摘要
The performance in vibration environment of switching apparatus containing mechanical contact is an important element when judging the apparatus’s reliability. A piecewise linear two-degrees-of-freedom mathematical model considering contact loss was built in this work, and the vibration performance of the model under random external Gaussian white noise excitation was investigated by using Monte Carlo simulation in Matlab/Simulink. Simulation showed that the spectral content and statistical characters of the contact force coincided strongly with reality. The random vibration character of the contact system was solved using time (numerical) domain simulation in this paper. Conclusions reached here are of great importance for reliability design of switching apparatus.
The performance in vibration environment of switching apparatus containing mechanical contact is an important element when judging the apparatus＇s reliability. A piecewise linear two-degrees-of-freedom mathematical model considering contact loss was built in this work, and the vibration performance of the model under random external Gaussian white noise excitation was investigated by using Monte Carlo simulation in Matlab/Simulink. Simulation showed that the spectral content and statistical characters of the contact force coincided strongly with reality. The random vibration character of the contact system was solved using time （numerical） domain simulation in this paper. Conclusions reached here are of great importance for reliability design of switching apparatus.
基金
Project (No. FEBQ24409102) supported by the Space Technology Innovation Fund, China
关键词
接点系统
随机振动
蒙特卡罗模拟
理论分析
Contact system, Random vibration, Monte Carlo simulation, Matlab/Simulink
