关键词: 零部件；道路模拟试验；伪损伤；加速方法

Abstract: To solve the problem that using proving ground signals directly in components and parts road simulation tests takes too much time, a spectrum acceleration editing method based on pseudo damage is proposed. In practice good acceleration effect is achieved while retaining 100% pseudo damage, and comparative analyses are conducted between the original spectrum and the accelerated spectrum from three perspectives: time-domain statistical characteristics, amplitude cumulative frequency, and power spectral density. The results show that the fatigue damage characteristics of the spectrum can be well preserved. The bench durability test shows that the failure location and failure mode of the spectrum after accelerated editing are consistent with that of the original spectrum, the number of cycles is close, and the test time is significantly shorten, which verifies the rationality and effectiveness of the method.

Key words: components and parts; road simulation test; pseudo damage; acceleration method