| AN FEM MODEL OF BUCKLING DISTORTION DURING WELDING OF THIN PLATE |
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| 作者姓名： | 汪建华 陆皓 村川英一 |
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| 摘 要： | ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅｂｕｃｋｌｉｎｇｄｉｓｔｏｒｔｉｏｎｓａｒｅｏｆｔｅｎｏｂｓｅｒｖｅｄｉｎａｔｈｉｎ－ｗａｌｌｗｅｌｄｅｄｓｔｒｕｃｔｕｒｅ．Ｉｔｉｓｏｆｉｍｐｏｒｔａｎｃｅｔｏｐｒｅｄｉｃｔａｎｄｐｒｅｖｅｎｔｓｕｃｈｄｉｓｔｏｒｔｉｏｎｓｃａｕｓｅｄｄｕｒｉｎｇｆｕｓｉｏｎｗｅｌｄｉｎｇ．Ｃｏｍｐａｒｅｄｗｉｔｈｔｒａｄｉｔｉｏｎ－ａｌＦＥＭａｎａｌｙｓｉｓ，ｔｈｅｔｈｅｒｍａｌａｎｄｍｅｃｈａｎｉｃａｌｂｅ－ｈａｖｉｏｒｓｉｎｗｅｌｄｉｎｇｈａｖｅｔｈｅｆｏｌｌｏｗｉｎｇｃｈ…
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AN FEM MODEL OF BUCKLING DISTORTION DURING WELDING OF THIN PLATE |
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| WANG Jian,hua.AN FEM MODEL OF BUCKLING DISTORTION DURING WELDING OF THIN PLATE[J].Journal of Shanghai Jiaotong university,1999(2). |
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| Authors: | WANG Jian hua |
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| Institution: | WANG Jian hua 1 |
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| Abstract: | In the analysis of buckling distortion during welding of thin plate both material nonlinearity and geometrical nonlinearity should be taken into account. The numerical simulations were performed using a 3 D thermal elastic plastic large deformation FEM model. The transient distortions during welding cycle were analyzed to show the generation of buckling phenomenon in a thin plate. The residual distortions and stresses can be also obtained. The computed distortions were compared with experimental values by laser measuring system and good agreement was obtained. The investigations show that buckling phenomenon is caused in the heating stage and it will turn to the opposite direction in the cooling stage and the deflection increases with the increasing of compressive stresses in the plate. |
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| Keywords: | buckling welding distortion finite element methods |
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