Probabilistic Analysis for the Mechanical Properties of Cross-Ply Fiber- Reinforced Composite Laminate (Postprint)

摘要

A probabilistic micromechanics model has been developed for the unidirectional fiber-reinforced composite material design screening. This model provides a design-screening tool to help material producers eliminate the unnecessary time-consuming and costly material fabrications and to reduce the numbers of testing to a minimum, but enough to verify the model prediction. Consequently, it provides a means to accelerate the insertion of materials into AF productions. To include the material design in the structural design process, we extended the probabilistic analysis to predict the probability density functions for the off-axis transformed reduced stiffness, Young's modulus, transverse Young's modulus, shear modulus and Poisson's ratio. In this report we will focus on the probabilistic analysis of symmetric and anti-symmetric regular cross-ply laminates of IM-7/520-4 fiber-reinforced composite with odd- number plies parallel to and even-number plies perpendicular to the laminate principal axes.