Analysis of unbalanced laminate composites with imperfect interphase: Effective properties via asymptotic homogenization method

Autor(es)

Christoff, Bruno Guilherme ^[1] ; Brito-Santana, Humberto ^[2] ; Tita, Volnei ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Sao Carlos Sch Engn, Dept Aeronaut Engn, Av Joao Dagnone 1100, BR-13563120 Sao Carlos, SP - Brazil

^[2] Univ Tecnol Metropolitana, Fac Ciencias Nat Matemat & Medio Ambiente, Dept Matemat, Santiago - Chile

• Tipo de documento: Artigo Científico
• Fonte: PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS; DEC 2021.
• Citações Web of Science: 0

Resumo

This work addresses the Asymptotic Homogenization Method (AHM) to find all the non-zero independent constants of the fourth-order elasticity tensor of a theoretically infinite periodically laminated composite. The concept of Unit Cell describes the domain, comprised of two orthotropic composite plies separated by an isotropic interphase. A general case with an unbalanced composite is considered. Thus, the coupled components of the tensor are expected. Both analytical and numerical solutions are derived. In addition, an interphase degradation model is proposed to evaluate its effect on the effective properties of the media. Two different stacking sequences are considered with five degrees of interphase imperfection each. The results show good agreement between the analytical and numerical solutions. In addition, it is clear that the more imperfect the interphase is, the more affected the effective properties of the media are, especially those dependent on the stacking direction. (AU)

• Processo FAPESP: 19/15179-2 - Fabricação avançada de compósitos por enrolamento filamentar: avaliação da resistência residual de cilindros com rigidez variável após carregamento de impacto
• Beneficiário: Volnei Tita
• Modalidade de apoio: Auxílio à Pesquisa - Regular