@misc{48638, author = {{Kruse, Stephan}}, title = {{{Photonic Quantum Enhanced Radar Systems}}}, year = {{2023}}, } @inbook{48649, author = {{Gevers, Karina and Töws, P. and Schraa, L. and Decker, J. and Schöppner, Volker and Uhlig, K. and Stommel, M.}}, booktitle = {{11. Landshuter Leichtbau-Colloquium}}, isbn = {{978-3-9818439-7-2 }}, pages = {{8--17}}, publisher = {{Landshut: LC-Verlag}}, title = {{{Einfluss von Infrarotschweißprozessparametern auf die quasistatische und zyklische Belastbarkeit von technischen glasfaserverstärkten Thermoplasten}}}, year = {{2023}}, } @inproceedings{48651, author = {{Schöppner, Volker and Austermeier, Laura and Nordieker, A.}}, location = {{Denver, CO (USA)}}, title = {{{A NEW APPROACH FOR THE LOCAL DETERMINATION OF ENERGY INPUT IN CO-ROTATING TWIN SCREW EXTRUDERS BASED ON SCREW TORSION}}}, year = {{2023}}, } @inproceedings{48660, author = {{Schöppner, Volker and Austermeier, Laura and Alsoud, A.}}, location = {{St. Gallen (Schweiz)}}, title = {{{Development Of An Asymmetric Torque Model For The Two Screws Of A Twin Screw Extruder}}}, year = {{2023}}, } @article{48652, author = {{Schöppner, Volker and Gevers, Karina and Schraa, L. and Töws, P. and Uhlig, K. and Stommel, M. and Decker, J.}}, journal = {{Joining Plastics}}, title = {{{Auswirkungen unterschiedlicher Erwärmstrategien auf infraroterwärmte Polyphthalamide}}}, year = {{2023}}, } @inproceedings{48661, author = {{Schöppner, Volker and Petzke, J.}}, location = {{Gummersbach (Deutschland)}}, title = {{{Devulkanisation schwefelvernetzender Elastomere im halbleitergestützten Mikrowellenverfahren}}}, year = {{2023}}, } @article{48464, abstract = {{AbstractInitial value problems can be solved efficiently by means of Runge–Kutta algorithms with adaptive step size control. Diagonally implicit Runge–Kutta (DIRK) methods are the most popular class among the diverse family of Runge–Kutta algorithms. In this paper, the novel class of low‐order explicit last‐stage diagonally implicit Runge–Kutta (ELDIRK) methods are explored, which combine implicit schemes with an additional explicit evaluation as an explicit last stage. ELDIRK Butcher tableaus are used to control embedded RK methods to obtain solutions of different orders. The lower‐order solution is obtained by classical implicit RK stages and the higher‐order solution is obtained by additional explicit evaluation. As a result, a significant reduction in computational cost is achieved by skipping the iterative solution of nonlinear systems for the additional step. The examination of the heat problem and the use of the innovative Butcher tableau in the finite‐element method are the main contributions of this work. Thus, it is possible to establish adaptive step size control for the new low‐order embedded methods based on an empirical method for error estimation. Two‐dimensional simulations are used to show an appropriate algorithm for the ELDIRK schemes. The new Runge–Kutta schemes' predictions of higher‐order convergence are confirmed, and their successful outcomes are illustrated.}}, author = {{Westermann, Hendrik and Mahnken, Rolf}}, issn = {{1617-7061}}, journal = {{PAMM}}, keywords = {{Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics}}, number = {{2}}, publisher = {{Wiley}}, title = {{{Numerical investigations of new low‐order explicit last stage diagonal implicit Runge–Kutta schemes with the finite‐element method}}}, doi = {{10.1002/pamm.202300071}}, volume = {{23}}, year = {{2023}}, } @article{48465, author = {{Westermann, Hendrik and Mahnken, Rolf}}, issn = {{0045-7825}}, journal = {{Computer Methods in Applied Mechanics and Engineering}}, keywords = {{Computer Science Applications, General Physics and Astronomy, Mechanical Engineering, Mechanics of Materials, Computational Mechanics}}, publisher = {{Elsevier BV}}, title = {{{On the accuracy, stability and computational efficiency of explicit last-stage diagonally implicit Runge–Kutta methods (ELDIRK) for the adaptive solution of phase-field problems}}}, doi = {{10.1016/j.cma.2023.116545}}, volume = {{418}}, year = {{2023}}, } @article{48673, author = {{Lenz, Peter and Kreutzheide, Phil and Mahnken, Rolf}}, issn = {{0045-7949}}, journal = {{Computers & Structures}}, keywords = {{Computer Science Applications, Mechanical Engineering, General Materials Science, Modeling and Simulation, Civil and Structural Engineering}}, publisher = {{Elsevier BV}}, title = {{{Multiphase elasto-plastic mean-field homogenisation and its consistent linearisation}}}, doi = {{10.1016/j.compstruc.2023.107160}}, volume = {{290}}, year = {{2023}}, } @article{48682, abstract = {{The present study investigates participants' performance in two different mental body-rotation tasks (MBRTs) under conditions in which dynamic