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

页码：2709 / 2727

页数：19

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