谱载荷下疲劳寿命的累积破坏率法研究  

THE RESEARCH ON ACCUMULATIVE DESTRUCTION RATIO METHOD OF FATIGUE LIFE UNDER SPECTRUM LOAD

作　　者：丁群[1] 郑晓阳[1] 谢基龙[1] 

机构地区：[1]北方交通大学机械系,北京100044

出　　处：《力学与实践》2000年第3期22-24,共3页Mechanics in Engineering

摘　　要：提出一种新的估算谱载荷下疲劳寿命的方法，即累积破坏率法，该方法根据等幅试验结果，推导出母体的特性，从而利用累积破坏率法估算谱载荷下的疲劳寿命．该方法简便实用，其预测能力明显优于其它方法．This article presents a new method to es-timate fatigue life under spectrum load, accumula-tive destruction ratio method. According to the con-stant amplitude experimental results, this methodcan obtain the characteristics of paxent materialand estimate the fatigue life under spectrum loadwith accumulative destruction ratio method. Thismethod is easy to use and the result of estimationin some cases is better than that of other methods.

关 键 词：谱载荷 疲劳寿命 累积破坏率法 

分 类 号：O346.2[理学—固体力学] O347[理学—力学]