Journal ArticleDOI
One-Dimensional Thermomechanical Constitutive Relations for Shape Memory Materials
Chen Liang,Craig A. Rogers +1 more
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TLDR
In this article, a complete, unified, one-dimensional constitutive model of shape memory materials is developed and presented in the form of a thermomechanical model for shape memory alloys.Abstract:
The use of the thermoelastic martensitic transformation and its reverse transformation has recently been proposed and demonstrated for several active control ap plications. However, the present constitutive models have lacked several important funda mental concepts that are essential for many of the proposed intelligent material system ap plications such as shape memory hybrid composites.A complete, unified, one-dimensional constitutive model of shape memory materials is developed and presented in this paper. The thermomechanical model formulation herein will investigate important material characteristics involved with the internal phase transformation of shape memory alloys. These characteristics include energy dissipation in the material that governs the damping behavior, stress-strain-temperature relations for pseudoelasticity, and the shape memory effect. Some numerical examples using the model are also presented.read more
Citations
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Proceedings ArticleDOI
Robust control of a class of mechanical systems actuated by shape memory alloys
V. Reddy Jala,Hashem Ashrafiuon +1 more
TL;DR: In this article, a model-based sliding mode control law for interconnected mechanical systems which use shape memory alloys (SMA) as actuators is presented, assuming only positions are available for measurement.
Journal ArticleDOI
Influence of Structural Parameters of Shape Memory Alloy Corrugated Gaskets on the Contact Pressure of Bolted Flange Joints
TL;DR: In this article, the deformation mechanism of SMA-CGs was examined according to their structural properties under installation and operating conditions to establish an SMACG thermal-mechanical coupling model with the finite element analysis (FEA) method, which has been verified through experimentation.
Proceedings ArticleDOI
Time-domain mechanical models for SMA pseudoelastic damping behavior
Brendon Malovrh,Farhan Gandhi +1 more
TL;DR: In this paper, a series of mechanism-based phenomenological models, comprising of springs and friction elements, are presented for the pseudoelastic damping behavior of Shape Memory Alloys.
Proceedings ArticleDOI
Design and control strategies using smart structures technology for rotorcraft performance enhancement
TL;DR: Quackenbush et al. as mentioned in this paper developed and applied actuators based on Shape Memory Alloy (SMA) technology, which will permit on-blade control while minimizing power requirements and mechanical complexity.
Journal ArticleDOI
Stability of a shaft made from a shape memory alloy undergoing martensite transitions under the action of torque strength and an axial force
L. G. Sil’chenko,A. A. Movchan +1 more
TL;DR: In this paper, the authors analyzed the global stability failure of an actuating body force exciter in the form of a cylindrical tube undergoing direct and reversed martensite transitions under the action of a combined axial force and torque.
References
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Journal ArticleDOI
Thermoelasticity, pseudoelasticity and the memory effects associated with martensitic transformations
TL;DR: In this paper, the pertinent thermodynamic relations, nucleation and growth and the influence of stress are considered and applied to thermoelasticity and the memory effects, and the effects of stress on memory are investigated.
Journal ArticleDOI
A thermomechanical description of materials with internal variables in the process of phase transitions
K. Tanaka,S. Nagaki +1 more
TL;DR: In this article, a model for thermoplastic materials in the process of solid-solid phase transition is presented, where the material is characterized by three different internal state variables: two internal variables which specify the crystallographic structural change during the plastic deformation, and a set of scalar internal variables describing the extent of phase transition.
Journal ArticleDOI
Some Applications of Shape-Memory Alloys
TL;DR: In this article, the shape memory effect and other interesting properties of shape memory alloys are discussed after a brief discussion of the nature of the shape-memory effect and some interesting properties.