摘要
以美国加州电力研究所（ＥＰＲＩ）的Ｊ积分工程估算法为基础，在一定的工程假定条件下，通过对焊接接头裂纹驱动力进行简单的工程分析，结合数值计算的结果，得出了焊接接头中裂纹驱动力Ｊ积分的工程估算法。对建议的估算方法与有限元的数值解进行了比较。经比较，证明了这些估算式在弹塑性条件下的正确性，使焊接接头裂纹缺陷的断裂驱动力参量计算成为可能。
Based upon the J domination and the electric power research institute EPRI/GE J estimation approach,an engineering treatment model of J integral is studied by taking a simple engineering assumptions.Synthesize the relevant data and result of finite element method,the J estimations of crack driving force of mis matched weldment is given.Comparing of the result,the datas which caculated by J estimation are in accord with the result derived by finite element method.So the J integral of mis matched welded shall be evaluat and use for assessment proceedure of welded structure containing defects.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
1998年第5期450-455,共6页
Nuclear Power Engineering
基金
国家自然科学基金
关键词
弹塑性断裂
强度组配
J积分
焊接接头
Elastic plastic fracture Mis matching of yield strength Mis matching of strain hardening exponent J integral
