| 异厚度铝合金薄板激光拼焊温度场数值模拟 |
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| 引用本文： | 余淑荣,熊进辉,樊丁,陈剑虹.异厚度铝合金薄板激光拼焊温度场数值模拟[J].焊接学报,2007,28(5):17-20. |
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| 作者姓名： | 余淑荣 熊进辉 樊丁 陈剑虹 |
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| 作者单位： | 1. 兰州理工大学,有色金属合金及加工教育部重点实验室,兰州,730050;兰州理工大学,甘肃省有色金属新材料省部共建国家重点实验室,兰州,730050
2. 兰州理工大学,有色金属合金及加工教育部重点实验室,兰州,730050 |
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| 基金项目： | 国家重大项目前期预研项目
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教育部春晖计划项目
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甘肃省自然科学基金 |
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| 摘 要： | 利用ANSYS软件对异厚度铝合金激光拼焊的温度场进行三维瞬态有限元分析.为了提高计算精度和效率,采用过渡网格划分形式划分网格以保证焊缝处网格足够细小.选取高斯函数分布的热源模型,利用ANSYS软件的APDL语言编写程序实现移动热源的加载.在模拟中既考虑一般激光焊接中材料热物理性能参数的温度相关性、熔化潜热、边界条件、等离子体、熔池对流、保护气体等对温度场的影响,又考虑异厚度铝合金激光拼焊的特性.利用高温热电偶检测异厚度铝合金激光拼焊过程中的温度场,将模拟值与实测值进行对比分析,结果表明,模拟值与实测值吻合良好.
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| 关 键 词： | 铝合金 激光拼焊 异厚度 温度场 数值模拟 厚度 铝合金 激光拼焊 温度场数值模拟 thickness different plate aluminum alloy thin laser welding temperature field simulation 结果 分析 实测值 过程 检测 热电偶 高温 特性 |
| 文章编号： | 0253-360X（2007）05-017-04 |
| 收稿时间： | 2006/6/2 0:00:00 |
| 修稿时间： | 2006-06-02 |
Numerical simulation on temperature field in laser welding of thin aluminum alloy plate with different thickness |
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| YU Shurong,XIONG Jinhui,FAN Ding and CHEN Jianhong.Numerical simulation on temperature field in laser welding of thin aluminum alloy plate with different thickness[J].Transactions of The China Welding Institution,2007,28(5):17-20. |
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| Authors: | YU Shurong XIONG Jinhui FAN Ding and CHEN Jianhong |
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| Affiliation: | Key Laboratory of Non-ferrous Metal Alloys, The Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, China;State Key Laboratory of Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China,Key Laboratory of Non-ferrous Metal Alloys, The Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, China,Key Laboratory of Non-ferrous Metal Alloys, The Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, China;State Key Laboratory of Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China and Key Laboratory of Non-ferrous Metal Alloys, The Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, China;State Key Laboratory of Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China |
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| Abstract: | By using ANSYS,the 3D temperature field of laser welding for aluminum alloy of different thickness were simulated.In order to improve solution accuracy and efficiency,transition mesh and Gauss function heat source model were used,and APDL in ANSYS was used to compile program to realize the load of moving heat source.The effects of temperature-dependence material parameters and potential heat,boundary conditions,plasma,convection in molten pool and characteristics of different thickness were considered in the model.Using high-temperature thermocouple,the temperature was measured.It is shown that the simulation results are in accordance with the experimental results. |
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| Keywords: | aluminum alloy laser welding different thickness temperature field numerical simulation |
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