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IGA-based topology optimization in the design of stress-constrained compliant mechanisms
dc.contributor.author | Villalba Rama, Diego | |
dc.contributor.author | Gonçalves, M. | |
dc.contributor.author | Dias-de-Oliveira, J. | |
dc.contributor.author | Andrade-Campos, A. | |
dc.contributor.author | Valente, R. | |
dc.date.accessioned | 2024-07-26T12:33:02Z | |
dc.date.available | 2024-07-26T12:33:02Z | |
dc.date.issued | 2023 | |
dc.identifier.citation | Villalba, Gonçalves, Dias-de-Oliveira, Andrade-Campos, Valente. (2023). IGA-based topology optimization in the design of stress-constrained compliant mechanisms. Structural and Multidisciplinary Optimization, 66(12), 244. https://doi.org/10.1007/S00158-023-03697-4 | es_ES |
dc.identifier.uri | http://hdl.handle.net/2183/38266 | |
dc.description.abstract | [Abstract:] Topology design of compliant mechanisms has gained wide popularity among the scientific community, and their use in the mechanical engineering field is being of upmost importance. In this paper, an isogeometric analysis (IGA) formulation is used to solve the topology optimization problem of compliant mechanisms. Stress constraints are introduced in the problem to guarantee the attainment of realistic solutions. For this purpose, an overweight constraint is considered for the design process, replacing the use of local stress constraints. The material distribution in the domain is modeled with quadratic B-splines and with a uniform relative density within each element of the mesh. These strategies to define the material layout are used to compare the IGA-based formulation with the finite element (FEM) formulation. The IGA formulation provides several advantages with respect to the classical FEM-based approaches that are shown and analyzed with an input-parameters sensitivity analysis. The sensitivity analysis and the assessment of the importance of introducing of stress constraints in the problem are developed by solving two benchmark problems. Regarding the sensitivity analysis of input parameters, the results show that the ratio between the material and the springs stiffnesses is the parameter with the largest influence on the solutions of the problem. Moreover, the advantages of the IGA formulations over FEM formulations are related with the computational time, the smoothness of the structural borders, and the non-appearance of the checkerboard patterns. With respect to the stress constraints, the results show that they have to be considered in order to avoid instability and structural integrity problems. | es_ES |
dc.description.sponsorship | Universidades)” through “Margarita Salas grants for the training of new PhD—2022” [RSU.UDC.MS25], by Spanish Government “(Ministerio de Ciencia e Innovación)” through “Knowledge generation projects” [PID2021-125447OB-I00] and through “Strategic projects oriented to the ecological and digital transition” [TED2021-129991B-C31], by the “Xunta de Galicia “(Consellería de Cultura, Educación, Formación Profesional y Universidades)” through “Grants for the consolidation and structuring of competitive research units of the Galician University System: Competitive reference group” [ED431C 2022/06], by Portuguese Government “(Ministério da Educação e Ciência - Fundação para a Ciência e a Tecnologia (FCT) )” through projects [UIDB/00481/2020] and [UIDP/00481/ 2020] and by Portuguese Government “(Centro Portugal Regional Operational Program (Centro2020))” under the PORTUGAL 2020 Partnership Agreement, with the European Regional Development Fund through project [CENTRO-01-0145-FEDER-022083]. | es_ES |
dc.description.sponsorship | Xunta de Galicia; ED431C 2022/06 | es_ES |
dc.description.sponsorship | Portugal. Fundação para a Ciência e a Tecnologia; UIDB/00481/2020 | es_ES |
dc.description.sponsorship | Portugal. Fundação para a Ciência e a Tecnologia; UIDP/00481/2020 | es_ES |
dc.description.sponsorship | Portugal. Centro de Tecnologia Mecânica e Automação; CENTRO-01-0145-FEDER-022083 | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Springer | es_ES |
dc.relation | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-125447OB-I00/ES/MODELOS NUMERICOS DE ALTA PRECISION PARA EL DESARROLLO DE UNA NUEVA GENERACION DE PARQUES OFFSHORE DE ENERGIA RENOVABLE | es_ES |
dc.relation | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/TED2021-129991B-C31/ES/ | es_ES |
dc.relation.uri | https://doi.org/10.1007/s00158-023-03697-4 | es_ES |
dc.rights | Atribución 3.0 España | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.subject | Topology optimization | es_ES |
dc.subject | Compliant mechanisms | es_ES |
dc.subject | Isogeometric analysis | es_ES |
dc.subject | Finite element method | es_ES |
dc.subject | Overweight constraint | es_ES |
dc.title | IGA-based topology optimization in the design of stress-constrained compliant mechanisms | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.access | info:eu-repo/semantics/openAccess | es_ES |
UDC.journalTitle | Structural and Multidisciplinary Optimization | es_ES |
UDC.volume | 66 | es_ES |
UDC.issue | 12 | es_ES |
UDC.startPage | 244 | es_ES |
dc.identifier.doi | 10.1007/S00158-023-03697-4 |
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