Author
Aghna Mukherjee
Bio: Aghna Mukherjee is an academic researcher from Indian Institute of Technology Madras. The author has contributed to research in topics: Bistability & Finite element method. The author has an hindex of 3, co-authored 8 publications receiving 32 citations.
Papers
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TL;DR: In this article, an analytical model is developed, which extends the previously available models in literature to account for the cantilever boundary condition for a special class of hybrid bistable symmetric laminates (HBSL).
24 citations
TL;DR: In this paper, the authors investigated the snap-through characteristics of a special class of hybrid bistable symmetric laminate (HBSL) subjected to different loading constraints and imperfections.
19 citations
TL;DR: Two example problems have been solved, which show the practical application of this numerical scheme, in the design of mechanisms actuated by smart materials like shape memory alloys and macro fiber composites, obviating the limitations of the available techniques in solving such problems.
14 citations
7 citations
19 May 2020
TL;DR: In this article, a conceptual design of a morphing wing is proposed based on the insights gained from the numerical analysis that uses two hybrid bistable symmetric laminates as skin with a corrugated core.
Abstract: In the recent past, bistable laminates have been widely studied for their potential in wing morphing applications. The existence of multiple stable states makes them extremely viable as structural elements. However, for successful deployment, these laminates must be integrated into a larger mechanism. For integration, the bistable laminates are required to be clamped to a larger structure without the loss of bistability. In this work, an attempt has been made to understand the effect of integration (i.e., using different structural constraints and clamping) on the bistability and the snapthrough performance of a special class of hybrid bistable symmetric laminates (HBSLs). The structural analysis has been carried out using FEA software ABAQUS. Subsequently, a conceptual design of a morphing wing is proposed based on the insights gained from the numerical analysis that uses two HBSLs as skin with a corrugated core. Finally, using the analysis guidelines, two HBSL skins and a circular corrugated core are manufactured and integrated to show the possibility of using such bistable laminates as skin.
5 citations
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TL;DR: Multistability is the phenomenon of multiple coexistent stable states, which are highly sensitive to perturbations, initial conditions, system parameters, etc. Multistability has been widely found in various scientific areas including biology, physics, chemistry, climatology, sociology, and ecology as mentioned in this paper.
96 citations
TL;DR: In this article , the application of bistable morphing composites in energy harvesting is discussed and mathematical modeling of the dynamic behavior of these composite structures is explained, and the applications of artificial-intelligence techniques to optimize the design of Bistable structures and to predict their response under different actuating schemes are discussed.
Abstract: Bistable morphing composites have shown promising applications in energy harvesting due to their capabilities to change their shape and maintain two different states without any external loading. In this review article, the application of these composites in energy harvesting is discussed. Actuating techniques used to change the shape of a composite structure from one state to another is discussed. Mathematical modeling of the dynamic behavior of these composite structures is explained. Finally, the applications of artificial-intelligence techniques to optimize the design of bistable structures and to predict their response under different actuating schemes are discussed.
86 citations
TL;DR: Multistability is the phenomenon of multiple coexistent stable states, which are highly sensitive to perturbations, initial conditions, system parameters, etc. Multistability has been widely found in various scientific areas including biology, physics, chemistry, climatology, sociology, and ecology as mentioned in this paper .
84 citations
TL;DR: In this article, an analytical model is developed, which extends the previously available models in literature to account for the cantilever boundary condition for a special class of hybrid bistable symmetric laminates (HBSL).
24 citations
TL;DR: In this article, a novel bistable hybrid composite laminate embedded with bimetallic strips was designed by combining the stable-state characteristics of the Bistable laminate with the temperature-sensing characteristics of Bimetallic strip described in this paper.
23 citations