Analysis of unbalanced laminate composites with imperfect interphase: Effective properties via asymptotic homogenization method
Abstract
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Dec 13, 2021
- Source ID
- 10.1177/14644207211060004
Entities
People
- Bruno Guilherme Christoff
- Humberto Brito-santana
- Volnei Tita
Organizations
- Air Force Office of Scientific Research
- Coordenação de Aperfeicoamento de Pessoal de Nível Superior
- Metropolitan University of Technology
- National Council for Scientific and Technological Development
- São Paulo Research Foundation
- University of São Paulo