关键词: 疲劳谱, 载荷顺序效应, 排列顺序效应

Abstract: The present paper builds two dimensional loading distribution, and constructs three kinds of fatigue spectra according to the damage laws of the loading sequential effects. By analysis of the loading sequential effects and arranging sequential effects of the spectra from two dimensional loading distribution, it is found that the loading sequential effects are only influenced by the total mean value of loads and it is possible to influence life prediction greatly as the total mean value increases. But the arranging sequential effects are so small that the options of building spectra do not greatly influence lives of parts.

Key words: fatigue spectra, loading sequential effects, arranging sequential effects