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Estimation of dynamic stress spectrum distribution in structural fatigue test
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作者 guangjin xue Kai Li +3 位作者 Wu Pan Qiang Li Bingjie Wang Shouguang Sun 《Theoretical & Applied Mechanics Letters》 CAS 2013年第2期51-56,共6页
The determination of structural dynamic stress spectrum distribution is of great signifi- cance in the structural fatigue strength evaluation as well as reliability design. In previous empirical data processing method... The determination of structural dynamic stress spectrum distribution is of great signifi- cance in the structural fatigue strength evaluation as well as reliability design. In previous empirical data processing methods, the data grouping and distribution fitting were excessively coarse and contained distinctive defects. This paper proposed an effective approach to statistically group actual measured dynamic stress data and validly extrapolate the combined distribution to fit the dynamic stress spectrum distribution. This approach has been verified its effectiveness through chi-square test, stress spectrum extrapolation and damage calculation in dynamic stress study. 展开更多
关键词 data grouping combined distribution damage calculation maximum value estimation stress spectrum extrapolation
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