contributor author | K. M. Zhao | |
contributor author | J. K. Lee | |
date accessioned | 2017-05-09T00:04:59Z | |
date available | 2017-05-09T00:04:59Z | |
date copyright | October, 2001 | |
date issued | 2001 | |
identifier issn | 0094-4289 | |
identifier other | JEMTA8-27024#391_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/125269 | |
description abstract | The main objective of this paper is to obtain the first few stress-strain loops of sheet metals from reverse loading so that the springback can be simulated accurately. Material parameters are identified by an inverse method within a selected constitutive model that represents the hardening behavior of materials subjected to a cyclic loading. Three-point bending tests are conducted on sheet steels (mild steel and high strength steel). Punch stroke, punch load, bending strain, and bending angle are measured directly during the tests. Bending moments are then computed from these measured data. Bending moments are also calculated based on a constitutive model. Normal anisotropy and nonlinear isotropic/kinematic hardening are considered. Material parameters are identified by minimizing the normalized error between two bending moments. Micro-genetic algorithm is used in the optimization procedure. Stress-strain curves are generated with the material parameters found in this way, which can be used with other plastic models. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Generation of Cyclic Stress-Strain Curves for Sheet Metals | |
type | Journal Paper | |
journal volume | 123 | |
journal issue | 4 | |
journal title | Journal of Engineering Materials and Technology | |
identifier doi | 10.1115/1.1395021 | |
journal fristpage | 391 | |
journal lastpage | 397 | |
identifier eissn | 1528-8889 | |
keywords | Sheet metal | |
keywords | Stress | |
keywords | Hardening | |
keywords | Stress-strain curves | |
keywords | Optimization | |
keywords | Anisotropy AND Constitutive equations | |
tree | Journal of Engineering Materials and Technology:;2001:;volume( 123 ):;issue: 004 | |
contenttype | Fulltext | |