噪声与振动控制Issue(1)：53-56,4.DOI:10.3969/j.issn.1006-1335.2016.01.011
盘式制动器NVH性能的时-频域耦合仿真方法
Coupling Simulation Method for Disc Brake NVH Performance Evaluation in Time-frequency Domain
摘要
Abstract
During car braking, NVH performance is of great significance for ride comfort and environmental noise prevention. Currently, the conventional simulation method is the complex eigenvalue analysis (CEA) method. But this method usually gets more squeal frequencies than the test results which may cause misjudgments. So, the coupling dynamic simulation method in the time-frequency domain was brought up to analyze the NVH performance of disc brakes. Based on the finite element platform of ABAQUS, and according to the international noise test standard SAE J2521, both the CEA method and the implicit-explicit coupling simulation method were adopted to analyze the unsteady response of a disc brake. And the acceleration-frequency response curve of the brake and the frequency sampling points of the braking squeal were obtained. Both results from implicit-explicit coupling simulation and CEA method were compared with the test results. Results show that the CEA can get more squeal frequencies than the test results, but the results from time-frequency domain coupling method are in good agreement with the test data, which can more accurately predict the frequency values of the brake squeal.关键词
振动与波/盘式制动器/NVH/时-频域耦合/CEA/制动尖叫Key words
vibration and wave/disc brake/NVH/time-frequency domain coupling/CEA/braking squeal分类
机械制造引用本文复制引用
彭涛,周亨,田振勇..盘式制动器NVH性能的时-频域耦合仿真方法[J].噪声与振动控制,2016,(1):53-56,4.基金项目
国家自然科学基金资助项目(51375519)；重庆交通大学研究生教育创新基金 （51375519）
