_science: '1'
publication: Special Antriebstechnik
series_title: VDI-Z/Konstruktion
status: public
title: Piezoelektrische lineare Schwingungsantriebe
type: conference
user_id: '55222'
year: '2001'
...
---
_id: '8469'
author:
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
citation:
  ama: Hemsel T. <i>Untersuchung und Weiterentwicklung linearer piezoelektrischer
    Schwingungsantriebe</i>. Vol 101. Verlagsschriftenreihe des Heinz Nixdorf Instituts;
    2001.
  apa: Hemsel, T. (2001). <i>Untersuchung und Weiterentwicklung linearer piezoelektrischer
    Schwingungsantriebe</i> (Vol. 101). Verlagsschriftenreihe des Heinz Nixdorf Instituts.
  bibtex: '@book{Hemsel_2001, place={Paderborn}, title={Untersuchung und Weiterentwicklung
    linearer piezoelektrischer Schwingungsantriebe}, volume={101}, publisher={Verlagsschriftenreihe
    des Heinz Nixdorf Instituts}, author={Hemsel, Tobias}, year={2001} }'
  chicago: 'Hemsel, Tobias. <i>Untersuchung und Weiterentwicklung linearer piezoelektrischer
    Schwingungsantriebe</i>. Vol. 101. Paderborn: Verlagsschriftenreihe des Heinz
    Nixdorf Instituts, 2001.'
  ieee: 'T. Hemsel, <i>Untersuchung und Weiterentwicklung linearer piezoelektrischer
    Schwingungsantriebe</i>, vol. 101. Paderborn: Verlagsschriftenreihe des Heinz
    Nixdorf Instituts, 2001.'
  mla: Hemsel, Tobias. <i>Untersuchung und Weiterentwicklung linearer piezoelektrischer
    Schwingungsantriebe</i>. Verlagsschriftenreihe des Heinz Nixdorf Instituts, 2001.
  short: T. Hemsel, Untersuchung und Weiterentwicklung linearer piezoelektrischer
    Schwingungsantriebe, Verlagsschriftenreihe des Heinz Nixdorf Instituts, Paderborn,
    2001.
date_created: 2019-03-07T13:02:23Z
date_updated: 2024-07-12T07:04:48Z
department:
- _id: '151'
- _id: '26'
intvolume: '       101'
language:
- iso: ger
place: Paderborn
publication_identifier:
  isbn:
  - ISBN 3-935433-10-7
publication_status: published
publisher: Verlagsschriftenreihe des Heinz Nixdorf Instituts
status: public
supervisor:
- first_name: Jörg
  full_name: Wallaschek, Jörg
  last_name: Wallaschek
title: Untersuchung und Weiterentwicklung linearer piezoelektrischer Schwingungsantriebe
type: dissertation
user_id: '1112'
volume: 101
year: '2001'
...
---
_id: '8914'
abstract:
- lang: eng
  text: 'Piezoelectric ultrasonic motors have been investigated for several years
    and have already found their first practical applications. Their key feature is
    that they are able to produce a high thrust force related to their volume. Beside
    rotary drives like the travelling wave motor, linear drives have also been developed,
    but only a few are presently commercially available. In the present paper, we
    first describe the state of the art of linear piezoelectric motors. The motors
    are characterized with respect to their no-load velocity, maximum thrust force,
    efficiency and other technical properties. In the second part, we present a new
    motor, which is judged to be capable of surpassing the characteristics of other
    piezoelectric motors because of its unique design which allows the piezoelectric
    drive elements to be pre-stressed in the direction of their polarization. The
    piezoelectric elements convert energy using the longitudinal d33 effect which
    allows an improved reliability, large vibration amplitudes and excellent piezoelectric
    coupling. Energy loss by vibration damping is minimized, and the efficiency can
    be improved significantly. Experimental results show that the motor characteristics
    can be optimized for a particular task by choosing the appropriate operating parameters
