Active strain-energy tuning of low actuator-fraction shape-memory alloy (SMA) hybrid composites

This paper presents a geometric non-linear finite element model of shape memory alloy composite plates and its source code in order to determine critical loads and to trace post-buckling paths of the composite plates. A numerical study was conducted on symmetric and anti-symmetric angle-ply and cross-ply composite plates. Buckling and post-buckling improvements of composite plates due to the shape memory effect behaviour of shape memory alloy were carried out. The pre-strained shape memory alloy wires were embedded within laminated composite plates so that recovery stress could be induced with the heated wires. The methods of active property tuning and active strain energy tuning were applied to show the various effects of the shape memory alloy on the studied behaviour. The result showed that significant improvements occurred in the critical loads and the post-buckling paths of the symmetric and anti-symmetric angle-ply and the symmetric cross-ply composite plates due to the active strain energy tuning method. In the case of the anti-symmetric cross-ply composite plate where bifurcation point did not exist, the post-buckling path was substantially improved.

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The Strain Energy Tuning of the Shape Memory Alloy on the Post-Buckling of Composite Plates Using Finite Element Method

Advanced Materials Research ◽

10.4028/scientific5/amr.445.577 ◽

2012 ◽

Vol 445 ◽

pp. 577-582

Author(s):

Zainudin A. Rasid ◽

Saiful Amri Mazlan ◽

Amran Ayob ◽

Rizal Zahari ◽

Dayang Laila Majid ◽

...

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Shape Memory Alloy ◽

Shape Memory ◽

Strain Energy ◽

Composite Plates ◽

Post Buckling ◽

Energy Tuning ◽

Element Method

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Micromechanics of stress transfer in shape memory alloy reinforced three-phase composites

Journal of Intelligent Material Systems and Structures ◽

10.1177/1045389x18783086 ◽

2018 ◽

Vol 29 (15) ◽

pp. 3151-3164 ◽

Cited By ~ 8

Author(s):

Fathollah Taheri-Behrooz ◽

Mohammad Javad Mahdavizade ◽

Alireza Ostadrahimi

Keyword(s):

Finite Element ◽

Stress Distribution ◽

Shape Memory Alloy ◽

Shape Memory ◽

Thermal Loading ◽

Hybrid Composites ◽

Stress Transfer ◽

Shape Memory Alloy Wire ◽

Alloy Wire ◽

Pull Out

Due to the weak interface in shape memory alloy wire–reinforced composites, the influence of interphase on the mechanical properties and stress distribution of hybrid composites is of considerable importance. In this article, a three-cylinder axisymmetric model using a pull-out test is developed to predict stress transfer and interfacial behavior between shape memory alloy wire, interphase, and matrix. In this article, only superelasticity behavior of the shape memory alloy wire is considered. Based on the stress function method and the principle of minimum complementary energy, stress distribution is derived for three different cases in terms of loading and boundary conditions (thermal loading model, intact model, and partially debonded model). Inhomogeneous interphase and different radial and hoop stress components in each phase are considered to achieve deeper physical understanding. Finite element analysis also performed to simulate stress transfer from the wire to the matrix through the interphase. To evaluate the accuracy of this model, the results of the work are compared with the results of the two-cylinder model proposed by Wang et al. and finite element results.

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