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
A review on structural enhancement and repair using piezoelectric materials and shape memory alloys
Quan Wang,Nan Wu +1 more
TL;DR: In the past two decades, the active and controllable mechanical properties of piezoelectric materials and shape memory alloys have been widely employed in structural enhancement and repair with remarkable and interesting research findings.
Journal ArticleDOI
Theoretical and Experimental Studies for the Application of Shape Memory Alloys in Civil Engineering
Mauro Dolce,Donatello Cardone +1 more
TL;DR: In this paper, the authors provide an overview of the main results achieved, consisting of the conceptual design, implementation, and testing of three families of SMA-based devices, namely: (i) special braces for framed structures, (ii) seismic isolation devices for buildings and bridges, and (iii) smart ties for arches and vaults.
Proceedings ArticleDOI
The multi-dimensional constitutive relations of shape memory alloys
TL;DR: In this paper, a multi-dimensional thermomechanical constitutive model for shape memory alloys is presented, which is based upon a combination of both micromechanics and macromachanics.
Journal ArticleDOI
An Automotive SMA Mirror Actuator: Modeling, Design, and Experimental Evaluation
Eric Williams,Mohammad Elahinia +1 more
TL;DR: In this article, a two degree of freedom SMA actuator has been developed to orient the position of a rearview mirror for automotive applications, and a prototype SMA actuated mirror is designed and fabricated.
Journal ArticleDOI
Chaos and hyperchaos in shape memory systems
TL;DR: The dynamical analysis of intelligent systems that use shape memory actuators involves a multi-degree of freedom system and shows some relation between the transmissibility of order, chaos and hyperchaos with temperature.
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.