基于ANSYS的SUS430钢激光焊接温度场模拟仿真研究  

Research on Simulation of Laser Welding Temperature Field of SUS430 Steel Based on ANSYS

作　　者：秦继林[1] 朱佳[1] 韩蓓[1] 张玉[2] 

机构地区：[1]山东商业职业技术学院,山东济南250103 [2]北京理工大学材料学院,北京100081

出　　处：《热加工工艺》2016年第9期194-197,共4页Hot Working Technology

基　　金：国家自然科学基金(60273041)

摘　　要：基于ANSYS大型有限元分析软件,对3 mm厚的SUS430钢激光焊接温度场进行了模拟,对焊缝的形状、焊接各阶段温度场以及焊缝附近各点焊接热循环规律进行了分析。结果表明,焊缝形状模拟结果与试验结果吻合较好,建立的模型可用于SUS430钢激光焊接温度场模拟研究;当焊接过程稳定后,随着时间变化熔池逐渐向前推移,熔池附近各点温度基本恒定,熔池形状基本保持不变,呈现出准稳态温度场的特征;焊缝中心及离焊缝中心外5 mm处各点时间温度历程规律基本一致,只是峰值温度出现的时间不同,垂直于焊缝方向上各点峰值温度出现时间一致,距焊缝中心越近,峰值温度越高,温度下降梯度越大。Based on ANSYS finite element analysis software, the laser welding temperature field of SUS430 steel with 3 mm thickness was simulated. The shape of weld, welding temperature field of welding at different time periods and the welding thermal cycle rule of different points near weld seam were analyzed. The results show that the simulated weld morphology is in good agreement with the experimental result. The established model can be used to study the temperature field simulation of SUS430 steel laser welding. When the welding process is stable, the weld pool gradually progresses along with the time changing. The temperature at the point near the molten pool keeps constant, and the molten pool shape remains unchanged, which shows a feature of quasi steady state temperature field. The time-temperature history law of the points at weld center and 5 mm away from the weld center are basically the same, but the peak temperature occurs at different time.The temperature peak of the point of perpendicular to the weld direction appears at the same time. The closer from the weld center is, and the higher the peak temperature is, the greater the temperature gradient decreases.

关 键 词：计算机仿真 SUS430钢 激光焊 温度场 

分 类 号：TG456.7[金属学及工艺—焊接]