Paper Title:
Simulation and Optimization of U-Bending Springback Using Genetic Algorithms
  Abstract

Springback during unloading affects the dimensional accuracy of sheet metal parts. This paper proposes a finite element model to predict springback with contact evolution between the sheet and dies. The underlying formulation is based on updated Lagrangian elastoplastic materials model. The solutions validated with experimental data of NUMISHEET’93 show more accurately. The effects of the variable blank holding force (VBHF) on springback results are investigated based on genetic algorithms (GAs) for the determination of the parameters in blank holding operations. It has been found that the GAs based optimization technique is very effective in solving this kind of problem. The difficulty of choosing correct starting values for the constants in the traditional optimization techniques has been completely overcome and the GAs technique provides a better chance to converge to the global minimum.

  Info
Periodical
Edited by
Liang Gao
Pages
17-22
DOI
10.4028/www.scientific.net/AMM.69.17
Citation
L. Chen, "Simulation and Optimization of U-Bending Springback Using Genetic Algorithms", Applied Mechanics and Materials, Vol. 69, pp. 17-22, 2011
Online since
July 2011
Authors
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: H. Ali Hatipoğlu, Naki Polat, Arif Koksal, A. Erman Tekkaya
Abstract:In this paper, the flexforming process is modeled by finite element method in order to investigate the operation window of the problem....
469
Authors: Xia Jin, Shi Hong Lu
Abstract:Bending of the aluminum alloy is one of the processes frequently applied during manufacture of aircraft sheet metal. The bending operation...
487
Authors: Mei Ling Guo, Xin Yun Wang, Jian Cheng Luo, Ju Chen Xia
Abstract:Springback in drawing of an axial symmetry sheet metal part was studied. First of all, according to a springback formula of simple bending,...
264
Authors: Zhi Feng Liu, Qi Zhang, Wen Tong Yang, Jian Hua Wang, Yong Sheng Zhao
Abstract:According to the characteristic which is more and difficult to determine about the automotive panel forming factors, based on the dynamic...
232
Authors: Guang Kai Wang, Si Yuan Cheng, Su Yang Li, Xiang Wei Zhang
Materials Forming
Abstract:Due to the recent development both in the numerical simulation technology and computer technology, the role of numerical simulation in sheet...
579