Paper Title:
Determination of the Constants of Zerilli-Armstrong Constitutive Relation Using Genetic Algorithm
  Abstract

Identification of the constants of material models is always a concern. In the present work, a combined experimental, numerical and optimization technique is employed to determine the constants of Zerilli-Armstrong model. The experiments are conducted on a compressive Hopkinson bar, the simulations are performed using finite element method and optimization is carried out using genetic algorithm. In the method adopted here, there is no need for experimental stress-strain curve which is always accompanied by restricting phenomenon such as necking in tension and bulging in compression. Instead of stress-strain curve, the difference between the post-deformation profiles of specimens obtained from experiment and the numerical simulations is adopted as the objective function for optimization purposes. The results suggest that the approach introduced in this work can substitute costly instrumentations normally needed for obtaining stress-strain curves at high strain rates and elevated temperature.

  Info
Periodical
Advanced Materials Research (Volumes 264-265)
Edited by
M.S.J. Hashmi, S. Mridha and S. Naher
Pages
862-870
DOI
10.4028/www.scientific.net/AMR.264-265.862
Citation
G.H. Majzoobi, S. F. Z. Khosroshahi, H. B. Mohammadloo, "Determination of the Constants of Zerilli-Armstrong Constitutive Relation Using Genetic Algorithm", Advanced Materials Research, Vols. 264-265, pp. 862-870, 2011
Online since
June 2011
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: Gillo Giuliano
Inverse Analysis Optimization and Stochastic Approaches
Abstract:This paper introduces a fast and accurate procedure for determining the constants of magnesium AZ31 alloy at 713 K. The material behaviour is...
643
Authors: Xiao Jun Zuo, Jun Chu Li, Da Hai Liu, Long Fei Zeng
Chapter 14: Modelling, Analysis and Simulation
Abstract:Constructing accurate constitutive equation from the optimal material constants is the basis for finite element numerical simulation. To...
1497
Authors: Nicholas J. Politis, Denis J. Politis, Catrin Mair Davies, Jian Guo Lin
Chapter 6: Microstructure and Properties
Abstract:Constitutive equations have been used extensively to accurately describe material properties over a wide range of temperatures and strain...
251