Fiber orientation in brittle materials considering post-fracture behavior

Autor(es)

da Silva, Andre Luis Ferreira ; Salas, Ruben Andres ; Moscatelli, Eduardo ; de Sa, Luis Fernando Nogueira ; Silva, Emilio Carlos Nelli

• Tipo de documento: Artigo Científico
• Fonte: COMPOSITE STRUCTURES; v. 368, p. 17-pg., 2025-09-15.

Resumo

This study presents a new framework designed to optimize fiber orientation in brittle materials, with an emphasis on post-fracture behavior. It integrates phase-field fracture modeling with topology optimization to enhance the mechanical performance of fiber-reinforced concrete by more effectively managing crack propagation. The framework utilizes a novel constitutive model based on phase-field theory, which represents damage evolution in brittle materials. The optimization process involves a multi-objective function that balances structural stiffness with damage mitigation. Numerical simulations show that the optimized fiber orientation improves fracture resistance and stiffness, even after crack initiation, thereby extending the overall durability of the structure. (AU)

• Processo FAPESP: 14/50279-4 - Brasil Research Centre for Gas Innovation
• Beneficiário: Julio Romano Meneghini
• Modalidade de apoio: Auxílio à Pesquisa - Programa Centros de Pesquisa em Engenharia
• Processo FAPESP: 20/15230-5 - Centro de Pesquisa e Inovação de Gases de Efeito Estufa - RCG2I
• Beneficiário: Julio Romano Meneghini
• Modalidade de apoio: Auxílio à Pesquisa - Programa Centros de Pesquisa em Engenharia
• Processo FAPESP: 21/02340-0 - Otimização topológica de selos labirintos considerando escoamento turbulento e interação fluido-estrutura com variáveis binárias
• Beneficiário: Eduardo Moscatelli de Souza
• Modalidade de apoio: Bolsas no Brasil - Doutorado