SS400钢焊接温度场数值模拟与试验验证
贺鸿臻 麻永林 陈重毅 陆恒昌
（内蒙古科技大学材料与冶金学院，内蒙古 包头市014010）
关键词: 超细晶粒钢；焊接；有限元分析；温度场
摘 要:为了得到SS400超细晶钢焊接温度场分布规律，采用ANSYS有限元分析软件，对SS400钢焊接温度场进行模拟计算，利用体生热率及生死单元技术来实现热源的移动和焊缝的生成，得到了一定焊接工艺下的焊接温度场分布规律。为了验证模拟计算结果的准确性，进行了8mm厚SS400钢的平板对接焊试验，对焊接温度场进行了测定。对比结果发现，模拟计算的温度场与试验的温度场变化规律基本相同。利用ANSYS分析焊缝及热影响区的热循环曲线是可行的。
Numerical simulation and experimental investigation of welding temperature field of ss400 plates
HE Hong-zhen, MA Yong-lin, CHEN Zhong-yi, LU Heng-chang
（Materials and Metallurgy School, Inner Mongolia University of Science and Technology, Baotou 014010, China）
Key words: ultra fine grained steel; welding; finite element analysis; temperature file
Abstract: The simulation of the welding temperature field of the SS400 ultra fine grain steel was carried out using ANSYS finite element analysis software in order to get the welding temperature distribution of SS400 steel. The moving heat source and weld joint were realized by means of heat generation rate and element birth and death technology. The regular distribution pattern of the welding temperature field under a certain process was obtained. In order to verify the simulation accuracy, the test of 8mm thick SS400 steel butt welding was taken, and the welding temperature field were determined. Comparing the temperature distribution, the calculated values are basically the same as those of the temperature field test. Using ANSYS to analyze weld joint and thermal cycle curve of the heat affected zone is feasible.