| 非均质焊接接头中J积分虚拟裂纹扩展计算方法研究 |
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| 引用本文： | 杨新岐,霍立兴,张玉风. 非均质焊接接头中J积分虚拟裂纹扩展计算方法研究[J]. 机械工程学报, 1995, 0(5) |
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| 作者姓名： | 杨新岐 霍立兴 张玉风 |
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| 作者单位： | 天津大学 |
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| 摘 要： | 将虚拟裂纹扩展（ＶＣＥ）算法推广应用于非均质焊接接头，建立了三维弹塑性状态下Ｊ积分参量的ＶＣＥ算法有限元程序。基于平面数值分析，详细考察了该算法在非均质焊接接头中的适用性。此外，讨论了焊接接头中三维状态下Ｊ参量沿裂纹前缘的分布规律。
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| 关 键 词： | 非均质，J积分，VCE算法，有限元 |
INVESTIGATION ON VIRTUAL CRACK EXTENSlON METHOD FOR J-INTEGRAL PARAMETER CALCULATIONS IN HETEROGENEOUS WELDED JOINT |
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| Yang Xinqi,Huo Lixing,Zhang Yufeng. INVESTIGATION ON VIRTUAL CRACK EXTENSlON METHOD FOR J-INTEGRAL PARAMETER CALCULATIONS IN HETEROGENEOUS WELDED JOINT[J]. Chinese Journal of Mechanical Engineering, 1995, 0(5) |
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| Authors: | Yang Xinqi Huo Lixing Zhang Yufeng |
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| Affiliation: | Tianjin University |
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| Abstract: | The virtual crack extension(VCE) method proposed by Parks and Delorenzi was extended and applied to the heterogeneous welded joints, and the three-dimensional (3D)elastic-Plasfic finite element program for J-integral calculations by VCE method is established based on Plane analyses, the applicability of this method in welded joints is thoroughly examined. Besides, the 3D distribution of J-integral along the crack front in welded joints is discussed. |
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| Keywords: | Heterogeneous J-integral VCE method Finite element |
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