Finite element modeling of the damping capacity and vibration behavior of cellular shape memory alloy

Jun Wang, Yinfeng Cao, Yingjie Xu, Xiaojun Gu, Jihong Zhu, Weihong Zhang

科研成果: 期刊稿件文章同行评审

11 引用 (Scopus)

摘要

Owing to the dissipative phase transformation and the porosity characteristics, cellular shape memory alloy (SMA) shows high damping capacity and thereby superior performance in vibration control. This paper studies the damping capacity and vibration behavior of the cellular SMA by means of the unit-cell finite element method. A material model of dense SMA is employed to simulate the thermodynamic behavior of the cellular SMA. A loss factor ω is introduced to evaluate the damping capacity of cellular SMA in a successive loading-unloading cycle. The effects of the material properties (the stress difference between the forward and reverse transformations, the saturated value of the transformation strain), the ambient temperature and the pore morphology (the porosity and the axial ratio of spheroid pore) on the damping capacity are investigated. Besides, the cellular SMA with randomly distributed pores is also considered. Simulation results well demonstrate the high damping capacity of the cellular SMA due to the local dissipative martensite phase transformation. Finally, by comparison of the free vibration behavior between the cellular SMA beam and the elastic beam, the cellular SMA exhibits superior performance in vibration control.

源语言英语
页(从-至)2142-2155
页数14
期刊Mechanics of Advanced Materials and Structures
29
15
DOI
出版状态已出版 - 2022

指纹

探究 'Finite element modeling of the damping capacity and vibration behavior of cellular shape memory alloy' 的科研主题。它们共同构成独一无二的指纹。

引用此