A Dimensionless Mathematical Model for Studying the Physical Parameters of Composite Laminates - Part II

In this article, a dimensionless mathematical model for studying the physical parameters of a quasi-isotropic composite laminate is presented. The influence of the various lamina material properties E ₁ , E ₂ , E ₃ , G ₁₂ , 12, 31, 32 as well as the lamina hygrothermal expansion coefficients 1, 2, 3, 1, 2, and 3 on the physical parameters of the laminate such as the through-the-thickness Poisson’s ratio z, the dilatation D" _z of the laminate, the coefficients of hygrothermal expansion of the laminate, and, and the through-thickness coefficients of hygrothermal expansion of the laminate z, and z are studied. The results from this dimensionless mathematical model provide a set of general guidelines for designing the physical parameters of the composite laminates to fit various working and environmental conditions in engineering application.