| 关于焊接接头分区不均匀裂纹体的J积分 |
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| 引用本文： | 郑耀.关于焊接接头分区不均匀裂纹体的J积分[J].焊接学报,1990,11(4):245-250. |
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| 作者姓名： | 郑耀 |
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| 作者单位： | 杭州 浙江大学 |
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| 摘 要： |
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| 关 键 词： | 焊接接头 裂纹 J积分 |
| 收稿时间： | 1990/9/10 0:00:00 |
ON THE J INTEGRAL FOR REGIONAL HETEROGENEOUS WELDED JOINTS WITH CRACKS |
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| Zheng Yao.ON THE J INTEGRAL FOR REGIONAL HETEROGENEOUS WELDED JOINTS WITH CRACKS[J].Transactions of The China Welding Institution,1990,11(4):245-250. |
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| Authors: | Zheng Yao |
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| Affiliation: | Zhejiang University |
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| Abstract: | Proposing a counter example,it is proved that J integral is not conservative in regional heterogeneous media.Noticing the discontinuity of stress and strain components somewhere,J* integral is presented to modify J* integral.The pathindependence and the physical meaning of the J* integral,and the energy expression J*=-1∂U/B∂a are verified simply.The concept and the constitution approach of interface elements are put forward for regional heterogeneous media in elastoplastic FEM analysis. |
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| Keywords: | Welded joint Cracking Integral |
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