ANSYS镀锌钢板电阻点焊温度场数值模拟

Title  TEMPERATURE FIELD SIMULATION OF RESISTANCE SPOT WELDING OF ZINC-COATED STEELS
Abstract
This paper simulate 1.0mm+1.0mm galvanized steel spot welding by using the finite element software ANSYS,seclecting hard welding specifications and soft welding specifications by orthogonal experiment.From the simulation results,we know that if using of hard specifications,when welding current is 12kA,welding time is 8cyc and electrode force is 4000N,the simulation was a more reasonable size nugget and if using soft specification,when welding current is 9kA,welding time is 14cyc and electrode pressure is 2200N,simulated nugget the size of a more reasonable.According to the results of numerical simulation of temperature distribution, three main welding parameters that the welding current,welding time and electrode force were analyzed.Studying effect on galvanized steel resistance spot welding joint quality.And then a confirmatory test was carried out to verify the simulation results. 源`自*六)维[论*文'网www.lwfree.cn
Keywords  Galvanized steel  Spot welding temperature field  ANSYS  Numerical Simulation

1  绪论    1
1.1  课题背景及研究意义    1
1.2  电阻点焊的焊接原理    1
1.3  镀锌钢板电阻点焊的特点及研究    2
1.4  镀锌钢板电阻点焊温度场数值模拟    2
1.5  总结    3
2  试验材料及设备    4
2.1  试验材料    4
2.2  焊接试验设备    4
3  热电耦合模型    6
3.1  基础理论    6
3.2  几何模型    7
3.3  材料属性    8
3.4  网格划分    8
3.5  边界条件及载荷    8
3.6  求解计算    8
3.7  后处理    8
4  点焊规范正交试验模拟    8
4.1  点焊硬规范正交试验模拟    8
4.2  点焊软规范正交试验模拟    8
5  焊接参数对温度场影响    8
5.1  焊接时间对温度场影响    8
5.2  电极压力对温度场影响    8
5.3  焊接电流对温度场影响    8
6  验证性试验    8
6.1  验证方案    8
6.2  验证结果    8

1  绪论
1.1  课题背景及研究意义

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