    such as exciting voltage, exciting frequency and normal force. '
author:
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: Jörg
  full_name: Wallaschek, Jörg
  last_name: Wallaschek
citation:
  ama: Hemsel T, Wallaschek J. Survey of the present state of the art of piezoelectric
    linear motors. <i>Ultrasonics</i>. 2000;38:37-40. doi:<a href="https://doi.org/10.1016/S0041-624X(99)00143-2">10.1016/S0041-624X(99)00143-2</a>
  apa: Hemsel, T., &#38; Wallaschek, J. (2000). Survey of the present state of the
    art of piezoelectric linear motors. <i>Ultrasonics</i>, <i>38</i>, 37–40. <a href="https://doi.org/10.1016/S0041-624X(99)00143-2">https://doi.org/10.1016/S0041-624X(99)00143-2</a>
  bibtex: '@article{Hemsel_Wallaschek_2000, title={Survey of the present state of
    the art of piezoelectric linear motors}, volume={38}, DOI={<a href="https://doi.org/10.1016/S0041-624X(99)00143-2">10.1016/S0041-624X(99)00143-2</a>},
    journal={Ultrasonics}, author={Hemsel, Tobias and Wallaschek, Jörg}, year={2000},
    pages={37–40} }'
  chicago: 'Hemsel, Tobias, and Jörg Wallaschek. “Survey of the Present State of the
    Art of Piezoelectric Linear Motors.” <i>Ultrasonics</i> 38 (2000): 37–40. <a href="https://doi.org/10.1016/S0041-624X(99)00143-2">https://doi.org/10.1016/S0041-624X(99)00143-2</a>.'
  ieee: T. Hemsel and J. Wallaschek, “Survey of the present state of the art of piezoelectric
    linear motors,” <i>Ultrasonics</i>, vol. 38, pp. 37–40, 2000.
  mla: Hemsel, Tobias, and Jörg Wallaschek. “Survey of the Present State of the Art
    of Piezoelectric Linear Motors.” <i>Ultrasonics</i>, vol. 38, 2000, pp. 37–40,
    doi:<a href="https://doi.org/10.1016/S0041-624X(99)00143-2">10.1016/S0041-624X(99)00143-2</a>.
  short: T. Hemsel, J. Wallaschek, Ultrasonics 38 (2000) 37–40.
date_created: 2019-04-15T09:42:32Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
doi: 10.1016/S0041-624X(99)00143-2
intvolume: '        38'
keyword:
- Linear motor
language:
- iso: eng
page: 37 - 40
publication: Ultrasonics
publication_identifier:
  issn:
  - 0041-624X
quality_controlled: '1'
status: public
title: Survey of the present state of the art of piezoelectric linear motors
type: journal_article
user_id: '55222'
volume: 38
year: '2000'
...
---
_id: '8915'
abstract:
- lang: eng
  text: Ultrasonic linear motors have now been investigated for several years. Their
    key features are high thrust forces related to their volume and good position-accuracy.
    This contribution consists of two main parts. In the first part we describe the
    state-of-the-art of linear piezoelectric motors. Characteristics like no-load
    velocity, maximum thrust force and other technical properties of commercially
    available devices will be reported as well as those of prototypes. In the second
    part we report an ongoing research and development project aiming at a linear
    piezoelectric motor, which is capable of surpassing some of the shortcomings of
    other piezoelectric motors
author:
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: Jörg
  full_name: Wallaschek, Jörg
  last_name: Wallaschek
citation:
  ama: 'Hemsel T, Wallaschek J. State of the art and development trends of ultrasonic
    linear motors. In: <i>Ultrasonics Symposium, 2000 IEEE</i>. Vol 1. ; 2000:663-666
    vol.1. doi:<a href="https://doi.org/10.1109/ULTSYM.2000.922635">10.1109/ULTSYM.2000.922635</a>'
  apa: Hemsel, T., &#38; Wallaschek, J. (2000). State of the art and development trends
    of ultrasonic linear motors. In <i>Ultrasonics Symposium, 2000 IEEE</i> (Vol.
