| 含横向裂纹的力学不均匀焊接接头的J积分研究 |
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| 引用本文： | 田富强,贺定勇,李晓延,史耀武. 含横向裂纹的力学不均匀焊接接头的J积分研究[J]. 焊接, 2001, 0(2): 11-15 |
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| 作者姓名： | 田富强 贺定勇 李晓延 史耀武 |
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| 作者单位： | 北京工业大学材料学院 |
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| 基金项目： | 国家自然科学基金资助项目 !(5950 1 0 1 1 ) |
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| 摘 要： | 利用MARC有限元程序提供的Delorenzi虚拟裂纹扩方法计算了平面应力条件下不同强度匹配的含横向裂纹的焊接接头模型在不同载荷下的广义J积分并对其进行了修正。通过对焊缝与母材的强度差别及积分路径中包含的焊缝与母材界面长度的修正，得到了适用于含横向裂纹的力学不均匀焊接接头的修正J积分。
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| 关 键 词： | 虚拟裂纹扩展 焊接接头 横向裂纹 J积分 有限元 焊接结构 |
| 修稿时间： | 2000-10-10 |
STUDY ON J INTEGRATION OF MECHANICAL HETEROGENEOUS WELDED JOINT CONTAINING TRANSVERSE CRACK |
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| Tian Fuqiang,He Dingyong,Li Xiaoyan,Shi Yaowu. STUDY ON J INTEGRATION OF MECHANICAL HETEROGENEOUS WELDED JOINT CONTAINING TRANSVERSE CRACK[J]. Welding & Joining, 2001, 0(2): 11-15 |
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| Authors: | Tian Fuqiang He Dingyong Li Xiaoyan Shi Yaowu |
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| Affiliation: | Beijing Polytechnic University Tian Fuqiang He Dingyong Li Xiaoyan Shi Yaowu |
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| Abstract: | Extended J-integration of different strength mismatched welded joint containing transverse crack under plain stress condition was calculated and modified using Delorenzi virtual crack extension method of MARC finite element program. By modifying the influence of strength mismatching and the length of interface between weld metal and base metal, the modified J integration of mechanical heterogeneous welded joint containing transverse crack is established. |
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| Keywords: | virtual crack extension welded joint transverse crack J-integral finite element |
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