Structural Optimization Design Of Automobile Disc Brake Based On Complex Working Conditions

In recent years,when automobiles encounter extreme environments such as rain and snow,low visibility,continuous long downgrades,sharp turns,and so on,the number of traffic accidents increases significantly.According to the types of accidents,they can be divided into two categories: first,accidents such as vehicle collisions caused by the driver’s own reasons,and second,traffic accidents caused by the failure of the vehicle itself,of which braking system failure is the most common failure of the vehicle itself.As the brake is an important part of the braking system,its failure mainly lies in the fact that the brake disc is subjected to a variety of mechanical loads during braking,and the surface temperature of the disc body will rise rapidly,which will lead to thermal fatigue of the brake disc,friction lining,etc.,and then thermal mechanical coupling failure will occur,greatly reducing the braking performance of the brake.Therefore,this paper carries out relevant research on the above issues,and plans to design a disc brake suitable for small cars.The research content of this paper is first to use Solid Works3 D software to complete the 3D modeling of the disc brake applicable to a small car,and then import the brake model into the finite element software ANSYS.By analyzing the mechanical properties of the brake disc,friction pad and other components under normal working conditions,the thermal structure coupling analysis of the stress field and temperature field of the ventilated brake disc under complex braking conditions is further carried out,The optimization scheme is proposed according to the analysis results.To some extent,the research in this paper provides a theoretical basis for the optimal design of disc brakes in extreme environments.