Finite element modeling of disc brake elements interaction

Authors

  • V. A. Sukhanova Department of Graphics, Education Establishment “Belarusian State University of Transport”, 34, Kirova str., Gomel 246653

DOI:

https://doi.org/10.30838/P.CMM.2415.270818.129.242

Keywords:

finite element modeling, contact interaction, brake disc, brake pad

Abstract

Purpose. Experience in the operation of the brakes of vehicles shows the presence of wear and damage, the appearance of which does not fully satisfy to the results of analytical computations. Existing methods of numerical analysis make it possible to perform computations the contact interaction of a disk and a brake pad only by using high-performance computers. The purpose of this research is to develop numerical solution methods for computations the dynamic contact interaction of bodies simulating the elements of braking systems which can be realized on a personal computer. Methodology. Finite element modeling of the dynamic contact interaction of brake disk with a brake pad in the ANSYS / LS-DYNA software is proposed. It was assumed that the materials of the disc and the pad have elastoplastic properties. When creating a finite element grid, an eight-node volumetric element SOLID164 and a four-layer shell SHELL163 are used. Findings. The allocation of stresses and plastic deformations on the contact surfaces of the brake disc and pad is determined for different mesh splitting of the finite elements. It is shown that extremes of plastic deformations are observed near the nodes of a larger finite element mesh. Dependences of the dimension of plastic deformation at different points of brake disk versus time are presented. It is shown that the first and second disk rotations make the main contribution to plastic deformations. Originality. A method for the finite element solution of the problem of dynamic contact interaction of disc brake elements has been developed, which makes it possible to estimate the values of the maximum allowable deformations, and the forces of pressing the brake pad, in which plastic deformations will not be observed. Practical value. The application of the developed method for solving the dynamic contact problem allows for simulation on personal computers that do not have high performance. The obtained results can be used in the development of new designs of disc brake elements with improved tribotechnical properties.

References

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Published

2018-11-27

Issue

Section

Computer systems and information technologies in education, science and management