摘要
本文主要研究典型结构钢材料S355作为焊接母材时,在不同预热温度条件下L型焊接接头的温度场、应力场、应变场以及焊缝区的微观组织变化。使用Simufact.welding软件进行焊接过程的数值模拟,采用更为符合电弧焊实际情况的双椭球热源模型。研究结果给出了预热温度对L型焊接接头温度场、应力场和应变场的影响,显示了材料S355在焊接冷却过程中的贝氏体相变对焊缝区应力场变化的影响。
The temperature,stress,strain fields and the change of microstructure of the L type welded joint at different preheating temperatures were studied taking typical structural steel S355 as base metal.The welding process was simulated by Simufact.welding software.The double-ellipsoidal heat source model which was more suitable for arc welding simulation was adopted.The influence of preheat temperature on the fields of temperature,stress and strain of the welded joint was given,and the effect of bainite transformation during welding cooling process on the stress field in the weld zone of S355 material was shown.
作者
宋晓辉
李楠楠
周明阳
马利伟
姚鹏
邢军伟
刘国宁
SONG Xiaohui;LI Nannan;ZHOU Mingyang;MA Liwei;YAO Peng;XING Junwei;LIU Guoning(School of Mechanical Engineering,Zhengzhou University,Zhengzhou 450001,China;Industrial IOT Institute,Zhengzhou University,Zhengzhou 450000,China)
出处
《热加工工艺》
北大核心
2019年第9期198-203,共6页
Hot Working Technology
基金
河南省高等学校重点科研项目(16A460011)
国家智能制造综合标准化与新模式应用项目资助(2017ZNZX02
2017WDZD03
2017MSKZD02)
关键词
数值分析
L型接头
预热温度
贝氏体相变
numerical analysis
L type welded joints
preheating temperature
bainite transformation
