基于LS-DYNA的不锈钢车顶弯梁拉弯仿真
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摘要
采用LS-DYNA软件对某帽型不锈钢车顶弯梁零件位移控制模式下的拉弯成形进行模拟分析,有效预测了拉弯过程中可能存在的成形缺陷,如截面畸变、中间段弓起、回弹,并提出了相应的解决方案,为该车顶弯梁的精确拉弯成形提供指导。
Stretch bending is a complex forming process because of multi-factor coupling interaction,such as part size,section shape and dimensions,material properties and forming process parameters,and the quality of forming part is difficult to be controlled.Numerical simulation of displacement-controlled stretch bending of a hat-typed stainless-steel roof curve beam was carried out by using LS-DYNA.The simulation shows that some forming defects(section distortion,arching in the middle section,springback,etc.)may exist in the stretch bending,and the corresponding solutions were put forward,which provides guidance for precise bending of the part in the future actual production.
Stretch bending is a complex forming process because of multi-factor coupling interaction,such as part size,section shape and dimensions,material properties and forming process parameters,and the quality of forming part is difficult to be controlled.Numerical simulation of displacement-controlled stretch bending of a hat-typed stainless-steel roof curve beam was carried out by using LS-DYNA.The simulation shows that some forming defects(section distortion,arching in the middle section,springback,etc.)may exist in the stretch bending,and the corresponding solutions were put forward,which provides guidance for precise bending of the part in the future actual production.
引文
[1]王锋,谷诤巍,刘玉梅等.轨道车辆不锈钢车顶弯梁拉弯成形技术[J].机车车辆工艺,2007.(1):10-12
[2]F Pausen,T Welo.Application of numerical simulation in the bending of aluminum alloy profiles[J].Journal of Materials Processing Technology,1996.58(2-3):274-285
[3]A H Clausen,O S Hopperstad,M Langseth.Sensitivity of Model parameters in stretch-bending of aluminium extrusions[J].International Journal of Mechanical Sciences.2001.43(2):427-453
[4]A H Clausen,O S Hopperstad,M Langseth.Stretch bending of aluminium extrusions for car bumpers[J].Journal of Materials Processing Technology,2000.102(1-3):241-248
[5]O S Hopperstad,B J Leira,S Remseth.Reliabilitybased analysis of a stretch-bending process for aluminum extrusions[J].Computers and Structures,1999.71(1):63-75
[6]O S Hopperstad,T Berstad,H Ilstad,et al.Effects of the yield criterion on local deformations in numerical simulation of profile forming[J].Journal of Materials Processing Technology,1998.(80-81):551-555
[7]金朝海,周贤宾,刁可山等.铝合金矩形管拉弯成形过程的数值模拟[J].材料科学与工艺,2004.12(6):572-575
[8]金朝海,周贤宾,刁可山等.型材2D拉弯数值模拟建模技术研究[J].塑性工程学报,2005.12(2):24-28
[9]金朝海,谷诤巍,赵亚等夫.基于数控代码的2D型材拉弯夹钳运动轨迹确定及有限元仿真[J].中国机械工程,2008.19(17):2069-2073
[10]李小强,周贤宾,金朝海等.型材拉弯数值模拟夹钳边界条件的一种等效模型[J].塑性工程学报,2009.16(1):64-69
[11]金春凤.型材拉弯成形及回弹分析[D].成都:西华大学,2009
[12]马晓安.典型型材拉弯理论分析与实验研究[D].秦皇岛:燕山大学,2013
[13]张琨.大曲率型材拉弯成形过程的数值模拟[D].长春:吉林大学,2013
[14]万加华.带下陷拉弯成形工艺与数值模拟研究[D].西安:西北工业大学,2005
[15]金朝海,周贤宾,谷诤巍等.基于位移控制的型材2D张臂式拉弯加载轨迹设计及数控代码生成[J].塑性工程学报,2009.16(2):66-71
[2]F Pausen,T Welo.Application of numerical simulation in the bending of aluminum alloy profiles[J].Journal of Materials Processing Technology,1996.58(2-3):274-285
[3]A H Clausen,O S Hopperstad,M Langseth.Sensitivity of Model parameters in stretch-bending of aluminium extrusions[J].International Journal of Mechanical Sciences.2001.43(2):427-453
[4]A H Clausen,O S Hopperstad,M Langseth.Stretch bending of aluminium extrusions for car bumpers[J].Journal of Materials Processing Technology,2000.102(1-3):241-248
[5]O S Hopperstad,B J Leira,S Remseth.Reliabilitybased analysis of a stretch-bending process for aluminum extrusions[J].Computers and Structures,1999.71(1):63-75
[6]O S Hopperstad,T Berstad,H Ilstad,et al.Effects of the yield criterion on local deformations in numerical simulation of profile forming[J].Journal of Materials Processing Technology,1998.(80-81):551-555
[7]金朝海,周贤宾,刁可山等.铝合金矩形管拉弯成形过程的数值模拟[J].材料科学与工艺,2004.12(6):572-575
[8]金朝海,周贤宾,刁可山等.型材2D拉弯数值模拟建模技术研究[J].塑性工程学报,2005.12(2):24-28
[9]金朝海,谷诤巍,赵亚等夫.基于数控代码的2D型材拉弯夹钳运动轨迹确定及有限元仿真[J].中国机械工程,2008.19(17):2069-2073
[10]李小强,周贤宾,金朝海等.型材拉弯数值模拟夹钳边界条件的一种等效模型[J].塑性工程学报,2009.16(1):64-69
[11]金春凤.型材拉弯成形及回弹分析[D].成都:西华大学,2009
[12]马晓安.典型型材拉弯理论分析与实验研究[D].秦皇岛:燕山大学,2013
[13]张琨.大曲率型材拉弯成形过程的数值模拟[D].长春:吉林大学,2013
[14]万加华.带下陷拉弯成形工艺与数值模拟研究[D].西安:西北工业大学,2005
[15]金朝海,周贤宾,谷诤巍等.基于位移控制的型材2D张臂式拉弯加载轨迹设计及数控代码生成[J].塑性工程学报,2009.16(2):66-71