|
Abstract：
|
|
Based on the rigid visco plastic FEM technique, this paper numerically simulate the superplastic bulging process of void sensitive materials using pressure controlling strategy of maintaining maximum effective strain rate constant and void damage evolution model of superplastic forming. By examples of free bulging of hemisphere and die bulging of cylinder parts, the optimum pressure cycles are calculated respectively, and the thickness distribution and void volume damage status are also demonstrated. The analysis results are helpful to the process planning in actual superplatic bulging processes.
|
|
Funds：
|
|
|
|
AuthorIntro：
|
|
|
|
Reference：
|
1 吴诗 .金属超塑性变形理论 .北京 :国防工业出版社 ,1 997.
2 Sukhomlinov L G,Engelsberg V K,Davydov V N.A FiniteElement Mem brane Model for the Analysis of Axisymmetric SheetMetal Forming Processes.Int JMech Sci,1 992 ,3 4 ( 3 ) :1 79～ 1 93
3 Park J J,Oh S I,Altan T. Analysis of Axisymm etric SheetForming Processes by Rigid-Viscoplastic Finite Element Method.JEng Ind Trans ASME,1 987,1 0 9:3 4 7～ 3 54
4 Yong H K,Hong S S,Lee J S.Finite Element Analysis ofSuperplastic Form ing Process.Advanced Technology of PlasticityITCP 93 ,Beijing,1 993 :1 953～ 1 958
5 Zhou D,Lian J.Numerical Analysis of Superplastic Bulging forCavity-sensitive Materials.Int JMech Sci,1 987,2 9( 8) :565～ 576
6 杜志孝 ,李淼泉 ,刘马宝 ,吴诗 .超塑性板料的成形极限 .应用数学和力学 ,1 996,1 7( 2 ) :1 2 7～ 1 3 2
7 Du Zhixiao,Wu Shichun.A Kinetic Equation for Damage duringSuperplastic Deformation J Mater Proc Tech,1 995,52 ( 2 -4 ) :2 70～ 2 79
8 李圆春 .变形 -损伤耦合的超塑性胀形过程有限元模拟 .西北工业大学博士学位论文 .1 996.
|
|
Service：
|
|
【This site has not yet opened Download Service】【Add
Favorite】
|
|
|
|
Copyright Forging & Stamping Technology.All rights reserved