The Simulation Analysis Of Brake And Design Of Bench Mechanical Test System

From the last century, the problem of automobile brake noise generated in the braking hasbeen a difficult problem to solve urgently. The car users and manufacturers have been plaguedall the time. Although many experts did a considerable amount of analysis and test research inthe aspects, but the noise mechanism is still not fully grasped. In recent years, during thedevelopment of car, the brake noise has become one of hot topics in the NVH. Therefore, theresearch of noise mechanism and noise reduction methods has an very important practicalsignificance.After reading a large number of foreign and Chinese literature about the brake noise, got adeep understanding of noise generation Mechanism and precautionary measure. Then use thepro/e software to model the important parts of disc brake, such as brake plate, pad and steelbacking. And then, use the analysis software ANSYS Workbench12.0to have a dynamicanalysis, preliminarily find out the cause of braking scream. Thinking that the structuraldesign causes the noise and put forward the modification measures. After then, import themodified model into ANSYS Workbench12.0to have a dynamic analysis. The result showsthe feasibility of the measures. Then propose the noise reduction method with the damping.This topic is done on the basis of JF122inertial bench with noise test functions producedby Ji da institute of electrical and mechanical equipment. So research the inertia matching andcalculation of the bench. At last, test the SPL of modified brake assembly, the test resultshows the sound pressure level is greatly reduced.