基于ABAQUS的MAG焊接温度场数值模拟与热循环分析

doi:10.16180/j.cnki.issn1007-7820.2022.09.011

摘要/Abstract

摘要：

为了控制MAG焊接的生产成本,给MAG焊接过程提供精确的技术支持,文中采用有限元软件来模拟计算焊接的过程。基于ABAQUS有限元分析软件,对8 mm厚Q235的MAG温度场进行了数值模拟计算,模拟焊接热源的加载过程,并对各阶段的温度场以及垂直和平行于焊缝附近各点的焊接热循环规律进行了分析。通过模拟计算焊接板材的热学性能可知,温度场呈现为稳态特征,焊接热循环稳定,远离焊缝距离的峰值温度出现时间略有延迟,且温度下降梯度随之减小,数值模拟结果与焊接温度场的实际变化情况吻合良好。

关键词: 焊接温度场, 热循环, ABAQUS模拟, MAG焊, Q235钢, 温度场, 焊接热源, 热物理性能

Abstract:

In order to control the production cost of MAG welding and provide accurate technical support for MAG welding process, finite element software is used to simulate the welding process. Based on ABAQUS finite element analysis software, the temperature field of 8 mm-thick Q235 MAG is numerically simulated, the loading process of welding heat source is simulated, and the temperature field of each stage and the welding thermal cycle law of vertical and parallel points near the weld are analyzed. The results show that the temperature field is steady, the welding thermal cycle is stable, the peak temperature time away from the weld is slightly delayed, and the temperature gradient decreases. The numerical simulation results are in good agreement with the actual changes of the welding temperature field.

Key words: welding temperature field, thermal cycle, ABAQUS simulation, MAG welding, Q235 steel, temperature field, welding heat source, thermophysical properties

中图分类号:

TN948.64

明灿,马春伟. 基于ABAQUS的MAG焊接温度场数值模拟与热循环分析[J]. 电子科技, 2022, 35(9): 74-78.

MING Can,MA Chunwei. Numerical Simulation and Thermal Cycle Analysis of MAG Welding Temperature Field Based on ABAQUS[J]. Electronic Science and Technology, 2022, 35(9): 74-78.

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