Time-domain mechanical models for SMA pseudoelastic damping behavior

Brendon Malovrh; Farhan Gandhi

doi:10.1117/12.384573

27 April 2000 Time-domain mechanical models for SMA pseudoelastic damping behavior

Brendon Malovrh, Farhan Gandhi

Proceedings Volume 3989, Smart Structures and Materials 2000: Damping and Isolation; (2000) https://doi.org/10.1117/12.384573
Event: SPIE's 7th Annual International Symposium on Smart Structures and Materials, 2000, Newport Beach, CA, United States

Abstract

A series of mechanism-based phenomenological models, comprising of springs and friction elements, are presented for the pseudoelastic damping behavior of Shape Memory Alloys. The constitutive equations and a method for identifying the parameters from experimental hysteresis cycles are presented for each of the models. Comparisons are made with an existing phenomenological model. Unlike the thermodynamic-based models, the present models do not require calculation of austenite- martensite phase transformations. The mechanical analogies provide a strong physical basis to the models, and clear relationships are established between the unlocking of the friction elements and the occurrence of phase transformation.

Citation Download Citation

Brendon Malovrh and Farhan Gandhi "Time-domain mechanical models for SMA pseudoelastic damping behavior", Proc. SPIE 3989, Smart Structures and Materials 2000: Damping and Isolation, (27 April 2000); https://doi.org/10.1117/12.384573

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