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Proceedings Paper

Modeling and numerical analysis of a three-dimensional shape memory alloy shell structure
Author(s): Pengtao Zhao; Jinhao Qiu; Hongli Ji; Mingyi Wang; Rui Nie
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Paper Abstract

In this paper, modeling and numerical analysis of a three dimensional shell structure made of shape memory alloy (SMA) are introduced. As a new smart material, SMA material has been applied in many fields due to two significant macroscopic phenomena which are called the shape memory effect (SME) and pseudoelasticity. The material of SMA exhibits two-way shape memory effect (TWSME) after undergoing especial heat treatment and thermo-mechanical training. This work investigates the numerical simulation and application of the SMA component: SMA strip, which has been pre-curved in the room temperature. The component is expected to extend upon heating and shorten on cooling along the curve. Hence the shape memory effect can be used to change the shape of the structure. The return mapping algorithm of the 3-D SMA thermomechanical constitutive equations based on Boyd-Lagoudas model is used in the finite element analysis to describe the material features of the SMA. In this paper, the ABAQUS finite element program has been utilized with a user material subroutine (UMAT) which is written in the FORTRAN code for the modeling of the SMA strip. The SMA component which has a certain initial transformation strain can emerge considerable deflection during the reverse phase transformation inducing by the temperature.

Paper Details

Date Published: 12 April 2012
PDF: 10 pages
Proc. SPIE 8409, Third International Conference on Smart Materials and Nanotechnology in Engineering, 840914 (12 April 2012); doi: 10.1117/12.923553
Show Author Affiliations
Pengtao Zhao, Nanjing Univ. of Aeronautics and Astronautics (China)
Jinhao Qiu, Nanjing Univ. of Aeronautics and Astronautics (China)
Hongli Ji, Nanjing Univ. of Aeronautics and Astronautics (China)
Mingyi Wang, Nanjing Univ. of Aeronautics and Astronautics (China)
Rui Nie, Nanjing Univ. of Aeronautics and Astronautics (China)


Published in SPIE Proceedings Vol. 8409:
Third International Conference on Smart Materials and Nanotechnology in Engineering
Jinsong Leng; Yoseph Bar-Cohen; In Lee; Jian Lu, Editor(s)

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