|
摘要：
|
|
以聚碳酸酯作为模型材料,采用三维光塑性实验方法对楔横轧金属变形工步进行了模拟研究。对典型截面切片的等差线和等倾线条纹进行了观测分析,采用牛顿迭代法求解了楔横轧制件内部的三维应变分布。计算结果说明,楔横轧变形区属于复杂的三维变形,轧件的变形是不均匀的,表层变形大,心部变形小,变形的不均匀将导致轧件内部产生附加应力。实验结果表明,利用三维光塑性方法对楔横轧成形进行实验模拟是成功的,为研究金属塑性成形工艺提供了一种有效的实验手段。
|
|
Using polycarbonate as mold material,three-dimensional photoplasticity was employed to simulate the deformation of the metal in the cross wedge rolling process.The fringes of isochromatic line and isoclinal line of slice in typical section were observed and analysed.The three-dimensional strain distributions in the inner part of cross wedge rolling was solved by Newton iterative method.It shows that the deformation distributions on cross wedge rolling are complicated three-dimensional deformation through the solved result.The deformation on part is not even.The inner deformation is large and the outer deformation is little.The asymmetric deformation will lead to the additional stress in the inner of transmutative part.Experiment results indicate that the simulation method of three-dimensional photoplasticity on cross wedge rolling is successful and it provides an effective experiment means for studying the technology of metal forming.
|
|
基金项目：
|
|
|
|
作者简介：
|
|
|
|
参考文献：
|
[1]胡正寰,张康生,王宝雨,等.楔横轧理论与应用[M].北京:冶金工业出版社,1996.
[2]熊毅,傅万堂,孙淑华,等.高碳钢棒件温楔横轧成形过程的有限元数值模拟[J].塑性工程学报,2006,13(5):36-40.
[3]何涛,王宝雨,胡正寰.偏心圆截面轴类零件的楔横轧成形数值模拟[J].锻压技术,2008,33(1):53-55.
[4]赵静,鲁力群,胡正寰.汽车半轴楔横轧多楔成形力能参数数值模拟与实验[J].农业机械学报,2008,39(6):184-188.
[5]闫华军,刘晋平,樊旭平,等.楔横轧轧制螺纹轴应力状态研究[J].锻压技术,2008,33(3):60-63.
[6]胡福生,王宝雨,胡正寰.凸轮轴楔横轧成形仿真与应力应变分析[J].锻压技术,2009,34(1):65-67.
[7]朱明海,范琳.现代光塑性[M].北京:国防工业出版社,1995.
[8]马振海.楔横轧基本轧制过程的数值模拟及轧件端面变形研究[D].北京:北京科技大学,2002.
|
|
服务与反馈：
|
|
【文章下载】【加入收藏】
|
|
|
|
