This Article Full Text (PDF) All Versions of this Article: 1045389X07077592v1 19/5/533    most recent References Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Add to Saved Citations Download to citation manager Add to My Marked Citations Google Scholar Articles by Ikeda, T. Social Bookmarking                   What's this?

Constitutive Model of Shape Memory Alloys for Asymmetric Quasiplastic Behavior

Department of Aerospace Engineering, Nagoya University, Chikusa, Nagoya 464-8603, Japan, ikeda{at}nuae.nagoya-u.ac.jp

A simple constitutive model of shape memory alloys for analyses of tension—compression quasiplastic behavior is derived. Here, three martensitic variants are considered; namely, thermal-induced, tensile stress-induced, and compressive stress-induced martensitic variants. Reorientation from one variant to another variant is assumed to take place according to a reorientation energy criterion based on grain-based micromechanics. Stress—strain hysteresis loops for a bar under tension—compression cyclic loading are simulated and they are compared with available experimental data. Results show that this constitutive model can capture asymmetric stress—strain behavior for tension and compression and a strain rate effect on stress—strain—temperature relationship quite well.

Key Words: shape memory alloys • quasiplasticity • constitutive equations • reorientation • tension—compression asymmetry.

CiteULike    Connotea    Del.icio.us    Digg    Reddit    Technorati    What's this?