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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Journal ArticleDOI
Modeling and control of a flexible continuum module actuated by embedded shape memory alloys
Alireza Hadi,Hossein Akbari +1 more
TL;DR: In this article, shape memory alloys (SMA) are used for the position control of a two-degree-of-freedom (2DOF) manipulator for colonoscopy.
DissertationDOI
A Micromechanics-Inspired Three-Dimensional Constitutive Model for the Thermomechanical Response of Shape-Memory Alloys
TL;DR: In this paper, a micromechanics-inspired constitutive model for polycrystalline shape-memory alloys is presented to predict the response of the material and track the phase transformation process for multi-axial, proportional and nonproportional loading and unloading experiments.
Book ChapterDOI
Numerical Simulation of a Semi-Active Vibration Control Device Based on Superelastic Shape Memory Alloy Wires
Corneliu Cismasiu,Filipe Santos +1 more
Journal ArticleDOI
Softening micromechanical constitutive model of stress induced martensite transformation for NiTi single crystal shape memory alloy
YiGuo Zhu,Yang Zhang,Dan Zhao +2 more
TL;DR: In this article, a micromechanical model of stress induced martensite transformation for NiTi shape memory alloys single crystal is proposed based on the assumption of laminated microstructure, and simulation results are proved by experimental results of polycrystal with strong {111} texture.
Journal ArticleDOI
Approximate SIF of Mode-I Crack Closure in Matrix by Knotted SMA Fiber
TL;DR: In this paper, a theoretical model is proposed on closure of mode-I crack in matrix embedded with prestrained shape memory alloy (SMA) fiber as an actuator.
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.