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Abstract

A quadratic isoparametric finite element formulation based on the first-order shear deformation theory is presented for the initial failure analysis of a laminated composite plate exposed to moist conditions. The moisture concentration causing the failure of composite laminate has been predicted in the present study. An iteration method has been developed for the prediction of moisture concentration for the weakest ply failure of laminated composite plates. Several numerical examples are considered and the results are compared with those available in the published literature. The moisture concentration for the starting of failure has been computed for cross-ply and angle-ply laminations with various boundary conditions, taking into account the moisture independence of the materials properties.

Keywords

moisture concentration finite element method composite first-ply failure failure criteria

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References

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Initial Failure Analysis of Laminated Composite Plates under Humid Conditions

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