| 6061铝合金平板对接焊接接头拉伸性能研究 |
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| 引用本文： | 车洪艳,朱亮,陈剑虹,徐文福,吕先锋.6061铝合金平板对接焊接接头拉伸性能研究[J].兰州理工大学学报,2008,34(2):27-30. |
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| 作者姓名： | 车洪艳 朱亮 陈剑虹 徐文福 吕先锋 |
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| 作者单位： | 兰州理工大学,材料科学与工程学院,甘肃,兰州,730050;兰州理工大学,甘肃省有色金属新材料重点实验室,甘肃,兰州,730050 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 采用TIG焊获得6061铝合金平板对接焊接接头,在万能拉伸机上进行拉伸试验;应用双孔微剪切试验结合有限元计算,用反推法得到焊缝和热影响区的力学性能参数及损伤参数;应用ABAQUS/Explicit模拟平板对接焊接接头在拉伸载荷作用下的变形和损伤行为,并与实验结果进行对比.结果表明,仿真结果与实验结果吻合得很好.改变不同区域的损伤参数,发现弱化区的损伤参数对仿真结果影响最为明显,因此要得到屈服强度及断裂强度较好的焊缝主要是控制弱化区的材料性能.
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| 关 键 词： | 微剪切 损伤 有限元 |
| 文章编号： | 1673-5196(2008)02-0027-04 |
| 修稿时间： | 2007年11月26 |
Investigation of tension behavior of butt weld on plate of aluminum alloy 6061 |
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| CHE Hong-yan,ZHU Liang,CHEN Jian-hong,XU Wen-fu,LU Xian-feng.Investigation of tension behavior of butt weld on plate of aluminum alloy 6061[J].Journal of Lanzhou University of Technology,2008,34(2):27-30. |
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| Authors: | CHE Hong-yan ZHU Liang CHEN Jian-hong XU Wen-fu LU Xian-feng |
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| Abstract: | TIG butt weld on the plate of aluminum alloy 6061 was tested for its tension behavior on an universal tension apparatus.By using the double-hole micro-shearing experiment and finite element computation, the mechanical parameters and damage parameter of the weld in its thermo-affected area were obtained with retro-deduction method.The deformation and damage behavior of butt weld of the plate under the action of tension load was simulated with ABAQUS/Explicit and compared with its experimental result,showing that they were consistent well with each other.It was found that,when the damage parameter of different areas were altered,the influence of damage parameter in weakened area on the simulation result was most remarkable,so that it would be essential to control the material property of the weakened area in order to obtain a weld with better yield strength and fracture strength. |
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| Keywords: | micro-shearing damage finite element |
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