This work presents a strategy to identify the optimal localized activation and actuation for a morphing thermally activated SMP structure or structural component to obtain a targeted shape change or set of shape features, subject to design objectives such as minimal total required energy and time. This strategy combines numerical representations of the SMP structure’s thermo-mechanical behavior subject to activation and actuation with gradient-based nonlinear optimization methods to solve the morphing inverse problem that includes minimizing cost functions which address thermal and mechanical energy, morphing time, and damage. In particular, the optimization strategy utilizes the adjoint method to efficiently compute the gradient of the objective functional(s) with respect to the design parameters for this coupled thermo-mechanical problem.
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ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
September 16–18, 2013
Snowbird, Utah, USA
Conference Sponsors:
- Aerospace Division
ISBN:
978-0-7918-5604-8
PROCEEDINGS PAPER
An Adjoint Based Approach for Optimal Design of Morphing SMP
Shuang Wang,
Shuang Wang
University of Pittsburgh, Pittsburgh, PA
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John C. Brigham
John C. Brigham
University of Pittsburgh, Pittsburgh, PA
Search for other works by this author on:
Shuang Wang
University of Pittsburgh, Pittsburgh, PA
John C. Brigham
University of Pittsburgh, Pittsburgh, PA
Paper No:
SMASIS2013-3250, V002T06A024; 8 pages
Published Online:
February 20, 2014
Citation
Wang, S, & Brigham, JC. "An Adjoint Based Approach for Optimal Design of Morphing SMP." Proceedings of the ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. Volume 2: Mechanics and Behavior of Active Materials; Structural Health Monitoring; Bioinspired Smart Materials and Systems; Energy Harvesting. Snowbird, Utah, USA. September 16–18, 2013. V002T06A024. ASME. https://doi.org/10.1115/SMASIS2013-3250
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