|
摘要：
|
|
设置拉延筋是板料拉深成形过程中控制材料流动的有效方法。在板料成形数值模拟中 ,为节省计算时间 ,常采用等效拉延筋模型。本文在参考国内外有关资料的基础上 ,建立了一种等效拉延筋模型。模型中考虑了拉延筋约束力、塑性厚向应变以及垂直于压料面的约束保持力的影响 ,并在程序中予以实现。文中给出了一个计算实例
|
|
Drawbead application is an effect method in sheet metal deep\|drawing process to control material flow In sheet metal numerical simulation,equivalent drawbead model is usually used to save CPU\|time In this paper,an equivalent drawbead model is established according to some domestic and foreign literatures Effects of drawbead restraining force,plastic thickness strain,and drawbead lift force are considered in the model and all of these are implemented in our FEM code A simulation example is given in paper
|
|
基金项目：
|
|
国家“8 6 3”目标产品项目
|
|
作者简介：
|
|
|
|
参考文献：
|
1 蒋镜昱 ,印雄飞 .板料成形过程的数值模拟 .模具技术 ,1998(4) .
2 Wang N M,Shah V C.Drawbead design andperformance.J.Material Shaping Tech.1991(9) :2 1～ 2 6
3 Wouters P,Montrort G,Defourny J.Numerical simulation andexperimental evaluation of the modification of material propertiesin a drawbead.Recent developments in sheet metal formingtechnology.edited by M.J.M.Barata Marques,Lisborn,1994:389～ 40 1
4 Chabrand P,Dubis F,Gelin J C.Modeling Drawbeads in sheetmetal forming.Int.J.Mech.Sci.1996 ,38(1) :5 9～ 77
5 Dynamic Software.Optris User's Guide,version5 .0 ,1996 .
6 Sunaga H,Yoneda K,Makinuchi A.Finite element modeling ofdrawbead in sheet metal forming.NUMISHEET'96 :186～ 190
7 Carleer B D,Meinders T,Huetink J.Equivalentdrawbead model infinite elementsimulation.NUMISHEET'96 :2 5～ 31
8 T Meinders,B D Carleer,H J M Geijselaers,J Huetink.Theimplementation of an equivalent drawbead model in a finite-element code for sheet metal forming.J.Mat.Processing Tech.83(1998) :2 34～ 2 44
9 Changman Kim,Naksoo Kim,Youngseok Im,Daegyo Seo.Finiteelement analysis and experimental verification fordrawbead.NUMIFORM'95 :741～ 747
10 Fuh-Kuo Chen ,Pao-Chinge.An analysis of drawbead restrainingforce in the stamping process.Int.J.Mach.Tools & Manu.38(1998) :82 7～ 842
11 B D Carleer,M F M Lo S,JHuetink.Modeling drawbeads in3Dfinite element simulations of the deep drawing process,NUMIFORM'95 :6 81～ 6 85
|
|
服务与反馈：
|
|
【文章下载】【加入收藏】
|
|
|
|