stability is challenged in two different balancing conditions: active balance control (Experiment 1), where participants actively maneuver, and re-active balance control (Experiment 2), where participants react to an external perturbation. The two MBRTs induced either an object-based spatial transformation (based on a same-different judgment) or an egocentric transformation (based on a left-right judgment). In Experiment 1, 48 participants were tested while standing on an even ground (low balancing requirements) or on a balance board (high balancing requirements). In Experiment 2, 32 participants performed while either standing still on a vibration plate or with the vibration plate moving in a low (20 Hz) or high (180 Hz) frequency. In both experiments, the results for response time and response error revealed effects of rotation angle and type of task. An effect of balancing condition was only observed for response error in Experiment 1. More precisely, response times and response errors increased for higher rotation angles. Also, performance was better for egocentric than for object-based spatial transformations. However, the different challenges to dynamic stability in Experiments 1 and 2 did not influence performance in the two MBRTs (except for response errors in Experiment 1) nor in a control condition (Experiment 1) without mental rotation.}}, author = {{Budde, Kirsten and Weigelt, Matthias}}, issn = {{0167-9457}}, journal = {{Human Movement Science}}, keywords = {{Mental rotation, Balance control, Perturbation, Embodiment}}, publisher = {{Elsevier BV}}, title = {{{No effects of different perturbations on the performance in a mental body-rotation task (MBRT) with egocentric perspective transformations and object-based transformations}}}, doi = {{10.1016/j.humov.2023.103156}}, volume = {{92}}, year = {{2023}}, } @misc{48696, author = {{Spener, Anna Maria and Heimgartner, Stephanie}}, booktitle = {{Sprache und Literatur}}, number = {{2}}, pages = {{312--320}}, title = {{{Rezension: Erika Thomalla: Anwälte des Autors. Zur Geschichte der Herausgeberschaft im 18. und 19. Jahrhundert, Göttingen: Wallstein 2020 und Ines Barner: Von anderer Hand. Praktiken des Schreibens zwischen Autor und Lektor, Göttingen: Wallstein 2021}}}, volume = {{51}}, year = {{2023}}, } @inproceedings{48739, author = {{Moritzer, Elmar and Elsner, Christian Lennart and Deupmann, K.}}, location = {{St. Gallen (Schweiz)}}, title = {{{Investigation of the Volume Flow in the FFF Process as an Influencing Factor on the Resulting Orientation of Thermally Conductive Filler Particles}}}, year = {{2023}}, } @inproceedings{48738, author = {{Schöppner, Volker and Trienens, Dorte}}, location = {{St. Gallen (Schweiz)}}, title = {{{Investigation of the influence of screw geometry on the resulting melt quality for cast film extrusion}}}, year = {{2023}}, } @article{48734, author = {{Moritzer, Elmar and Mühlhoff, Frederik Marvin and Rauen, Dennis and Kolbe, B. and Schlee, H. and Hokamp, C.}}, journal = {{Kunststoffe}}, title = {{{Großflächig, komplex? InMould-Plasma ist die Lösung!}}}, year = {{2023}}, } @article{48733, author = {{Moritzer, Elmar and Kartelmeyer, Stephan and Kreamer, Dennis and Jaroschek, Christoph}}, journal = {{Plastics Insights}}, number = {{7/2023}}, pages = {{38--41}}, title = {{{Goodbye Hot Spots - with No Extra Energy Expenditure}}}, year = {{2023}}, } @article{48735, author = {{Schöppner, Volker and Frank, Maximilian and Schall, Christoph Wilhelm Theodor}}, journal = {{Kunststoffe}}, number = {{9/2023}}, pages = {{76--78}}, title = {{{Hauptsache, die Wellenlänge stimmt}}}, year = {{2023}}, } @article{48736, author = {{Moritzer, Elmar and Kartelmeyer, Stephan and Kraemer, Dennis and Jaroschek, Christoph}}, journal = {{Kunststoffe}}, number = {{5/2023}}, pages = {{64--66}}, title = {{{Hotspots ade - ohne Extra-Energieaufwand}}}, year = {{2023}}, } @inproceedings{48747, author = {{Moritzer, Elmar and Held, Christian}}, location = {{Singapur (Singapur)}}, publisher = {{Springer Verlag}}, title = {{{Optimization of additively manufactured parts for direct screwing}}}, year = {{2023}}, } @article{48746, author = {{Schöppner, Volker and Kleinschmidt, Dennis and Hopmann, C. and Wiesel, C. and Nillius, U. and Schön, M. and Limper, A.}}, journal = {{KGK Kautschuk Gummi Kunststoffe}}, pages = {{47--52}}, title = {{{Optimisation of the Simulation of Rubber Extrusion dies by means of the Integration of empirically determined characteristic Maps}}}, year = {{2023}}, } @inproceedings{48745, author = {{Schöppner, Volker and Gevers, Karina and Albrecht, M. and Seefried, A.}}, location = {{Chemnitz (Deutschland)}}, title = {{{Mischmaterialschweißen von PC/ABS und PMMA beim Warmgasstumpfschweißen mit Runddüsen}}}, year = {{2023}}, }