SMA pseudo-elastic hysteresis with tension-compression asymmetry: explicit simulation based on elastoplasticity models

SMA pseudo-elastic hysteresis with tension-compression asymmetry at finite deformation may be simulated by finite elastoplastic [J.sub.2]-flow models with nonlinear combined hardening, in a direct, explicit sense with no reference to any phase variables. To this goal, a novel method of treating tens...

Full description

Saved in:
Bibliographic Details
Published inContinuum mechanics and thermodynamics p. 959
Main Authors Wang, Xiao-Ming, Wang, Zhao-Ling, Xiao, Heng
Format Journal Article
LanguageEnglish
Published Springer 01.11.2015
Online AccessGet full text

Cover

More Information
Summary:SMA pseudo-elastic hysteresis with tension-compression asymmetry at finite deformation may be simulated by finite elastoplastic [J.sub.2]-flow models with nonlinear combined hardening, in a direct, explicit sense with no reference to any phase variables. To this goal, a novel method of treating tension-compression asymmetry is proposed, and the hardening moduli are determined directly from any two given pairs of singlevariable functions shaping non-symmetric hysteresis loops in uniaxial tension and compression so that the combined hardening model thus established can automatically exactly give rise to any given shapes of nonsymmetric hysteresis loops. Numerical examples show good agreement with test data. Keywords SMA pseudo-elasticity . Finite deformation . Tension-compression asymmetry . Elastoplasticity models . Explicit simulation
ISSN:0935-1175
DOI:10.1007/s00161-014-0394-l