A Multiscale Modeling on Shape Memory Alloy Based Cellular Materials
Résumé
In this paper, the superelasticity effects of architected shape memory alloys (SMAs) are studied by the multilevel finite element method (FE2), which couples the responses of both the cellular level and structural level by considering their real-time information interactions. Firstly, a parametric analysis for the void fraction, the total stiffness, the hysteresis effect and the mass of the SMAs is conducted at the cellular level. Then, through a multiscale three point bending test, it is observed that the structure inherits both the hysteresis effect and the superelasticity from the architected cellular SMAs.
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