| 非均质焊接接头中J主导的云纹干涉法实验研究(英文) |
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| 引用本文： | 康继东.非均质焊接接头中J主导的云纹干涉法实验研究(英文)[J].南京航空航天大学学报(英文版),1997(2). |
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| 作者姓名： | 康继东 |
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| 作者单位： | 南京航空航天大学动力工程系 南京210016 |
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| 摘 要： | 采用云纹干涉法研究了焊接接头中应用J积分作为裂纹尖端塑性奇异性参量的可行性.结果表明,在所研究的大多数情形下,u场与v场中的J主导无效.因此,采用J积分作为用来预测焊接结构安全性的控制参量是不正确的.
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| 关 键 词： | 路径积分 焊接接头 云纹干涉法 J主导 非均质性 |
EXPERIMENTAL STUDIES ON J-DOMINANCE IN HETEROGENEOUS WELDED JOINTS BY MOIRE INTERFEROMETRY |
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| Kang Jidong.EXPERIMENTAL STUDIES ON J-DOMINANCE IN HETEROGENEOUS WELDED JOINTS BY MOIRE INTERFEROMETRY[J].Transactions of Nanjing University of Aeronautics & Astronautics,1997(2). |
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| Authors: | Kang Jidong |
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| Abstract: | Moire interferometry method is introduced to study the feasibilities of J integral as a plastic singularity parameter at the tip of the notch in the welded joints. The results show that J dominance in most studied cases is not validated in v and u displacement fields. Therefore, it can be concluded that J-integral as controlling parameter used to estimate the safety of welded structures is not always valid. |
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| Keywords: | path integrals welded joints moire interfe-rometry J-dominance heterogencity |
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