Hostname: page-component-586b7cd67f-dsjbd Total loading time: 0 Render date: 2024-11-29T07:30:49.857Z Has data issue: false hasContentIssue false
  • English
  • Français

A Representative Volume Element Based Micromechanical Constitutive Modeling of Woven Composites

Published online by Cambridge University Press:  01 February 2011

A.M. Rajendran ,
R. Valisetty ,
R. Namburu  and
Y.A. Bahei-El-Din
A.M. Rajendran
Affiliation:
U.S. Army Research Office, Research Triangle Park, NC 27709-2211, U.S.A.
R. Valisetty
Affiliation:
U.S. Army Research Laboratory Aberdeen Proving Ground, MD 21005-5067, U.S.A.
R. Namburu
Affiliation:
U.S. Army Research Laboratory Aberdeen Proving Ground, MD 21005-5067, U.S.A.
Y.A. Bahei-El-Din
Affiliation:
Department of Mechanical, Aerospace & Nuclear EngineeringRensselaer Polytechnic InstituteTroy, NY 12180-3590, U.S.A.
Get access

Abstract

This paper presents a computationally intensive, multiscale constitutive model for 3D-woven composites exhibiting progressive damage. The model is based on analysis of a representative volume element (RVE), which is derived from the actual woven architecture. The link between the local phenomena and the overall response is described by a transformation field analysis (TFA) in terms of stress concentration factors and influence function, which reflect the microgeometry and properties of the constituents. In this way, the local geometric and physical effects are represented in the model with substantial details so that the local stress and strain fields and the overall response could be accurately computed. It seems to be a reliable approach to capture the effects of the material heterogeneity and damage on wave dispersion and attenuation in shockwave problems. The RVE/TFA-based constitutive model was implemented into the DYNA finite element code, and simulations of shock and impact problems were performed to describe the various damage mechanisms. The TFA model is computationally intensive and requires massively parallel computing. This paper examines the effects of the local field representation, and the in situ damage phenomena on the overall response.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 882: Symposium EE – Linking Length Scales in the Mechanical Behavior of Materials , 2005 , EE7.6
Copyright
Copyright © Materials Research Society 2005

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1 Bahei-El-Din, Y.A. and Zikry, M.A., “Impact-Induced Deformation Fields in 2D and 3D Woven Composites,” Composites Science and Technology 63, 923 (2003).Google Scholar
2 Bahei-El-Din, Y.A., Rajendran, A.M., and Zikry, M.A., M. A, International Journal of Solids and Structures 41, 2307 (2004).Google Scholar
3 Dvorak, G.J., “Transformation Fields Analysis of Inelastic Composite Materials,” Proceedings of the Royal Society A437, 311 (1992).Google Scholar
4 Dvorak, G.J., Bahei-El-Din, Y.A., and Wafa, A.M., Computational Mechanics 14, 201 (1994).Google Scholar
5 Dvorak, G.J. and Zhang, J., Journal of the Mechanics and Physics of Solids 49, 2517 (2001).Google Scholar
6 Valisetty, R., Namburu, R., Rajendran, A., and Bahei-El-Din, Y., Proceedings of the International Conference on Computational & Experimental Engineering & Sciences, Edited by Tadeau, A., Atluri, S.N., July 26-29, 2004, Madiera, Portugal.Google Scholar