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Failure Stress Analysis of Fiber Reinforced of Composite Laminates under Uniaxial/Biaxial Loading
Z. Hasan[1], F. Darwish[2], and S. Al-Absi[2][1]Texas A&M University, College Station, TX, USA
[2]Jordan University of Science and Technology, Irbid, Jordan
The main objective of the present work is to perform stress analysis on composite laminates under unaxial/biaxial loading to serve as a preliminary data for test verification. A detailed calculation based on the Classical Lamination Theory was performed for a laminate. The material used was carbon/epoxy applying a pure uniaxial load followed by a biaxial load. It was observed that the failure occured in the 90º ply when applying a uniaxial load while the failure occured in the 45º / -45º plies in the biaxial case which obtain the least resistance. The finite element software COMSOL Multiphysics was used to model the geometry, material, loading conditions, and to perform the stress analysis to validate the output results of the analysis. A computer software was also developed that enables the user to study any general composite layup including hybrid composites under uniaxial/biaxial loading conditions .
