乘用车侧围点焊热变形分析
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摘要
基于电阻点焊热传导理论及热弹塑性理论,建立乘用车侧围点焊热应力场模型.采用有限元分析法求解该热应力场模型,在预先求解点焊瞬态温度场后,将其作为节点温度载荷施加于侧围几何模型上,最终获取其热应力、热变形的分布规律,为乘用车侧围乃至车身在焊接后更好地满足精度要求提供了相应的理论依据和技术基础.
Based on the theory of resistive spot welding and thermo-elastic-plasticity,the thermal stress field model of side-wall welding of passenger car was established.The finite element method was used to solve the transient temperature field,loaded on the geometrical model as a node temperature,and the distribution of thermal stress and thermal deformation were obtained.The side wall of passenger car and body meets the accuracy requirements better after welding,which provides an appropriate theoretical and technical basis for the automotive engnineering.
Based on the theory of resistive spot welding and thermo-elastic-plasticity,the thermal stress field model of side-wall welding of passenger car was established.The finite element method was used to solve the transient temperature field,loaded on the geometrical model as a node temperature,and the distribution of thermal stress and thermal deformation were obtained.The side wall of passenger car and body meets the accuracy requirements better after welding,which provides an appropriate theoretical and technical basis for the automotive engnineering.
引文
[1]李朝龙.0.8mm低碳钢汽车门框焊装夹具设计及点焊工艺数值模拟[D].天津:天津理工大学,2015.
[2]H A NIED.The finite element modeling of the resistance spot welding process[J].Welding Journal,1984,63(4):123-132.
[3]H MURAKAWA,H KIMURA,Y UEDA.Weldability analysis of spot welding on aluminum using FEM[J].Trans.JWRI,1995,24(1):101-111.
[4]林忠钦,胡敏,来新民,等.轿车白车身点焊装配过程有限元分析[J].焊装学报,2001,22(1):36-40.
[5]李广勇,刘渝,颜书毅,等.ANSYS二次开发在汽车覆盖件焊装偏差分析中的应用[J].汽车制造技术,2011(1):141-143.
[6]胡敏,来新民,陈关龙,等.轿车车身点焊装配偏差分析模型的建立与研究[J].焊装技术,2000,29(4):1-3.
[7]丁鹏飞.超高强度汽车钢板电阻点焊结构强度的优化分析[D].上海:华东理工大学,2016.
[8]马征.不锈钢点焊温度场及分流对其影响的数值模拟研究[D].长春:吉林大学,2015.
[9]张彦华.焊接力学与结构完整性原理[M].北京:北京航空航天大学出版社,2007.
[10]黄志新,刘成柱.ANSYS Workbench 14.0超级学习手册[M].北京:人民邮电出版社,2013.
[11]李金阁.Q345/2Cr13钢异种材料焊接过程有限元法分析[D].重庆:重庆大学,2012.
[12]X SUN.Modeling of projection welding processes using coupled finite element analyses[J].Welding Journal,2000,79(9):244-251.
[13]游敏,郑小玲,余海洲.关于焊接残余应力形成机制的探讨[J].焊接学报,2003,24(2):51-54,58.
[2]H A NIED.The finite element modeling of the resistance spot welding process[J].Welding Journal,1984,63(4):123-132.
[3]H MURAKAWA,H KIMURA,Y UEDA.Weldability analysis of spot welding on aluminum using FEM[J].Trans.JWRI,1995,24(1):101-111.
[4]林忠钦,胡敏,来新民,等.轿车白车身点焊装配过程有限元分析[J].焊装学报,2001,22(1):36-40.
[5]李广勇,刘渝,颜书毅,等.ANSYS二次开发在汽车覆盖件焊装偏差分析中的应用[J].汽车制造技术,2011(1):141-143.
[6]胡敏,来新民,陈关龙,等.轿车车身点焊装配偏差分析模型的建立与研究[J].焊装技术,2000,29(4):1-3.
[7]丁鹏飞.超高强度汽车钢板电阻点焊结构强度的优化分析[D].上海:华东理工大学,2016.
[8]马征.不锈钢点焊温度场及分流对其影响的数值模拟研究[D].长春:吉林大学,2015.
[9]张彦华.焊接力学与结构完整性原理[M].北京:北京航空航天大学出版社,2007.
[10]黄志新,刘成柱.ANSYS Workbench 14.0超级学习手册[M].北京:人民邮电出版社,2013.
[11]李金阁.Q345/2Cr13钢异种材料焊接过程有限元法分析[D].重庆:重庆大学,2012.
[12]X SUN.Modeling of projection welding processes using coupled finite element analyses[J].Welding Journal,2000,79(9):244-251.
[13]游敏,郑小玲,余海洲.关于焊接残余应力形成机制的探讨[J].焊接学报,2003,24(2):51-54,58.