摘要
用Deform-3D软件建立了搅拌摩擦焊三维热-力耦合模型,模拟焊接过程中搅拌头温度和应力场的分布状态.结果表明,温度和应力场受搅拌头结构影响显著,搅拌针锥度减小、根部和端部直径减小,摩擦阻力和摩擦产生的热量减小,导致搅拌头的温度和应力场随之减小;搅拌针三平面切面深度增大,导致搅拌头的温度和应力场也相应增加,其中处于搅拌针前进侧的等效应力显著提高.
This study used Deform-3Dsoftware established three-dimensional FSW heat-mechanical model to simulate the temperature distribution and stress field in the head of the pin.The results showed that the temperature and stress field were significantly affected by the pin structure,heat generated by friction reduced due to reducing the stirring pin taper,root and ends a reduced diameter,which also resulting in reduced stress and temperature field on the tool.Stirring pin triplane section depth increases with increasing in temperature and stress of the tool,which is in the advance side of the stirring pin equivalent stress improved significantly.
出处
《材料研究与应用》
CAS
2016年第2期88-92,共5页
Materials Research and Application
基金
广东省科技厅应用型科技研发专项(2015B090922011)
广东省引进创新科研团队计划项目(201101C0104901263)
关键词
搅拌摩擦焊
搅拌头
数值模拟
温度场
应力场
friction stir welding
tool
numerical simulation
temperature field
stress field
