The Study On Stabilization And Transfer Path Of Vibration Of Floating Disk Brake

The influence of braking vibration and noise of automobile on security and environment is great. In this thesis, the vibration characteristic of the calip of brake is discussed based on the vibration source and its transfer path, and the technical ways to improve the brake stability of the calip is also studied.A new vibration transient analysis model of the brake components are established based on the structural feature of calip. The finite element analysis(FEA) of vibration frequency among parts shown that the main mechanism resulting from squealing frequency occurs at the case of the natural frequency between the two parts being near. The result provided theory basis for the body structural design of brake calip.Based on the research of harmonic response FEA between brake calip and brake disc, it is evident that braking stability can be improved by changing the construction parameter of brake components. The analysis also shows that within certain range, to change the design parameter of the calip body can improve the stability of braking system. Especially, the stability and breaking noise of the brake can effectively improved by increasing the thickness size of brake disc.As one of brake elements of the calip body, the brake fluid is simplified and as an elastomer is considered into an analysis model for studying the vibration stability of the calip body. The result shows that the influence on vibration stability of brake calip is not remarkable.The rigid body model of complete automobile is built by using the software of ADAMS/View and used the vibration module of ADAMS to analyze the transfer path of braking vibration. The study discovers the joint between gimbal and steering disc plays an important role in vibration transfer of braking system, it amplifies the vibration signal.For confirming the analyzing result above, a tester was used to measure the vibration characteristics of the different position of calip body. The results shown that the vibrating signal on the calip changes with the position measured point, it is evident that the theoretical model in the article is correct and can used in engineering to analyze the vibrating phenomena of the calip.