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Published in: Structural and Multidisciplinary Optimization 4/2021

07-01-2021 | Research Paper

Topology optimization of compliant mechanisms and structures subjected to design-dependent pressure loadings

Authors: Yifu Lu, Liyong Tong

Published in: Structural and Multidisciplinary Optimization | Issue 4/2021

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Abstract

This article presents an extended algorithm for topology optimization of compliant mechanisms and structures with design-dependent pressure loadings using the moving iso-surface threshold (MIST) method. In this algorithm, the fluid-structure interface is modeled using the finite element method via considering equivalent virtual strain energy and work and is tracked by an element-based searching scheme. Design-dependent pressure loads are directly applied on interface boundary and are calculated as virtual work equivalent nodal forces in the interface elements based on the finite element formulation. Several numerical examples are presented for topology optimization of mean compliance and compliant mechanisms. The present algorithm is validated through benchmarking with the results in literature and/or full finite element analysis (FEA) results of the optimum compliant mechanism and structure designs.

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Literature
go back to reference Bendsoe MP, Sigmund O (2003) Topology optimization: theory, methods and applications. Springer, BerlinMATH Bendsoe MP, Sigmund O (2003) Topology optimization: theory, methods and applications. Springer, BerlinMATH
go back to reference Vasista S, Tong L (2014) Topology optimisation via the moving iso-surface threshold method: implementation and application. Aeronaut J 118(1201):315–342CrossRef Vasista S, Tong L (2014) Topology optimisation via the moving iso-surface threshold method: implementation and application. Aeronaut J 118(1201):315–342CrossRef
go back to reference Vos R, Barrett R (2011) Mechanics of pressure-adaptive honeycomb and its application to wing morphing. Smart Mater Struct 20(9):094010CrossRef Vos R, Barrett R (2011) Mechanics of pressure-adaptive honeycomb and its application to wing morphing. Smart Mater Struct 20(9):094010CrossRef
Metadata
Title
Topology optimization of compliant mechanisms and structures subjected to design-dependent pressure loadings
Authors
Yifu Lu
Liyong Tong
Publication date
07-01-2021
Publisher
Springer Berlin Heidelberg
Published in
Structural and Multidisciplinary Optimization / Issue 4/2021
Print ISSN: 1615-147X
Electronic ISSN: 1615-1488
DOI
https://doi.org/10.1007/s00158-020-02786-y

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