doi:10.16186/j.cnki.1673-9787.2020.3.9

Received:2019/05/06

Revised:2019/06/24

Published:2020/05/15

Numerical analysis and experimental study on modal of brake disc

CHEN Guoqiang, LI Xiaofeng, ZHOU Long

School of Mechanical and Power Engineering， Henan Polytechnic University ，Jiaozuo 454000 ， Henan， China

Abstract:The brake disc is a key component in the brake system， its vibration characteristics are related to the noise stability of the whole brake system. A combination method of finite element analysis and experiments was proposed to study the natural frequency characteristics of the brake disc. The finite element model of the brake disc was established， and then the free mode and the constrained mode of the brake disc were analyzed. The free modal test platform was built. The excitation signal was generated by the hammer method， and the input and output signals of the system were collected by the sensor. The output signal was preprocessed and the spectrum of the brake disc natural frequency was obtained by the fast Fourier transform. It was found that the deformation of the brake disc was mainly the end face run-out， which easily resulted out a resonance with other components to generate resonance. Through data comparison analysis， the correctness of the finite element model and modal analysis result were verified， which layed a theoretical foundation for the design and selection of the brake disc and the noise reduction of the braking system.

Key words:brake disc;modal analysis;finite element analysis;free mode;constrained mode

制动盘模态的数值分析与试验研究_陈国强.pdf