---
_id: '9963'
abstract:
- lang: eng
text: Tire-wheel assembly is the only connection between road and vehicle. Contacting
directly with road within postcard size of contact area, it is mounted and guided
by the suspension system. Therefore kinematics and compliances of suspension system
greatly influence the frictional coupling of tire tread elements and road surface
asperities by affecting pressure and sliding velocity distribution in the contact
zone. This study emphasizes the development of a numerical methodology for frictional
rolling contact analysis with focus on interaction of suspension system dynamics
and tire-road contact using ADAMS. For this purpose a comprehensive flexible multibody
system of the multi-link rear suspension is established, where both flexible and
rigid bodies are modeled to allow large displacements with included elastic effects.
To meet accuracy requirements for the high frequency applications, such as road
excitations, the amplitude- and frequency-dependency of rubber-metal bushings
is included. Furthermore the proposed flexible viscoelastic suspension model is
enhanced by a Flexible Ring Tire Model (FTire), which describes a 3D tire dynamic
response and covers any road excitations by tread submodel connected to road surface
model. Concerning the verification and validation procedure numerous experiments
are carried out to confirm the validity and the accuracy of both the developed
submodels and the entire model. The devised approach makes it possible to investigate
the influence of suspension system design on dynamical rolling contact and to
evaluate tire tread wear. Therefore it can be a useful tool to predict frictional
power distribution within the contact area under more realistic conditions.
author:
- first_name: Sergej
full_name: Kohl, Sergej
last_name: Kohl
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
- first_name: Sebastian
full_name: Schulze, Sebastian
last_name: Schulze
citation:
ama: 'Kohl S, Sextro W, Schulze S. Aspects of Flexible Viscoelastic Suspension Modeling
for Frictional Rolling Contact Analysis using ADAMS. In: The 2nd International
Conference on Automotive Innovation and Green Energy Vehicle (AiGEV 2016), Cyberjaya,
Malaysia, 2016. Cyberjaya, Malaysia, 2016; 2016:1-12.'
apa: Kohl, S., Sextro, W., & Schulze, S. (2016). Aspects of Flexible Viscoelastic
Suspension Modeling for Frictional Rolling Contact Analysis using ADAMS. In The
2nd International Conference on Automotive Innovation and Green Energy Vehicle
(AiGEV 2016), Cyberjaya, Malaysia, 2016. (pp. 1–12). Cyberjaya, Malaysia,
2016.
bibtex: '@inproceedings{Kohl_Sextro_Schulze_2016, place={Cyberjaya, Malaysia, 2016},
title={Aspects of Flexible Viscoelastic Suspension Modeling for Frictional Rolling
Contact Analysis using ADAMS}, booktitle={The 2nd International Conference on
Automotive Innovation and Green Energy Vehicle (AiGEV 2016), Cyberjaya, Malaysia,
2016.}, author={Kohl, Sergej and Sextro, Walter and Schulze, Sebastian}, year={2016},
pages={1–12} }'
chicago: Kohl, Sergej, Walter Sextro, and Sebastian Schulze. “Aspects of Flexible
Viscoelastic Suspension Modeling for Frictional Rolling Contact Analysis Using
ADAMS.” In The 2nd International Conference on Automotive Innovation and Green
Energy Vehicle (AiGEV 2016), Cyberjaya, Malaysia, 2016., 1–12. Cyberjaya,
Malaysia, 2016, 2016.
ieee: S. Kohl, W. Sextro, and S. Schulze, “Aspects of Flexible Viscoelastic Suspension
Modeling for Frictional Rolling Contact Analysis using ADAMS,” in The 2nd International
Conference on Automotive Innovation and Green Energy Vehicle (AiGEV 2016), Cyberjaya,
Malaysia, 2016., 2016, pp. 1–12.
mla: Kohl, Sergej, et al. “Aspects of Flexible Viscoelastic Suspension Modeling
for Frictional Rolling Contact Analysis Using ADAMS.” The 2nd International
Conference on Automotive Innovation and Green Energy Vehicle (AiGEV 2016), Cyberjaya,
Malaysia, 2016., 2016, pp. 1–12.
short: 'S. Kohl, W. Sextro, S. Schulze, in: The 2nd International Conference on
Automotive Innovation and Green Energy Vehicle (AiGEV 2016), Cyberjaya, Malaysia,
2016., Cyberjaya, Malaysia, 2016, 2016, pp. 1–12.'
