Finite element analysis of superelastic, large deformation behavior of shape memory alloy helical springs
Finite element analysis of superelastic, large deformation behavior of shape memory alloy helical springs
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DOI：
10.1016/j.compstruc.2004.03.025
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发表时间：
2002-09
影响因子：
4.7
通讯作者：
Y. Toi;Jong-Bin Lee;M. Taya
中科院分区：
文献类型：
--
作者：
Y. Toi;Jong-Bin Lee;M. Taya
将Brinson的形状记忆合金（SMA）一维本构模型扩展到考虑非对称拉伸、压缩和扭转行为。采用全拉格朗日方法，建立了SMA螺旋弹簧超弹性大变形分析的增量有限元法。对NiTi螺旋弹簧进行了分析，并将计算结果与实验结果进行了比较，验证了本文计算方法在SMA驱动器实际设计中的有效性。
Brinson's one-dimensional constitutive modeling for shape memory alloy (SMA) is extended to consider the asymmetric tensile and compressive behavior as well as the torsional behavior. The incremental finite element method using linear Timoshenko beam elements is formulated by the total Lagrangian approach for the superelastic, large deformation analysis of SMA helical springs. The NiTi helical springs are analyzed and the calculated results are compared with the experimental results to show the validity of the present computational procedure in actual design of SMA actuators.