    1, pp. 663–666 vol.1). <a href="https://doi.org/10.1109/ULTSYM.2000.922635">https://doi.org/10.1109/ULTSYM.2000.922635</a>
  bibtex: '@inproceedings{Hemsel_Wallaschek_2000, title={State of the art and development
    trends of ultrasonic linear motors}, volume={1}, DOI={<a href="https://doi.org/10.1109/ULTSYM.2000.922635">10.1109/ULTSYM.2000.922635</a>},
    booktitle={Ultrasonics Symposium, 2000 IEEE}, author={Hemsel, Tobias and Wallaschek,
    Jörg}, year={2000}, pages={663–666 vol.1} }'
  chicago: Hemsel, Tobias, and Jörg Wallaschek. “State of the Art and Development
    Trends of Ultrasonic Linear Motors.” In <i>Ultrasonics Symposium, 2000 IEEE</i>,
    1:663–66 vol.1, 2000. <a href="https://doi.org/10.1109/ULTSYM.2000.922635">https://doi.org/10.1109/ULTSYM.2000.922635</a>.
  ieee: T. Hemsel and J. Wallaschek, “State of the art and development trends of ultrasonic
    linear motors,” in <i>Ultrasonics Symposium, 2000 IEEE</i>, 2000, vol. 1, pp.
    663–666 vol.1.
  mla: Hemsel, Tobias, and Jörg Wallaschek. “State of the Art and Development Trends
    of Ultrasonic Linear Motors.” <i>Ultrasonics Symposium, 2000 IEEE</i>, vol. 1,
    2000, pp. 663–66 vol.1, doi:<a href="https://doi.org/10.1109/ULTSYM.2000.922635">10.1109/ULTSYM.2000.922635</a>.
  short: 'T. Hemsel, J. Wallaschek, in: Ultrasonics Symposium, 2000 IEEE, 2000, pp.
    663–666 vol.1.'
date_created: 2019-04-15T09:52:09Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
doi: 10.1109/ULTSYM.2000.922635
intvolume: '         1'
keyword:
- linear motors
- ultrasonic motors
- linear piezoelectric motor
- maximum thrust force
- no-load velocity
- ultrasonic linear motor
- Electromagnetic devices
- Electromagnetic fields
- Frequency
- Friction
- Gears
- Materials science and technology
- Piezoelectric materials
- Research and development
- Vibrations
- Wheels
language:
- iso: eng
page: 663-666 vol.1
publication: Ultrasonics Symposium, 2000 IEEE
publication_identifier:
  issn:
  - 1051-0117
quality_controlled: '1'
status: public
title: State of the art and development trends of ultrasonic linear motors
type: conference
user_id: '55222'
volume: 1
year: '2000'
...
---
_id: '8916'
author:
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: Jörg
  full_name: Wallaschek, Jörg
  last_name: Wallaschek
citation:
  ama: 'Hemsel T, Wallaschek J. Piezoelectic linear motors. In: <i>Tagungsband Der
    ACTUATOR</i>. Bremen; 2000:250-253.'
  apa: Hemsel, T., &#38; Wallaschek, J. (2000). Piezoelectic linear motors. In <i>Tagungsband
    der ACTUATOR</i> (pp. 250–253). Bremen.
  bibtex: '@inproceedings{Hemsel_Wallaschek_2000, place={Bremen}, title={Piezoelectic
    linear motors}, booktitle={Tagungsband der ACTUATOR}, author={Hemsel, Tobias and
    Wallaschek, Jörg}, year={2000}, pages={250–253} }'
  chicago: Hemsel, Tobias, and Jörg Wallaschek. “Piezoelectic Linear Motors.” In <i>Tagungsband
    Der ACTUATOR</i>, 250–53. Bremen, 2000.
  ieee: T. Hemsel and J. Wallaschek, “Piezoelectic linear motors,” in <i>Tagungsband
    der ACTUATOR</i>, 2000, pp. 250–253.
  mla: Hemsel, Tobias, and Jörg Wallaschek. “Piezoelectic Linear Motors.” <i>Tagungsband
    Der ACTUATOR</i>, 2000, pp. 250–53.
  short: 'T. Hemsel, J. Wallaschek, in: Tagungsband Der ACTUATOR, Bremen, 2000, pp.
