Paper Title:
Development of a 3D Crystal Plasticity Model that Tracks Dislocation Density Evolution
  Abstract

A dislocation density based crystal plasticity finite element model (CPFEM) is developed for aluminum in which dislocation densities evolve on all octahedral slip systems. Based upon the kinematics of crystal deformation and dislocation interaction laws, dislocation generation and annihilation are modeled. The CPFEM model is calibrated for pure aluminum using experimental stress-strain curves of pure aluminum single crystal from literature. Crystallographic texture predictions in plane-strain compression of aluminum are validated against experimental observations in the literature. The framework is implemented in ABAQUS with user interface UMAT subroutine. Dislocation densities evolve and are tracked as state variables in the model, leading to spatially inhomogeneous dislocation densities that show patterning in the dislocation structures.

  Info
Periodical
Solid State Phenomena (Volume 160)
Edited by
H. Klein and R.A. Schwarzer
Pages
57-62
DOI
10.4028/www.scientific.net/SSP.160.57
Citation
A. Alankar, I. N. Mastorakos, D. P. Field, "Development of a 3D Crystal Plasticity Model that Tracks Dislocation Density Evolution", Solid State Phenomena, Vol. 160, pp. 57-62, 2010
Online since
February 2010
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: Shixue Wen, Jerzy A. Szpunar
Abstract:The influence of current density and temperature on the macrotexture, the orientation and size of grains, and the corrosion resistance of tin...
1413
Authors: W. Mao, Y. Li, W. Guo, Z. An
Abstract:The precipitation behaviors of fine MnS and other second phase particles in hot band, decarburized sheet and 875 oC annealed sheet before...
247
Authors: Hong Wei Ji, Huai Wen Wang
Abstract:Short span compressive experiments of molded pulp specimens were carried out on the SHIMADZU material test machine, resulting in the...
202
Authors: Rui Dong Xu, Da Cheng Zhai, Shuang Li Hu
Chapter 2: Surface Engineering/Coatings
Abstract:Square-wave double pulse current was used to electrodeposit Ni-W-P-CeO2-SiO2 composite coatings in fine-grained...
856
Authors: Yuan Xiang Zhang, Jun Wu, Ying Yu Ji
Abstract:This paper investigates the electromigration (EM) induced void and hillock generation in IC interconnect structures. The driving force for...
6