Numerical analysis on the elastic deformation of the tools in sheet metal forming processes

被引：18

作者：

Neto, D. M. ^{[1
]}

Coer, J. ^{[1
,2
]}

Oliveira, M. C. ^{[1
]}

Alves, J. L. ^{[3
]}

Manach, P. Y. ^{[2
]}

Menezes, L. F. ^{[1
]}

机构：

[1] Univ Coimbra, Dept Mech Engn, CEMUC, Polo 2,Rua Luis Reis Santos, P-3030788 Coimbra, Portugal

[2] Univ Bretagne Sud, FRE CNRS 3744, IRDL, F-56100 Lorient, France

[3] Univ Minho, CMEMS, Microelectromech Syst Res Unit, Campus Azurem, P-4800058 Guimaraes, Portugal

来源：

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES | 2016年 / 100卷

关键词：

Reverse deep drawing; Tools deformation; Finite element analysis; Material flow; DD3IMP; FRICTIONAL CONTACT PROBLEMS; DEEP-DRAWING PROCESS; SOLID FINITE-ELEMENTS; DIE DEFORMATION; NAGATA PATCHES; BLANK HOLDER; SIMULATION; FORMULATION; PREDICTION; SPRINGBACK;

D O I：

10.1016/j.ijsolstr.2016.08.023

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The forming tools are commonly assumed as rigid in the finite element simulation of sheet metal forming processes. This assumption allows to simplify the numerical model and, subsequently, reduce the required computational cost. Nevertheless, the elastic deformation of the tools can influence considerably the material flow, specifically the distribution of the blank-holder pressure over the flange area. This study presents the finite element analysis of the reverse deep drawing of a cylindrical cup, where the forming tools are modelled either as rigid or as deformable bodies. Additionally, the numerical results are compared with the experimental ones, in order to assess the accuracy of the proposed finite element model. Considering the elastic deformation of the tools, the numerical results are in better agreement with the experimental measurements, namely the cup wall thickness distribution. On the other hand, the computational time of the simulation increases significantly in comparison with the classical approach (rigid tools). (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：270 / 285

页数：16

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