Numerical Simulation for Stress-Induced Phase Transformation of SMAs Tube under Tension


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Recent uniaxial tension tests have shown that stress-induced phase transformation in NiTi SMAs tubes can lead to helical-type localized deformation and propagation phenomena. Based on detailed experimental observation and possible deformation mechanism, a trilinear stress-strain relationship with intrinsic strain softening is employed to represent the material constitutive behavior in this paper, and a 3-D finite deformation simulation is performed to model the tube under tension by using nonlinear FEM. The simulations successfully reproduce the nucleation and evolution of the helical-type martensite band during stress-induced transformation observed in the experiments.



Key Engineering Materials (Volumes 340-341)

Edited by:

N. Ohno and T. Uehara




Z. D. Hu et al., "Numerical Simulation for Stress-Induced Phase Transformation of SMAs Tube under Tension", Key Engineering Materials, Vols. 340-341, pp. 1181-1186, 2007

Online since:

June 2007




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