A numerical method for rapid estimation of drawbead restraining force based on non-linear, anisotropic constitutive equations

被引：7

作者：

Lee, M. G. ^{[4
]}

Chung, K. ^{[3
]}

Wagoner, R. H. ^{[2
]}

Keurn, Y. T. ^{[1
]}

机构：

[1] Hanyang Univ, Div Mech Engn, Seoul 133791, South Korea

[2] Ohio State Univ, Dept Mat Sci & Engn, Columbus, OH 43210 USA

[3] Seoul Natl Univ, ITRC, Sch Mat Sci & Engn, Seoul 151742, South Korea

[4] Korea Inst Machinery & Mat, Ferrous Alloy Res Grp, Kyungnam 641010, South Korea

来源：

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES | 2008年 / 45卷 / 11-12期

基金：

美国国家科学基金会;

关键词：

drawbead; DBRF; hybrid method; Bauschinger effect; isotropic-kinematic hardening law; anisotropic yield function;

D O I：

10.1016/j.ijsolstr.2008.02.008

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Numerical procedures to predict drawbead restraining forces (DBRF) were developed based on the semi-analytical (non-finite-element) hybrid membrane/bending method. The section forces were derived by equating the work to pull sheet material through the drawbead to the work required to bend and unbend the sheet along with frictional forces on drawbead radii. As a semi-analytical method, the new approach was especially useful to analyze the effects of various constitutive parameters with less computational cost. The present model could accommodate general non-quadratic anisotropic yield function and non-linear anisotropic hardening under the plane strain condition. Several numerical sensitivity analyses for examining the effects of process parameters and material properties including the Bauschinger effect and the shape of yield surface on DBRF were presented. Finally, the DBRFs of SPCC steel sheet passing a single circular drawbead were predicted and compared with the measurements. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：3375 / 3391

页数：17