date_created: 2019-05-27T09:13:14Z
date_updated: 2019-05-27T09:13:54Z
department:
- _id: '151'
keyword:
- Kinematics and compliances
- flexible viscoelastic suspension model
- frictional rolling contact analysis
- frictional power distribution.
language:
- iso: eng
page: 1-12
place: Cyberjaya, Malaysia, 2016
publication: The 2nd International Conference on Automotive Innovation and Green Energy
Vehicle (AiGEV 2016), Cyberjaya, Malaysia, 2016.
status: public
title: Aspects of Flexible Viscoelastic Suspension Modeling for Frictional Rolling
Contact Analysis using ADAMS
type: conference
user_id: '55222'
year: '2016'
...
---
_id: '9887'
abstract:
- lang: eng
text: A model to calculate the locally resolved tangential contact forces of the
wheel rail contact with respect to contact kinematics, material and surface properties
as well as temperature is introduced. The elasticity of wheel and rail is modeled
as an elastic layer consisting of point contact elements connected by springs
to each other and to the wheel. Each element has two degrees of freedom in tangential
directions. The resulting total stiffness matrix is reduced to calculate only
the position of the elements in contact. Friction forces as well as contact stiffnesses
are incorporated by a nonlinear force-displacement characteristic, which originates
from a detailed contact model. The contact elements are transported through the
contact zone in discrete time steps. After each time step an equilibrium is calculated.
For all elements, their temperature and its influence on local friction are regarded
by calculating friction power and temperature each time step.
author:
- first_name: Jan
full_name: Neuhaus, Jan
last_name: Neuhaus
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: 'Neuhaus J, Sextro W. Thermo-Mechanical Model for Wheel Rail Contact using
Coupled Point Contact Elements. In: Liu GR, Guan ZW, eds. Proceedings of the
5th International Conference on Computational Methods. ScienTech Publisher;
2014.'
apa: Neuhaus, J., & Sextro, W. (2014). Thermo-Mechanical Model for Wheel Rail
Contact using Coupled Point Contact Elements. In G. R. Liu & Z. W. Guan (Eds.),
Proceedings of the 5th International Conference on Computational Methods.
ScienTech Publisher.
bibtex: '@inproceedings{Neuhaus_Sextro_2014, title={Thermo-Mechanical Model for
Wheel Rail Contact using Coupled Point Contact Elements}, booktitle={Proceedings
of the 5th International Conference on Computational Methods}, publisher={ScienTech
Publisher}, author={Neuhaus, Jan and Sextro, Walter}, editor={Liu, G.R. and Guan,
Z.W.Editors}, year={2014} }'
chicago: Neuhaus, Jan, and Walter Sextro. “Thermo-Mechanical Model for Wheel Rail
Contact Using Coupled Point Contact Elements.” In Proceedings of the 5th International
Conference on Computational Methods, edited by G.R. Liu and Z.W. Guan. ScienTech
Publisher, 2014.
ieee: J. Neuhaus and W. Sextro, “Thermo-Mechanical Model for Wheel Rail Contact
using Coupled Point Contact Elements,” in Proceedings of the 5th International
Conference on Computational Methods, 2014.
mla: Neuhaus, Jan, and Walter Sextro. “Thermo-Mechanical Model for Wheel Rail Contact
Using Coupled Point Contact Elements.” Proceedings of the 5th International
Conference on Computational Methods, edited by G.R. Liu and Z.W. Guan, ScienTech
Publisher, 2014.
short: 'J. Neuhaus, W. Sextro, in: G.R. Liu, Z.W. Guan (Eds.), Proceedings of the
5th International Conference on Computational Methods, ScienTech Publisher, 2014.'
date_created: 2019-05-20T13:23:02Z
date_updated: 2019-09-16T10:59:46Z
department:
- _id: '151'
editor:
- first_name: G.R.
full_name: Liu, G.R.
last_name: Liu
- first_name: Z.W.
full_name: Guan, Z.W.
last_name: Guan
keyword:
- Rolling Contact
- Discrete Elements
- Contact Stiffness
- Temperature
language:
- iso: eng
publication: Proceedings of the 5th International Conference on Computational Methods
publisher: ScienTech Publisher
quality_controlled: '1'
status: public
title: Thermo-Mechanical Model for Wheel Rail Contact using Coupled Point Contact
Elements
type: conference
user_id: '55222'
year: '2014'
...
