Load spectrum compilation of accelerated life of bellows exposed to onboard coupled excitation
The bellows of a certain commercial vehicle exhaust system were employed as the research object.The multi-dimensional stochastic excitation of the bellows was sampled by vehicle road test,and its decoupling algorithm was discussed.The multi-axial fatigue life of the bellows was evaluated,and its accelerated life load spectrum compilation based on time domain damage retention method was investigated.The accelerated life load spectrum was reduced to 17.86%of the original spectrum,which provides the basis for design of accelerated life test of the bellows.
NETL
NSTL
万方数据
