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MECSOL 2022
8th International Symposium on Solid Mechanics
A topology optimization of a compliant mechanism using piezoelectric material
Submission Author:
André Piva Romeu , RS
Co-Authors:
André Piva Romeu, Daniel Milbrath De Leon, Maicon Dione Klein
Presenter: André Piva Romeu
doi://10.26678/ABCM.MECSOL2022.MSL22-0082
Abstract
The present study aimed to applied piezoelectric materials in the context of compliant mechanisms. To synthesize these mechanisms, the topology optimization approach was used. Topology optimization is a mathematical method to assign material in a prescribed domain, usually a Finite Element Method approach is taken and the goal is to minimize compliance while reducing mass. Unlike the usual topology problem, the approach employed in this study for compliant mechanism was maximize the output displacement. This formulation for the optimization problem produces kinemactly efficient mechanism designs. One of the characteristics of the compliant mechanisms is the lack of joint and hinges, which facilitates the use of them in micro and nano scale, since no assembly is necessary and there are no gaps between parts. The topology optimization method used was an adapted SIMP method for non-isotropic materials and the input parameter of the optimization problem uses the piezoelectric material characteristic of generating strain from electric fields. This approach makes feasible the project of micro mechanisms powered by electric fields and, therefore, can be used in a number of different applications, among them embedded systems, with the ever shrinking nature of computational devices; and medical use, since most of the piezoelectric materials are ceramics and crystals, nonreactive with human tissues.
Keywords
Compliant Mechanism, Topology optimization, piezoelectric material
