Optimization of bistable composite laminates with actuated state-change

D.N. Betts, H. Alicia Kim, C.R. Bowen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Adaptive structures offering large deformations with small and removable energy input are gaining increasing interest in the aerospace industry. One such mechanism is actuated asymmetric composite laminates. This paper presents an optimization formulation for the design of bistable laminates for reversible snap-through enabled by two orthogonal piezoelectric patches. The formulation optimizes the load carrying capability of the structure subject to deflection and actuation limits through variation in ply orientations and laminate geometry. We find the problem to be multimodal with the interactions between the optima and constraint boundaries to be dependent on the loading and snap-through directions and the values of the constraints. Reductions in total actuation voltage can be achieved through the simultaneous use of the positive and negative working ranges of two piezoelectric layers.
Original languageEnglish
Title of host publicationCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
PublisherAmerican Institute of Aeronautics and Astronautics
DOIs
Publication statusPublished - 2011
Event52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference - Denver, USA United States
Duration: 3 Apr 20116 Apr 2011

Conference

Conference52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
CountryUSA United States
CityDenver
Period3/04/116/04/11

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    Betts, D. N., Alicia Kim, H., & Bowen, C. R. (2011). Optimization of bistable composite laminates with actuated state-change. In Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference American Institute of Aeronautics and Astronautics. https://doi.org/10.2514/6.2011-1736