Abstract
A novel method involving the use of micromechanical analysis to predict elastic constants of a unidirectional fiber-reinforced composite is proposed. The method revolves around a model called the two-parameter model. The two parameters are obtained by performing one micromechanical analysis of the composite unit cell along one of its transverse directions. The method involves construction of response surfaces that act as surrogate models, for the prediction of the two parameters, corresponding to any fiber-reinforced composite design that uses a transversely isotropic fiber and an isotropic matrix. Using the two parameters, four of the five elastic constants can be computed. The fifth elastic constant, longitudinal shear modulus, is predicted using a separate response surface. The results indicate that the two-parameter model in conjunction with the response surface makes accurate prediction of composite elastic constants.
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