个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:船舶工程学院
学科:船舶与海洋结构物设计制造
办公地点:综合试验2#楼403室
联系方式:0411-84706352
电子邮箱:yjliu@dlut.edu.cn
碳钢与304不锈钢焊接残余应力的计算
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发表时间:2022-10-06
发表刊物:焊接学报
所属单位:运载工程与力学学部
期号:1
页面范围:93-95
ISSN号:0253-360X
摘要:Elasto-plastic finite element method is used for simulating the welding temperature field and the residual stress in butt-welded Q235 and 304 stainless steel. The results indicate that differences between their physics property caused the inhomogeneous distribution of the welding temperature field and the residual stress. And the peaks of the residual stress show on 304 stainless steel side, and the peak value is slightly less than the yield strength of 304 stainless steel. When the heat source was moved towards Q235, the peak value had small changes, but the high-stress and the welding distortion were decreased. On the contrary, when the heat source was moved towards 304 stainless steel, the high-stress area would be expanded with higher welding heat, and the peak value of the residual stress was slightly decreased. An infrared thermal imager was also applied to measure surface temperature changing of welding materials in welding process, the results are in accordant with that drawn from elasto-plastic finite element simulation.
备注:新增回溯数据