Topology optimization with manufacturing constraints: A unified projection-based approach

Autor(es)

Vatanabe, Sandro L. ; Lippi, Tiago N. ; de Lima, Cicero R. ; Paulino, Glaucio H. ; Silva, Emilio C. N.

• Tipo de documento: Artigo Científico
• Fonte: ADVANCES IN ENGINEERING SOFTWARE; v. 100, p. 97-112, OCT 2016.
• Citações Web of Science: 22

Resumo

Despite being an effective and a general method to obtain optimal solutions, topology optimization generates solutions with complex geometries, which are neither cost-effective nor practical from a manufacturing (industrial) perspective. Manufacturing constraint techniques based on a unified projection-based approach are presented herein to properly restrict the range of solutions to the optimization problem. The traditional stiffness maximization problem is considered in conjunction with a novel projection scheme for implementing constraints. Essentially, the present technique considers a domain of design variables projected in a pseudo-density domain to find the solution. The relation between both domains is defined by the projection function and variable mappings according to each constraint of interest. The following constraints have been implemented: minimum member size, minimum hole size, symmetry, pattern repetition, extrusion, turning, casting, forging and rolling. These constraints illustrate the ability of the projection scheme to efficiently control the optimization solution (i.e. without adding a large computational cost). Illustrative examples are provided in order to explore the manufacturing constraints in conjunction with the unified projection-based approach. (C) 2016 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 08/57086-6 - Projeto de materiais piezocompositos baseados no conceito de gradacao funcional utilizando o metodo de otimizacao topologica
• Beneficiário: Sandro Luis Vatanabe
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 15/08316-2 - Projeto de Materiais com Propriedades Extremas Através do Método de Otimização Topológica e Técnicas de Prototipagem Rápida
• Beneficiário: Cícero Ribeiro de Lima
• Modalidade de apoio: Bolsas no Exterior - Pesquisa