Predicting Macroscopic Properties of Fiber Reinforced Unidirectional Composites Based on Micro-mechanics

Firstly, the fiber reinforced unidirectional composite and micro-mechanics method were introduced. Then, Chaims model based on micro-mechanics method and the formula for calculating macroscopic mechanical properties of the fiber reinforced unidirectional composite were introduced. Besides, the method of estimating the stiffness tensor of the composite with a periodic microstructure through the Fourier series was introduced. Then, the mechanical properties of the fiber reinforced unidirectional composite including elastic modulus, the shear modulus and the Poisson's ratio were calculated. Finally, computational results of the two methods were compared with the experimental mechanical properties in the reference, which demonstrated the ability of predicting the mechanical properties of the fiber reinforced unidirectional composite. (authors)