Non Smooth Contact Dynamics Approach for Cohesive Multi-Contact Systems

2010 ◽  
Author(s):  
H. Haddad ◽  
M. Guessasma ◽  
J. Fortin
Keyword(s):  
Contact Dynamics ◽  
Smooth Contact

scholarly journals Non Smooth Contact Dynamics Approach for Mechanical Systems Subjected to Friction-Induced Vibration

Lubricants ◽  
2019 ◽  
Vol 7 (7) ◽  
pp. 59 ◽  
Author(s):  
Jean-Jacques Sinou ◽  
Olivier Chiello ◽  
Lucien Charroyer
Keyword(s):  
Mechanical Systems ◽  
Mathematical Community ◽  
Contact Dynamics ◽  
Strong Impact ◽  
Brake Squeal ◽  
Excited Vibration ◽  
Smooth Contact ◽  
Frictional Interface ◽  
The Stability ◽  
Friction Induced Vibration

The modeling of contact is one of the main features of contact dynamics in the context of friction-induced vibrations. It can have a strong impact on the numerical results and consequently on the design choices during the optimization or specification of industrial mechanical systems. This is particularly the case for scientific studies interested in brake squeal. The objective of the paper is to recall and to promote developments concerning the use of non smooth contact dynamics approach for numerical simulations based on finite element method. The specific problem of the prediction of self-excited vibration in the context of brake squeal is discussed. In order to illustrate the potential benefit for the mechanical community of using formulations and theoretical developments from the mathematical community, the stability analysis and the estimation of nonlinear vibrations of a brake system with multiple frictional interface is investigated.

Projective Jacobi and Gauss-Seidel on the GPU for Non-Smooth Multi-Body Systems

2014 ◽  
Author(s):  
Gabriel Nützi ◽  
Adrian Schweizer ◽  
Michael Möller ◽  
Christoph Glocker
Keyword(s):  
Granular Media ◽  
Large Scale ◽  
Contact Problems ◽  
Rigid Body Dynamics ◽  
Contact Dynamics ◽  
Problem Size ◽  
Body Dynamics ◽  
Smooth Contact ◽  
Multi Body ◽  
Speedup Factor

Large-scale contact problems with impacts and Coulomb friction arise in the simulation of rigid body dynamics treated within the non-smooth contact dynamics approach using set-valued force and impact laws. In this paper the parallelization of two popular numerical methods for solving such contact problems on the GPU, being the projected over-relaxed Jacobi (JOR Prox) and projected Gauss-Seidel iteration (SOR Prox), is studied in detail. Performance tests for the parallel JOR and SOR Prox iterations are conducted and a speedup factor of up to 16, depending on the problem size, can be achieved compared to a sequential implementation. This work forms the stepping stone to the simulation of granular media on a computer cluster.

Modelling of earthquake-induced pounding between adjacent structures with a non-smooth contact dynamics method

2021 ◽  
Vol 241 ◽  
pp. 112426
Author(s):  
T. Langlade ◽  
D. Bertrand ◽  
S. Grange ◽  
G. Candia ◽  
J.C. de la Llera
Keyword(s):  
Contact Dynamics ◽  
Adjacent Structures ◽  
Contact Dynamics Method ◽  
Smooth Contact ◽  
Dynamics Method
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