Different interface models for calculating the effective properties in piezoelectric composite materials with imperfect fiber-matrix adhesion

Autor(es)

Brito-Santana, Humberto ^[1] ; de Medeiros, Ricardo ^[1] ; Rodriguez-Ramos, Reinaldo ^[2] ; Tita, Volnei ^[1]

Afiliação do(s) autor(es)

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

^[2] Univ La Habana, Fac Matemat & Comp, Dept Matemat, Vedado 10400 4, Habana - Cuba

• Tipo de documento: Artigo Científico
• Fonte: COMPOSITE STRUCTURES; v. 151, p. 70-80, SEP 1 2016.
• Citações Web of Science: 11

Resumo

Piezoelectric materials are able to produce an electrical response when mechanically stressed (sensors) and inversely high precision motion can be obtained with the application of an electrical field (actuators). The macroscopic properties of piezoelectric composites depend upon the properties and the interfacial bonding conditions of the constituent phases, and the microstructures of the composites. In the present work, a new imperfect interface model for a thin elastic interface is derived. Square unit cell model was used to calculate all coefficients of the material tensor. The calculation was performed via FE package ABAQUSTM. A computational procedure, based on Python language, was developed to systematically calculate all RVE effective coefficients. Comparisons to classical Hashin's and Nairn's interface model show very accurate agreement for debonding and perfect boding interface. (C) 2016 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 12/01047-8 - Desenvolvimento de um critério para previsão da resistência residual de estruturas em material compósito danificadas por impacto
• Beneficiário: Ricardo de Medeiros
• Modalidade de apoio: Bolsas no Brasil - Doutorado