Friction plate optimization method based on contact pressure of friction plate and brake disc

Abstract

The invention discloses a friction plate optimization method based on contact pressure of a friction plate and a brake disc. The method comprises the following steps: establishing a finite element model according to geometric parameters of a brake and material parameters of each component, and performing static solution on the established finite element model to obtain contact pressure data between the friction plate and the brake disc; according to the contact pressure data between the friction plate and the brake disc in the brake, calculating the standard deviation of the contact pressure of each unit of the friction plate , and when the standard deviation of the contact pressure of each unit of the friction plate is larger than a preset target value, adjusting material parameters of the friction plate in the brake until the standard deviation of the contact pressure of each unit of the friction plate is smaller than or equal to a preset target value. According to the method, the unit contact pressure standard deviation serves as an index for evaluating the uniformity degree of the contact pressure, so that the contact pressure between the brake disc and the friction plate is uniformly distributed as far as possible, and the problems of abnormal abrasion of the brake disc and the friction plate and brake shaking and brake noise caused by the abnormal abrasion are avoided.

Description

technical field [0001] The invention belongs to the technical field of braking, and in particular relates to the optimization design of friction linings of motor vehicles, in particular to a friction lining optimization method based on the contact pressure of friction linings and brake discs. Background technique [0002] Automobile brake is a very important part in automobile structure, and its performance has an important impact on driving safety. The friction between the brake disc and the friction plate has an important influence on the performance and service life of the brake. The abnormal wear of the brake disc directly affects the safe driving of the car, and leads to uneven thickness of the brake disc, resulting in a decrease in the braking performance of the brake. The thickness difference of the brake disc is the main factor affecting the brake judder of the disc brake. The brake vibration and noise problems caused by brake vibration will cause serious quality p...

AI Technical Summary

Problems solved by technology

However, the multi-piston design and the larger diameter of the piston branch mean that the cost will increase, which is not conducive to the product's advantage in the highly competitive automotive market.

[0004] In the prior art, the pressure between the friction plate and the brake disc is uneven, there is abnormal wear, and there is noise when braking

Images