AULA - Collegezaal B Live Meeting
Jul 23, 2024 14:00 - 15:20(Europe/Amsterdam)
20240723T1400 20240723T1520 Europe/Amsterdam MS09.4: Nonlinear Dynamics in Engineering Systems AULA - Collegezaal B Enoc2024 n.fontein@tudelft.nl
17 attendees saved this session
Bifurcation analysis of a minimal model of a bowed string instrumentView Abstract
MS-09 - Nonlinear Dynamics in Engineering Systems 02:00 PM - 02:20 PM (Europe/Amsterdam) 2024/07/23 12:00:00 UTC - 2024/07/23 12:20:00 UTC
This study is concerned with a minimal model of a bowed string instrument, derived through a modal decomposition of the linear Kirchhoff-Carrier PDE with a Coulomb friction force that is subsequently regularized for the sake of numerical conditioning. A bifurcation analysis of the regularized model provides a cartography of the different sound regimes in the parameter space. These results are then compared with time-domain simulations of the unregularized Coulomb friction, to evaluate whether the regularized dynamics can converge to the unregularized dynamics.
Presenters
MW
Marc Wijnand
Postdoctoral Researcher, Le Mans Université
Co-Authors
ST
Soizic TERRIEN
CNRS
FA
Frédéric Ablitzer
SM
Sylvain Maugeais
Inverse dynamics in Reconfigurable Underactuated Cable-Driven Parallel RobotsView Abstract
MS-09 - Nonlinear Dynamics in Engineering Systems 02:20 PM - 02:40 PM (Europe/Amsterdam) 2024/07/23 12:20:00 UTC - 2024/07/23 12:40:00 UTC
This paper proposes the preliminary results on a new method for solving inverse dynamics in Reconfigurable Underactuated Cable-Driven Parallel Robots. Given a prescribed trajectory, imposed to a subset of the end-effector coordinates, the goal is to evaluate the motor torques that are required to properly adjust the cable lengths as well as to compute the commanded trajectories of the movable exit-points. The developed technique is based on the input-output normal form of the nonlinear dynamic model of the unconstrained end-effector and, as it is usual in non-flat underactuated systems, it exploits both algebraic and differential equations, leading to a numerical approach. Some mild simplifications are proposed to reduce the computational effort. Numerical validation is proposed.
Presenters Jason Bettega
Assistant Professor, University Of Padova
Co-Authors
GP
Giulio Piva
R&D Mechanical Engineer, L'Inglesina Baby S.p.A.
DR
Dario Richiedei
Full Professor, University Of Padova
AT
Alberto Trevisani
Full Professor, University Of Padova
A Multiple Shooting Method for Computing Periodic Responses of Highly Flexible Beams Modelled under the SE(3) Lie Group FrameworkView Abstract
MS-09 - Nonlinear Dynamics in Engineering Systems 02:40 PM - 03:00 PM (Europe/Amsterdam) 2024/07/23 12:40:00 UTC - 2024/07/23 13:00:00 UTC
Presenters
AB
Amir Kamyar Bagheri
PhD Student, Imperial College London
Co-Authors
VS
Valentin Sonneville
Technical University Of Munich
LR
Ludovic Renson
Senior Lecturer, Imperial College London
Dynamic stability of a rotor supported by textured journal bearings using homogenizationView Abstract
MS-09 - Nonlinear Dynamics in Engineering Systems 03:00 PM - 03:20 PM (Europe/Amsterdam) 2024/07/23 13:00:00 UTC - 2024/07/23 13:20:00 UTC
A computationally efficient method for nonlinear dynamic analysis of a rotor system with textured journal bearings is presented. The homogenization approach of the bearing undulation applied to the Reynolds equation is coupled with a numerical continuation tool to analyze the dynamic stability of a rotor-bearing coupled system.
Presenters
MB
Miroslav Byrtus
Associate Professor, University Of West Bohemia
Co-Authors
JR
Jan Rendl
University Of West Bohemia
associate professor
,
University Of West Bohemia
PhD Student
,
Imperial College London
Assistant Professor
,
University Of Padova
postdoctoral researcher
,
Le Mans Université
Professor
,
National Technical University
Prof. Francesco Pellicano
Full Professor
,
Università Di Modena E Reggio Emilia
Ms. Dóra Patkó
PhD student
,
Budapest University Of Technology And Economics
Dynamic stability of a rotor supported by textu...
1705330558enoc2024_byrtus.pdf View Download Presentation Submitted by Miroslav Byrtus 7
A Multiple Shooting Method for Computing Period...
1712930612enoc2024_abstract.pdf View Download Presentation Submitted by Amir Kamyar Bagheri 7
Inverse dynamics in Reconfigurable Underactuate...
1712064593Bettega_Piva_Richiedei_Trevisani_ext_abs_Rev1.pdf View Download Presentation Submitted by Jason Bettega 9
Bifurcation analysis of a minimal model of a bo...
1714160675enoc2024_wijnand_review_v2_final.pdf View Download Presentation Submitted by Marc Wijnand 33
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