This paper describes tools for numerical modelisation which enable the understanding of the appearance of the vibration of structure generated by the frictional contact between two bodies (the excitation source being friction). The dynamic finite element code PLASTD is used to reproduce transitory phenomena generated at the contact interface. This code includes contact and friction algorithms based upon the formulation of Lagrange multipliers. A numerical study of the dynamic response of a 2D mechanical model composed of a deformable plane in relative translation and unilateral contact with Coulomb friction with a rigid surface is presented. The steady sliding solution is generically unstable and leads to a dynamic response which leads to the generation of instabilities characterized by the appearance of sliding-sticking or sliding-sticking-separation waves. It is important to notice that those instabilities appear even with a constant friction coefficient. These simulations have permitted to obtain the local contact conditions (kinematics, tribological state, contact stresses, etc). The kinematics shows the existence of local impacts and sliding at high frequencies. Furthermore, local normal pressure is much higher than that expected for a smooth surface. Finally, a 3D simulation of braking is carried out. We focused on the vibration of the disc and the brake pad which caused noises due to the generation of interface instabilities.
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STLE/ASME 2003 International Joint Tribology Conference
October 26–29, 2003
Ponte Vedra Beach, Florida, USA
Conference Sponsors:
- Tribology Division
ISBN:
0-7918-3706-8
PROCEEDINGS PAPER
Finite Element Simulation of Dynamic Instabilities in Frictional Sliding Contact
L. Baillet,
L. Baillet
INSA de Lyon, Villeurbanne Cedex, France
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V. Linck,
V. Linck
INSA de Lyon, Villeurbanne Cedex, France
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S. D’Errico,
S. D’Errico
INSA de Lyon, Villeurbanne Cedex, France
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B. Laulagnet,
B. Laulagnet
INSA de Lyon, Villeurbanne Cedex, France
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Y. Berthier
Y. Berthier
INSA de Lyon, Villeurbanne Cedex, France
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L. Baillet
INSA de Lyon, Villeurbanne Cedex, France
V. Linck
INSA de Lyon, Villeurbanne Cedex, France
S. D’Errico
INSA de Lyon, Villeurbanne Cedex, France
B. Laulagnet
INSA de Lyon, Villeurbanne Cedex, France
Y. Berthier
INSA de Lyon, Villeurbanne Cedex, France
Paper No:
2003-TRIB-0260, pp. 25-30; 6 pages
Published Online:
January 7, 2009
Citation
Baillet, L, Linck, V, D’Errico, S, Laulagnet, B, & Berthier, Y. "Finite Element Simulation of Dynamic Instabilities in Frictional Sliding Contact." Proceedings of the STLE/ASME 2003 International Joint Tribology Conference. Contact Mechanics. Ponte Vedra Beach, Florida, USA. October 26–29, 2003. pp. 25-30. ASME. https://doi.org/10.1115/2003-TRIB-0260
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