| 焊接接头断裂驱动力参量的数值研究 |
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| 引用本文： | 张敏,史耀武.焊接接头断裂驱动力参量的数值研究[J].化工机械,1996,23(6):36-41. |
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| 作者姓名： | 张敏 史耀武 |
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| 作者单位： | 西安交通大学 |
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| 摘 要： | 采用有限元方法对焊接接头的断裂参量Ｊ积分进行了系统计算。结果表明，焊缝区存在裂纹的焊接接头其周边母材的材料性能变化对整个接头的Ｊ积分断裂参量有很大影响。在同一载荷作用下，焊缝材料不变时，高屈服强度母材焊接接头的裂纹驱动力明显小于低屈服强度母材焊接接头的驱动力，高硬化母材则对整个焊接接头驱动力有明显的加速作用。
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| 关 键 词： | 焊接接头 J积分 硬化指数 |
Numerical investigation on the parameters of the crack driving force of welded joints. |
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| Zhang Min,Shi Yaowu,Zhang Xinping,Fu Jianqin,Zhang Jianxu.Numerical investigation on the parameters of the crack driving force of welded joints.[J].Chemical Engineering & Machinery,1996,23(6):36-41. |
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| Authors: | Zhang Min Shi Yaowu Zhang Xinping Fu Jianqin Zhang Jianxu |
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| Abstract: | A systematical calculation was conducted for the J integral crack parameter of a welded joint using the finite element method.The results showed that the material performance change of the mother material around the welded joint with cracks in weld seams had a large effect on the J integral crack parameter of the whole welded joint.Under the same action of loading,the crack driving force of the welded joint of the mother material with high yield strength was evidently lower than that of the welded joint of mother material with low yield strength when the weld seam material was same .The mother material with high hardening had an obvious accelerating action on the driving force of the whole welded joint. |
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| Keywords: | Welded Joint J Integral Hardening Index |
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