焊接接头弹塑性断裂力学分析工程方法研究  

A Study of Engineering Method for Elastic-Plastic Fracture Analysis of Welded Joints

作　　者：张式程[1] 田锡唐[1] 

机构地区：[1]哈尔滨工业大学焊接教研室

出　　处：《哈尔滨工业大学学报》1990年第1期93-98,共6页Journal of Harbin Institute of Technology

摘　　要：本文研究结果表明:美国电力研究院(EPRI)提出的弹塑性断裂力学分析的工程方法(即EPRI方法)不适用于非均匀介质。为了对非均质焊接接头进行弹塑性断裂力学分析,本文对EPRI方法进行了修正,得到了一定条件下中心裂纹模型的修正系数C_J,C_(?)、C_v,并以此为基础研究了非均质焊接接头塑性断裂力学分析的工程方法。The results in this paper show that the EPRI metho, ad engineering method for elastic-plastic fracture analysis proposed by Electric Power Research Institute(USA), is not suitable for welded joints with mechanical heterogeneity. A modification to the EPRI method is made and the modification coefficients C_J, C_δ and Cv for the centre cracked panels are obtained. Based on the modification, an engineering method for elastic-plastec fracture analysis of welded joints with mechanical heterogeneity is studied.

关 键 词：焊接 接头 弹塑性 断裂 工程方法 

分 类 号：TG407[金属学及工艺—焊接]