    250–253.'
date_created: 2019-04-15T09:53:30Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
language:
- iso: eng
page: 250-253
place: Bremen
publication: Tagungsband der ACTUATOR
status: public
title: Piezoelectic linear motors
type: conference
user_id: '55222'
year: '2000'
...
---
_id: '8917'
abstract:
- lang: eng
  text: Piezoelektrische Schwingungsantriebe sind Kleinmotoren, deren Funktionsprinzip
    darin besteht, dass elektrische Energie mit Hilfe von Piezokeramiken in mechanische
    Schwingungsenergie gewandelt und diese dann durch hochfrequente Kontaktvorgänge
    auf den anzutreibenden Teil übertragen wird. Der Stand der Technik auf dem Gebiet
    piezoelektrischer Linearantriebe zeigt, dass viele piezoelektrische Linearantriebe
    bereits zufriedenstellende Leistungsmerkmale aufweisen. Gleichzeitig ist zu erwarten,
    dass die Leistungen dieser Antriebe noch deutlich verbessert werden können. Ein
    Ansatz, insbesondere den Wirkungsgrad und die mechanische Leistung zu erhöhen,
    wird anhand eines Motors aufgezeigt, der am Heinz Nixdorf Institut entwickelt
    wurde. Eine Übersicht der in ausgewählten Einsatzgebieten geforderten Leistungsdaten
    führt auf Entwicklungsziele für bestehende und neuartige piezoelektrische Linearantriebe.
author:
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: Jörg
  full_name: Wallaschek, Jörg
  last_name: Wallaschek
citation:
  ama: Hemsel T, Wallaschek J. Stand der Technik und Entwicklungsperspektiven linearer
    piezoelektrischer Schwingungsantriebe. 2000;1533:147-166.
  apa: Hemsel, T., &#38; Wallaschek, J. (2000). Stand der Technik und Entwicklungsperspektiven
    linearer piezoelektrischer Schwingungsantriebe. D{\"u}sseldorf.
  bibtex: '@article{Hemsel_Wallaschek_2000, place={D{\"u}sseldorf}, series={VDI-Bericht},
    title={Stand der Technik und Entwicklungsperspektiven linearer piezoelektrischer
    Schwingungsantriebe}, volume={1533}, author={Hemsel, Tobias and Wallaschek, Jörg},
    year={2000}, pages={147–166}, collection={VDI-Bericht} }'
  chicago: Hemsel, Tobias, and Jörg Wallaschek. “Stand Der Technik Und Entwicklungsperspektiven
    Linearer Piezoelektrischer Schwingungsantriebe.” VDI-Bericht. D{\"u}sseldorf,
    2000.
  ieee: T. Hemsel and J. Wallaschek, “Stand der Technik und Entwicklungsperspektiven
    linearer piezoelektrischer Schwingungsantriebe,” vol. 1533. D{\"u}sseldorf, pp.
    147–166, 2000.
  mla: Hemsel, Tobias, and Jörg Wallaschek. <i>Stand Der Technik Und Entwicklungsperspektiven
    Linearer Piezoelektrischer Schwingungsantriebe</i>. Vol. 1533, 2000, pp. 147–66.
  short: T. Hemsel, J. Wallaschek, 1533 (2000) 147–166.
date_created: 2019-04-15T09:54:52Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
intvolume: '      1533'
language:
- iso: eng
page: 147-166
place: D{\"u}sseldorf
series_title: VDI-Bericht
status: public
title: Stand der Technik und Entwicklungsperspektiven linearer piezoelektrischer Schwingungsantriebe
type: conference
user_id: '55222'
volume: 1533
year: '2000'
...
