Equivalent linear stiffness and damping of a shape memory alloy bar operating at isothermal and non-isothermal condition

被引：4
作者：
Jose, Sebin [1 ]
Chakraborty, Goutam [1 ]
Bhattacharyya, Ranjan [1 ]
机构：
[1] IIT Kharagpur, Syst Dynam & Control Lab, Mech Engn Dept, Kharagpur 721302, W Bengal, India
来源：
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES | 2018年 / 29卷 / 13期
关键词：
Shape memory alloy; pseudoelasticity; complex stiffness; isothermal; non-isothermal; VIBRATION ABSORBER; BEHAVIOR; DEVICES; WIRES; TRANSFORMATION; OSCILLATIONS; DISSIPATION; AMPLITUDE; DYNAMICS; DESIGN;
D O I：
10.1177/1045389X18778361
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Complex stiffness of shape memory alloy bar is evaluated for isothermal and non-isothermal operating conditions. Analytical, numerical, and graphical approaches are used to evaluate complex stiffness. Real part of complex stiffness provides a measure of storage modulus, while imaginary part provides that of loss modulus. Complex stiffness is described as a function of forcing amplitude. Thermomechanical coupling changes the complex stiffness of the shape memory alloy bar at different operating conditions. It even becomes a function of forcing frequency during non-isothermal operation.
引用
收藏
页码：2709 / 2727
页数：19
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