薄板焊接变形分析  

Analysis on Welding Deformation of Sheet

作　　者：宋娓娓[1] 汪建利[1] 汪洪峰[1,2] 

机构地区：[1]黄山学院机电与信息工程学院.安徽黄山245041 [2]南京航空航天大学机电学院,江苏南京210016

出　　处：《热加工工艺》2013年第15期164-166,169,共4页Hot Working Technology

基　　金：国家自然科学基金项目(51175255);江苏省博士后基金项目(1201007C);安徽省高校省级自然科学基金项目(KJ2012Z388);黄山学院人才启动基金项目(2012xkjq003);安徽省高等学校省级优秀青年人才基金项目(2011SQR C077)

摘　　要：通过建立的薄板焊接有限元模型,对薄板结构件焊接变形进行有限元模拟,并对获得的薄板焊接温度场分布、应力场分布和变形规律进行了分析。结果显示,在整个焊接过程中,焊接薄板的平均温度在逐渐升高,直至准稳态状态;焊缝区域产生了拉应力,焊缝区域周边的母材金属则产生压应力,远离焊缝区域其残余应力较小;焊接变形成"马鞍"型。The sheet structural welding deformation was simulated. The accuracy of the finite element was verified by the comparison between the finite element simulation results and the experimental results. The obtained temperature field distribution, the distribution of stress field and deformation law of the sheet metal welding were analyzed by finite element model of the establishment of sheet metal welding. The results show that the average temperature throughout the welding process gradually increases until the quasi-steady-state state. A tensile stress appears in welding region. The compressive stress appears in the around of base metal, and away from the weld region, the residual stress is small. The welding deformation is a ＂saddle＂.

关 键 词：焊接 残余应力 变形 锰钢 有限元分析 

分 类 号：TG404[金属学及工艺—焊接]