Theoretical models to predict the mechanical behavior of thick composite tubes

Autor(es)

Volnei Tita ^[1] ; Mauricio Francisco Caliri Júnior ^[2] ; Ernesto Massaroppi Junior ^[3]

Afiliação do(s) autor(es)

^[1] University of São Paulo. Engineering School of São Carlos. Department of Aeronautical Engineering - Brasil

^[2] University of São Paulo. Engineering School of São Carlos. Department of Aeronautical Engineering - Brasil

^[3] University of São Paulo. Engineering School of São Carlos. Department of Mechanical Engineering - Brasil

• Tipo de documento: Artigo Científico
• Fonte: MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 15, n. 1, p. 70-80, 2011-11-29.

Resumo

This paper shows theoretical models (analytical formulations) to predict the mechanical behavior of thick composite tubes and how some parameters can influence this behavior. Thus, firstly, it was developed the analytical formulations for a pressurized tube made of composite material with a single thick ply and only one lamination angle. For this case, the stress distribution and the displacement fields are investigated as function of different lamination angles and reinforcement volume fractions. The results obtained by the theoretical model are physic consistent and coherent with the literature information. After that, the previous formulations are extended in order to predict the mechanical behavior of a thick laminated tube. Both analytical formulations are implemented as a computational tool via Matlab code. The results obtained by the computational tool are compared to the finite element analyses, and the stress distribution is considered coherent. Moreover, the engineering computational tool is used to perform failure analysis, using different types of failure criteria, which identifies the damaged ply and the mode of failure. (AU)

• Processo FAPESP: 09/00544-5 - Estudo de modelos de dano e falha progressiva para estruturas em materiais compósitos
• Beneficiário: Volnei Tita
• Modalidade de apoio: Auxílio à Pesquisa - Regular