多轴非比例低周疲劳寿命估算方法的研究  

Investigation on Evaluation Method of Fatigue Life under Multi-axial Non-proportional Loading

作　　者：张莉[1] 唐立强 付德龙[2] 

机构地区：[1]哈尔滨工程大学,哈尔滨150001 [2]哈尔滨工业大学,哈尔滨150001

出　　处：《中国机械工程》2006年第1期95-98,共4页China Mechanical Engineering

基　　金：黑龙江省自然科学基金资助项目(A01-10)

摘　　要：利用临界面法、有限元法和实验分析方法对多轴加载条件下低周疲劳寿命估算问题进行了研究。确定了试件在单轴加载、双轴比例加载、双轴非比例加载、三轴比例加载和三轴非比例加载条件下,6种疲劳损伤参量的最大值及临界面位置。在此基础上,估算了试件在不同加载条件下的疲劳寿命,并对损伤模型进行评估。Evaluation of low fatigue life was studied under multi-axial non-proportional loading using critical plane, element and experimental method. The maximum and critical plane of six-fatigue damage parameters under uni-axial, multi-axial proportional and multi-axial non-proportional were determined. Based on this the fatigue lifes are calculated and the damage models are evaluated.

关 键 词：多轴非比例加载 损伤参量 寿命估算方法 临界面法 

分 类 号：O346.2[理学—固体力学]