用于疲劳可靠性设计的P－S_α－S_m－N曲面拟合法

P-S_α-S_m-N Curved Surface Fitting Method for the Reliable Design of Structure Fatigue Life

本文以线性相关系数最优为基础，给出了Ｐ－Ｓα─Ｓｍ─Ｎ（概率─幅值─均值─寿命）曲面拟合方法。通过对大量Ｐ－Ｓα─Ｓｍ─Ｎ数据进行处理发现，使用该方法拟合Ｐ－Ｓα－Ｓｍ－Ｎ试验数据具有简便、拟合程度高等特点。

In this paper, a method to fit the P-Sa-Sm-N curved surface is proposed on the basis of maximum linear interrelate factor. By this method, amount of test data is handled with high degree of fitting exactness. By the use of P-Sa-Sm- N curved surface, the structure fatigue life may be estimated simply, conveniently and exactly.