---
_id: '9772'
abstract:
- lang: eng
text: 'A profound description of friction in wheel--rail contact plays an essential
role for optimization of traction control strategies, as input quantity for railway
simulations in general and for the estimation of wear and rolling contact fatigue.
A multitude of wheel--rail contact models exists, however, traction--creepage
curves obtained from measurements show quantitative and qualitative deviations.
There are several phenomena which influence the traction--creepage characteristics:
Mechanisms resulting from surface roughness, frictional heating or the presence
of interfacial fluids can have a dominating influence on friction. In this paper,
a new wheel--rail contact model, accounting for these influential parameters,
will be presented. The presented model accounts for the interaction of an interfacial
fluid model for combined boundary and mixed lubrication of rough surfaces with
a wheel--rail contact model that additionally accounts for frictional heating.
A quantitative comparison with measurements found in the literature is not conducted,
since the exact conditions of the measurements are mostly unknown and parameters
can easily be adjusted to fit the measurements. Emphasis is placed on the qualitative
behavior of the model with respect to the measurements and good agreement is found.
The dependence of the maximum traction coefficient on rolling velocity, surface
roughness and normal load is studied under dry and water lubricated conditions.'
author:
- first_name: Christoph
full_name: Tomberger, Christoph
last_name: Tomberger
- first_name: Peter
full_name: Dietmaier, Peter
last_name: Dietmaier
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
- first_name: Klaus
full_name: Six, Klaus
last_name: Six
citation:
ama: 'Tomberger C, Dietmaier P, Sextro W, Six K. Friction in wheel--rail contact:
A model comprising interfacial fluids, surface roughness and temperature. Wear.
2011;271:2-12. doi:10.1016/j.wear.2010.10.025'
apa: 'Tomberger, C., Dietmaier, P., Sextro, W., & Six, K. (2011). Friction in
wheel--rail contact: A model comprising interfacial fluids, surface roughness
and temperature. Wear, 271, 2–12. https://doi.org/10.1016/j.wear.2010.10.025'
bibtex: '@article{Tomberger_Dietmaier_Sextro_Six_2011, title={Friction in wheel--rail
contact: A model comprising interfacial fluids, surface roughness and temperature},
volume={271}, DOI={10.1016/j.wear.2010.10.025},
journal={Wear}, author={Tomberger, Christoph and Dietmaier, Peter and Sextro,
Walter and Six, Klaus}, year={2011}, pages={2–12} }'
chicago: 'Tomberger, Christoph, Peter Dietmaier, Walter Sextro, and Klaus Six. “Friction
in Wheel--Rail Contact: A Model Comprising Interfacial Fluids, Surface Roughness
and Temperature.” Wear 271 (2011): 2–12. https://doi.org/10.1016/j.wear.2010.10.025.'
ieee: 'C. Tomberger, P. Dietmaier, W. Sextro, and K. Six, “Friction in wheel--rail
contact: A model comprising interfacial fluids, surface roughness and temperature,”
Wear, vol. 271, pp. 2–12, 2011.'
mla: 'Tomberger, Christoph, et al. “Friction in Wheel--Rail Contact: A Model Comprising
Interfacial Fluids, Surface Roughness and Temperature.” Wear, vol. 271,
2011, pp. 2–12, doi:10.1016/j.wear.2010.10.025.'
short: C. Tomberger, P. Dietmaier, W. Sextro, K. Six, Wear 271 (2011) 2–12.
date_created: 2019-05-13T11:08:32Z
date_updated: 2022-01-06T07:04:19Z
department:
- _id: '151'
doi: 10.1016/j.wear.2010.10.025
intvolume: ' 271'
keyword:
- Wheel--rail contact
- Rolling contact
- Friction
- Interfacial fluid
- Lubrication
- Surface roughness
- Contact temperature
language:
- iso: eng
page: 2 - 12
publication: Wear
publication_identifier:
issn:
- 0043-1648
quality_controlled: '1'
status: public
title: 'Friction in wheel--rail contact: A model comprising interfacial fluids, surface
roughness and temperature'
type: journal_article
user_id: '55222'
volume: 271
year: '2011'
...