Morphing Wing I - finite element modelling of a NiTi SMA wire

Wan A Hamid, Wan Luqman Hakim and Iannucci, Lorenzo and Robinson, Paul (2017) Morphing Wing I - finite element modelling of a NiTi SMA wire. In: 8th ECCOMAS Thematic Conference on Smart Structures and Materials (SMART 2017), 5 - 8 June 2017, Madrid, Spain.

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Abstract

This research aims to model the shape memory effect (SME) of a shape memory alloy (SMA) wire in a commercial explicit finite element analysis (FEA) software, Ls-Dyna. A user defined material (UMAT) model was developed by implementing a one dimensional constitutive model into Ls-Dyna. A simple structure consisting of one SMA wire connected to a linear spring in series was analysed using Ls-Dyna. One complete heating-cooling cycle was applied on the SMA wire, and the resulting stress and strain were validated by analytical solutions. This SMA model was further tested for mesh sensitivity, for a range of values of key parameters, and for fully-constrained and constant load cases. Finally, actuation of several morphing aerofoil sections was studied. Among the proposed aerofoil configurations, an aerofoil with a corrugated plate in between the D-nose spar and the trailing edge (TE) section, with one SMA wire in each cell, provided the highest TE deflection. The results show the applicability of the current model in actuation of the morphing aerofoils.

Item Type:	Conference or Workshop Item (Plenary Papers)
Additional Information:	9324/77720
Uncontrolled Keywords:	Shape Memory Alloy, Morphing Wing, Smart Structures, FEA, Ls-Dyna.
Subjects:	T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL500 Aeronautics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User:	Dr. Wan Luqman Hakim Wan Abdul Hamid
Date Deposited:	11 Feb 2020 12:18
Last Modified:	10 Jul 2020 16:19
URI:	http://irep.iium.edu.my/id/eprint/77720

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