Properties and Response of Composite Material with Spheroidal Superelastic Shape Memory Alloy Inclusions Subject to Three-Dimensional Stress State

Abstract

This communication illustrates the method of evaluation of the stiffness tensor and the stress-strain relationship of a particulate composite material with randomly distributed spheroidal superelastic shape memory alloy (SMA) inclusions that is subject to three-dimensional stresses. The Mori-Tanaka homogenization technique in conjunction with the Tanaka phenomenological SMA theory is applied to develop relations between the properties of the composite material and the applied stresses. In addition, the composite stress-strain loop reflecting hysteresis within the SMA material is generated. It is shown that the energy dissipation within a metal matrix composite with spherical SMA inclusions is comparable to that observed in composites with SMA fibres. The solution is exact within the framework of the assumptions of the Mori-Tanaka and phenomenological SMA theories.

Department(s)

Mechanical and Aerospace Engineering

Sponsor(s)

United States. Army Research Office

Keywords and Phrases

Composite Micromechanics; Homogenization Method; Metallic Matrix Composites; Three Dimensional; Energy dissipation; Shape memory effect; Stress-strain curves

International Standard Serial Number (ISSN)

0022-3727

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2010 Institute of Physics - IOP Publishing, All rights reserved.

Publication Date

01 May 2010

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