基于FEMFAT的柴油机活塞低周热疲劳寿命预测  

Low Cycle Fatigue Life Prediction of Diesel Engine Piston Based on FEMFAT

作　　者：许春光[1] 王根全[1] 文洋[1] 李鹏[1] 景国玺[1] 

机构地区：[1]中国北方发动机研究所,天津300400

出　　处：《内燃机》2017年第2期55-57,62,共4页Internal Combustion Engines

摘　　要：我们应用abaqus有限元分析软件,对某型柴油机活塞进行了起停工况下活塞温度场、材料高温下塑性及蠕变性能的应力应变场计算。采用FEMFAT疲劳分析软件进行了活塞低周热疲劳寿命的预测,分别考虑了疲劳及蠕变损伤的影响,为柴油机活塞的研发及结构改进设计提供参考。Abstract： The temperature fiehl of a diesel engine piston is calculated by abaqus FEA soflwareon start-stop condition, and also the response of the stress and strain considering the plastic and creep properties of the material. The low eycle fatigue life is predicted by FEMFAT fatigue analysis software, considering respectively the effect of fatigue and creep damage, which provide a reference for research and design of structure optimizing of a diesel engine piston.

关 键 词：低周疲劳 疲劳损伤 蠕变损伤 寿命预测 

分 类 号：TK413[动力工程及工程热物理—动力机械及工程]