摘要
为解决两级载荷作用下的材料常在损伤值不为一时破坏的问题 ,在原有常用疲劳累积理论的基础上 ,考虑加载顺序与领域潜在损伤对材料疲劳寿命的影响 ,首先建立了一种线性疲劳损伤累积模型及其数学公式 .然后利用两种材料疲劳实验数据 ,通过该模型预测其疲劳寿命 .所得结果符合实际 .
In order to solve the problem of fatigue damage under a two-level load which is not always equal to one, based on the conventional accumulative damage theories, an accumulative linear damage model and its math formula have been proposed with the effect of load sequence and domanial latent damage. Experimental data obtained with two kinds of materials and fatigue life established by using the model are in good agreement with the actual measurements, which shows that it is feasible to use the model and its formula to forecast the material life.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2003年第5期608-610,共3页
Journal of Harbin Institute of Technology
