摘要
本文对非对称荷载下的疲劳强度临界值预测公式和疲劳寿命预测公式进行了系统深 入的研究，分析了著名的Ｇｏｏｄｍａｎ公式，Ｓｏｄｅｒｂｅｒｇ公式和Ｇｅｒｂｅｒ公式的适用条件，建立了 一种新的疲劳强度临界值预测公式和疲劳寿命预测公式。新公式的最大优点是，对实际破坏 面的形状不做任何限制，并可使用任意疲劳寿命实验数据进行拟合。
A systematic study is made on those formula by which the critical fatigue strength or fatigue life of a structure under asymmetric loading can be estimated. The prerequisites for some famous formula such as Goodman formula, Soderberg formula and Gerber formula are discussed, and a unified formula for predicting the critical fatigue strength or fatigue life of a structure under asymmetric loading is established. The new formula has two important features: 1) it is valid to any shape of failure surface; 2) its parameters can be correctly estimated from any type of experimental data of fatigue.
出处
《工程力学》
EI
CSCD
北大核心
2001年第2期92-98,共7页
Engineering Mechanics
基金
国家自然科学基金!(59505011
59778039)
高校重点实验室基金资助项目
关键词
非对称荷载
疲劳强度
疲劳寿命
临界破坏面
Failure (mechanical)
Strength of materials
Structural analysis
Structural loads
Surface structure
