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Topology Optimization for Hybrid Lattice Compliant Mechanisms with Multiple Microstructures

Hybrid lattice compliant mechanisms (HLCMs) composed of multiple microstructures have attracted widespread interest due to their superior compliant performance compared to the traditional solid compliant mechanisms. A novel optimization scheme for HLCMs is presented using the independent continuous...

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Detalles Bibliográficos
Autores principales: Wei, Nan, Ye, Hongling, Wang, Weiwei, Li, Jicheng, Tian, Fuwei, Sui, Yunkang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9610777/
https://www.ncbi.nlm.nih.gov/pubmed/36295386
http://dx.doi.org/10.3390/ma15207321
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author Wei, Nan
Ye, Hongling
Wang, Weiwei
Li, Jicheng
Tian, Fuwei
Sui, Yunkang
author_facet Wei, Nan
Ye, Hongling
Wang, Weiwei
Li, Jicheng
Tian, Fuwei
Sui, Yunkang
author_sort Wei, Nan
collection PubMed
description Hybrid lattice compliant mechanisms (HLCMs) composed of multiple microstructures have attracted widespread interest due to their superior compliant performance compared to the traditional solid compliant mechanisms. A novel optimization scheme for HLCMs is presented using the independent continuous mapping (ICM) method. Firstly, the effective properties of multiple orthogonal and anisotropic lattice microstructures are obtained by taking advantage of homogenization theory, which are used to bridge the relationship between the macrostructure layout and microstructure recognition. Then, a new parallel topology optimization model for optimizing HLCMs is built via a generalized multi-material, recognizing interpolation scheme with filter functions. In addition, the characterization relationship between independent continuous variables and performance of different elements is established. Sensitivity analysis and linear programming are utilized to solve the optimal model. Lastly, numerical examples with a displacement inverter mechanism and compliant gripper mechanism demonstrate the effectiveness of the proposed method for designing HLCMs with various lattice microstructures. Anisotropic lattice microstructures (ALMs) significantly facilitate the efficient use of constitutive properties of materials. Hence, HLCMs consisting of various ALMs achieve superior compliant performance than counterparts comprising different orthogonal lattice microstructures (OLMs). The presented method offers a reference to optimize HLCMs, as well as promotes the theoretical development and application of the ICM method.
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spelling pubmed-96107772022-10-28 Topology Optimization for Hybrid Lattice Compliant Mechanisms with Multiple Microstructures Wei, Nan Ye, Hongling Wang, Weiwei Li, Jicheng Tian, Fuwei Sui, Yunkang Materials (Basel) Article Hybrid lattice compliant mechanisms (HLCMs) composed of multiple microstructures have attracted widespread interest due to their superior compliant performance compared to the traditional solid compliant mechanisms. A novel optimization scheme for HLCMs is presented using the independent continuous mapping (ICM) method. Firstly, the effective properties of multiple orthogonal and anisotropic lattice microstructures are obtained by taking advantage of homogenization theory, which are used to bridge the relationship between the macrostructure layout and microstructure recognition. Then, a new parallel topology optimization model for optimizing HLCMs is built via a generalized multi-material, recognizing interpolation scheme with filter functions. In addition, the characterization relationship between independent continuous variables and performance of different elements is established. Sensitivity analysis and linear programming are utilized to solve the optimal model. Lastly, numerical examples with a displacement inverter mechanism and compliant gripper mechanism demonstrate the effectiveness of the proposed method for designing HLCMs with various lattice microstructures. Anisotropic lattice microstructures (ALMs) significantly facilitate the efficient use of constitutive properties of materials. Hence, HLCMs consisting of various ALMs achieve superior compliant performance than counterparts comprising different orthogonal lattice microstructures (OLMs). The presented method offers a reference to optimize HLCMs, as well as promotes the theoretical development and application of the ICM method. MDPI 2022-10-19 /pmc/articles/PMC9610777/ /pubmed/36295386 http://dx.doi.org/10.3390/ma15207321 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wei, Nan
Ye, Hongling
Wang, Weiwei
Li, Jicheng
Tian, Fuwei
Sui, Yunkang
Topology Optimization for Hybrid Lattice Compliant Mechanisms with Multiple Microstructures
title Topology Optimization for Hybrid Lattice Compliant Mechanisms with Multiple Microstructures
title_full Topology Optimization for Hybrid Lattice Compliant Mechanisms with Multiple Microstructures
title_fullStr Topology Optimization for Hybrid Lattice Compliant Mechanisms with Multiple Microstructures
title_full_unstemmed Topology Optimization for Hybrid Lattice Compliant Mechanisms with Multiple Microstructures
title_short Topology Optimization for Hybrid Lattice Compliant Mechanisms with Multiple Microstructures
title_sort topology optimization for hybrid lattice compliant mechanisms with multiple microstructures
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9610777/
https://www.ncbi.nlm.nih.gov/pubmed/36295386
http://dx.doi.org/10.3390/ma15207321
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AT lijicheng topologyoptimizationforhybridlatticecompliantmechanismswithmultiplemicrostructures
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