Level-set based topology optimization considering milling directions via fictitious physical model

Topology optimization is the most flexible structural optimization method that allows the topological modification as well as the shape changes. Topology optimization techniques have recently been utilized in engineering applications regarding multi-physics or multi-disciplinary optimization. The ma...

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Autores principales:	Doe YOUNG HUR, Yuki SATO, Takayuki YAMADA, Kazuhiro IZUI, Shinji NISHIWAKI
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2020
Materias:	manufacturability topology optimization geometric constraint design optimization Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/0164d6936b6040e5ae0826363e1527f3
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spelling	oai:doaj.org-article:0164d6936b6040e5ae0826363e1527f32021-11-29T06:02:35ZLevel-set based topology optimization considering milling directions via fictitious physical model2187-974510.1299/mej.20-00226https://doaj.org/article/0164d6936b6040e5ae0826363e1527f32020-10-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/7/6/7_20-00226/_pdf/-char/enhttps://doaj.org/toc/2187-9745Topology optimization is the most flexible structural optimization method that allows the topological modification as well as the shape changes. Topology optimization techniques have recently been utilized in engineering applications regarding multi-physics or multi-disciplinary optimization. The manufacturing evaluation is an important factor for the practical application to the field of industry. For example, conventional manufacturing processes such as molding and casting, require fulfillment of specific geometric conditions due to the path of the tools. To obtain the optimal structures satisfying such conditions, a new level set-based topology optimization method, based on the convection-diffusion equations with fictions fluxes, are utilized to impose the geometric constrains regarding manufacturability, has been developed. In this method, handling geometric constraints for the manufacturability depends on the fictitious heat fluxes. The propagation of the fictitious fluxes distinguishes the non-manufacturable domain. However, in previous approaches, the manufacturing directions are regarded as design parameters where the values are fixed before the optimization procedure. As the non-manufacturable domain is dominated by the path of the manufacturing tools, the appropriate selection of these parameter values is necessary to obtain the optimal design with the best manufacturability constraints. Thus, these parameters should be appropriately set during the optimization process. In this method, we develop a new topology optimization method where the manufacturing directions are also considered as design variables. A sensitivity analysis based on the adjoint equation is introduced to obtain optimized manufacturing directions. Several engineering applications are introduced and optimized through the new method and the previous methods to confirm the availability of the proposed method.Doe YOUNG HURYuki SATOTakayuki YAMADAKazuhiro IZUIShinji NISHIWAKIThe Japan Society of Mechanical Engineersarticlemanufacturabilitytopology optimizationgeometric constraintdesign optimizationMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 7, Iss 6, Pp 20-00226-20-00226 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	manufacturability topology optimization geometric constraint design optimization Mechanical engineering and machinery TJ1-1570
spellingShingle	manufacturability topology optimization geometric constraint design optimization Mechanical engineering and machinery TJ1-1570 Doe YOUNG HUR Yuki SATO Takayuki YAMADA Kazuhiro IZUI Shinji NISHIWAKI Level-set based topology optimization considering milling directions via fictitious physical model
description	Topology optimization is the most flexible structural optimization method that allows the topological modification as well as the shape changes. Topology optimization techniques have recently been utilized in engineering applications regarding multi-physics or multi-disciplinary optimization. The manufacturing evaluation is an important factor for the practical application to the field of industry. For example, conventional manufacturing processes such as molding and casting, require fulfillment of specific geometric conditions due to the path of the tools. To obtain the optimal structures satisfying such conditions, a new level set-based topology optimization method, based on the convection-diffusion equations with fictions fluxes, are utilized to impose the geometric constrains regarding manufacturability, has been developed. In this method, handling geometric constraints for the manufacturability depends on the fictitious heat fluxes. The propagation of the fictitious fluxes distinguishes the non-manufacturable domain. However, in previous approaches, the manufacturing directions are regarded as design parameters where the values are fixed before the optimization procedure. As the non-manufacturable domain is dominated by the path of the manufacturing tools, the appropriate selection of these parameter values is necessary to obtain the optimal design with the best manufacturability constraints. Thus, these parameters should be appropriately set during the optimization process. In this method, we develop a new topology optimization method where the manufacturing directions are also considered as design variables. A sensitivity analysis based on the adjoint equation is introduced to obtain optimized manufacturing directions. Several engineering applications are introduced and optimized through the new method and the previous methods to confirm the availability of the proposed method.
format	article
author	Doe YOUNG HUR Yuki SATO Takayuki YAMADA Kazuhiro IZUI Shinji NISHIWAKI
author_facet	Doe YOUNG HUR Yuki SATO Takayuki YAMADA Kazuhiro IZUI Shinji NISHIWAKI
author_sort	Doe YOUNG HUR
title	Level-set based topology optimization considering milling directions via fictitious physical model
title_short	Level-set based topology optimization considering milling directions via fictitious physical model
title_full	Level-set based topology optimization considering milling directions via fictitious physical model
title_fullStr	Level-set based topology optimization considering milling directions via fictitious physical model
title_full_unstemmed	Level-set based topology optimization considering milling directions via fictitious physical model
title_sort	level-set based topology optimization considering milling directions via fictitious physical model
publisher	The Japan Society of Mechanical Engineers
publishDate	2020
url	https://doaj.org/article/0164d6936b6040e5ae0826363e1527f3
work_keys_str_mv	AT doeyounghur levelsetbasedtopologyoptimizationconsideringmillingdirectionsviafictitiousphysicalmodel AT yukisato levelsetbasedtopologyoptimizationconsideringmillingdirectionsviafictitiousphysicalmodel AT takayukiyamada levelsetbasedtopologyoptimizationconsideringmillingdirectionsviafictitiousphysicalmodel AT kazuhiroizui levelsetbasedtopologyoptimizationconsideringmillingdirectionsviafictitiousphysicalmodel AT shinjinishiwaki levelsetbasedtopologyoptimizationconsideringmillingdirectionsviafictitiousphysicalmodel
_version_	1718407565676642304

Level-set based topology optimization considering milling directions via fictitious physical model

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