钻柱表面裂纹在拉扭作用下的弹塑性断裂性能

2014年 36卷 第3期
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Elastic-plastic Fracture Mechanics Analyses of Surface Cracks in Drill String Subjected to Combined Loading
赵广慧,汪浩瀚,石健,赵莉
西南石油大学机电工程学院,四川成都610500
School of Mechanical Engineering,Southwest Petroleum University,Chengdu,Sichuan 610500,China
钻柱; 半椭圆表面裂纹; J 积分; 弹塑性断裂; 有限元;
Key words:drill string; semi-elliptical surface crack; J-integral; elastic-plastic fracture; finite element;