---
_id: '8918'
abstract:
- lang: eng
  text: The paper deals with cyclic periodic structures modelling bladed disk assemblies
    of blades with friction elements for vibration damping. These elements placed
    between adjacent blades reduce the vibration amplitudes by means of dry friction
    resulting from centrifugal forces acting on the elements and relative displacements
    of the blades. However, the application of these friction elements results in
    an additional dynamical coupling which together with mistuning of some system
    parameters (e.g., blade eigenfrequency or contact parameters) may cause localization
    of vibration. In the present paper a linear approximation of such a system is
    investigated. The structure composed of cyclic periodic cells modelled each as
    a clamped-free beam interacting with each other by means of viscoelastic elements
    of complex stiffness is applied for dynamic system analysis. In case of free vibrations
    as well as in case of steady-state dynamic response to a harmonic pressure field,
    a perfect periodic structure and the structures with periodically mistuned parameters
    (blade eigenfrequencies and contact parameters) are studied. Some regularities
    in the dynamic response of the systems with mistuning have been noticed. Despite
    the fact that only a linear approximation has been used, the results and conclusions
    can be applied for models which describe the blade interaction in a nonlinear
    way.
author:
- first_name: Tomasz
  full_name: Krzyzynski, Tomasz
  last_name: Krzyzynski
- first_name: Karl
  full_name: Popp, Karl
  last_name: Popp
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
citation:
  ama: Krzyzynski T, Popp K, Sextro W. On some regularities in dynamic response of
    cyclic periodic structures. <i>Chaos, Solitons \&#38; Fractals</i>. 2000;11(10):1597-1609.
    doi:<a href="https://doi.org/10.1016/S0960-0779(99)00080-6">10.1016/S0960-0779(99)00080-6</a>
  apa: Krzyzynski, T., Popp, K., &#38; Sextro, W. (2000). On some regularities in
    dynamic response of cyclic periodic structures. <i>Chaos, Solitons \&#38; Fractals</i>,
    <i>11</i>(10), 1597–1609. <a href="https://doi.org/10.1016/S0960-0779(99)00080-6">https://doi.org/10.1016/S0960-0779(99)00080-6</a>
  bibtex: '@article{Krzyzynski_Popp_Sextro_2000, title={On some regularities in dynamic
    response of cyclic periodic structures}, volume={11}, DOI={<a href="https://doi.org/10.1016/S0960-0779(99)00080-6">10.1016/S0960-0779(99)00080-6</a>},
    number={10}, journal={Chaos, Solitons \&#38; Fractals}, author={Krzyzynski, Tomasz
    and Popp, Karl and Sextro, Walter}, year={2000}, pages={1597–1609} }'
  chicago: 'Krzyzynski, Tomasz, Karl Popp, and Walter Sextro. “On Some Regularities
    in Dynamic Response of Cyclic Periodic Structures.” <i>Chaos, Solitons \&#38;
    Fractals</i> 11, no. 10 (2000): 1597–1609. <a href="https://doi.org/10.1016/S0960-0779(99)00080-6">https://doi.org/10.1016/S0960-0779(99)00080-6</a>.'
  ieee: T. Krzyzynski, K. Popp, and W. Sextro, “On some regularities in dynamic response
    of cyclic periodic structures,” <i>Chaos, Solitons \&#38; Fractals</i>, vol. 11,
    no. 10, pp. 1597–1609, 2000.
  mla: Krzyzynski, Tomasz, et al. “On Some Regularities in Dynamic Response of Cyclic
    Periodic Structures.” <i>Chaos, Solitons \&#38; Fractals</i>, vol. 11, no. 10,
    2000, pp. 1597–609, doi:<a href="https://doi.org/10.1016/S0960-0779(99)00080-6">10.1016/S0960-0779(99)00080-6</a>.
  short: T. Krzyzynski, K. Popp, W. Sextro, Chaos, Solitons \&#38; Fractals 11 (2000)
    1597–1609.
date_created: 2019-04-15T09:58:17Z
date_updated: 2022-01-06T07:04:05Z
department:
- _id: '151'
doi: 10.1016/S0960-0779(99)00080-6
intvolume: '        11'
issue: '10'
language:
- iso: eng
page: 1597 - 1609
publication: Chaos, Solitons \& Fractals
publication_identifier:
  issn:
  - 0960-0779
status: public
title: On some regularities in dynamic response of cyclic periodic structures
type: journal_article
user_id: '55222'
volume: 11
year: '2000'
...