【作者】 陈小芳； 扶名福； 袁志军；

【Author】 ~*CHEN Xiao-fang~1,FU Ming - fu~2,YUAN Zhi-jun~2 (1.School of Mechanical and Electronic Engineering,Nanchang University,Nanchang 330031,China 2.School of Civil Engineering and Architecture,Nanchang University,Nanchang 330031,China)

【机构】 南昌大学机电工程学院； 南昌大学建筑工程学院；

【摘要】 板料在拉深成形过程中经常出现起皱、拉裂等缺陷。本文运用显式动力有限元模拟软件ANSYS/LS-DYNA对半球面形件进行了拉深过程模拟。分析了凹模圆角半径、摩擦系数对拉延过程的影响,模拟了它们在不同工艺参数下的拉深过程,并从中分析出最佳的工艺参数。本文的研究方法和结果可为实际工艺的设计和生产提供一定的参考和依据。更多还原

【Abstract】 In the process of forming,the sheet often appears crinkle and rip.In this paper,the forming process of drawing of hemisphere-shaped workpiece is numerically simulated and analyzed by using the dynamic explicit simulation software ANSYS/LS-DYNA.Analyzing the effect of technological parameters(such as the die shoulder radius,friction coefficient) on the draw forming process,then the plastic deformation process is simulated with different parameter and the selection of the optimal processing parameter is carried out.The distribution and variation of stress,strain and thickness of sheet at the end of deformation are analyzed.It is shown that the method and results in the paper are useful for the design and production in practice.更多还原