Method for simulating contact pressure of friction plates with surface morphological information

Abstract

The invention discloses a method for simulating contact pressure of friction plates with surface morphological information. According to the method, measure concepts of image processing and contact analysis are utilized to superpose surface morphological information into model grids so as to realize simulation of contact detail information of friction plates. According to the method, contact pressure of friction plates with surface morphological information can be simulated, and micro surface information is added onto a macro friction plate contact model, so that contact pressure simulation distribution of the friction plates is closer to the practical condition. Through combining a micro contact theory and macro practical engineering, the contact pressure simulation of the friction plateshas theoretical support and using meaning.

Description

technical field [0001] The invention belongs to the technical field of friction pair pressure distribution simulation technology, and in particular relates to a friction plate contact pressure simulation method containing surface topography information. Background technique [0002] Friction elements widely exist in basic components such as vehicle clutches and brakes, and the performance of friction elements directly affects the performance indicators of clutches and brakes. The torque research of friction elements has always been a research hotspot. According to Coulomb's friction theory, torque is produced by the product of friction coefficient and normal pressure, thus the research of friction coefficient and normal pressure is separated. Whether the coefficient of friction of the friction pair can be predicted more accurately and the design of uniform pressure distribution can be related to whether the performance of the friction plate can be realized according to the d...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to solve the problem that the macroscopic pressure simulation of the friction plate cannot reflect the microscopic local topography and cause uneven pressure, and provide a method for simulation of the contact pressure of the friction plate containing surface topography information, which is effective The advantage of adding the microscopic local topography information of the friction pad to the contact pressure simulation of the friction pad is that by measuring the surface topography of the real friction pad, the surface information is processed, and the mathematical model of the surface topography and contact stiffness is established. The software integrates the microscopic information of the friction plate with the macroscopic structure, and conducts contact simulation with shape information on the friction plate to provide a more realistic reference for the pressure distribution of the friction plate

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