Abstract—The micromechanical analysis plays a very important role in the composite materials. These studies explore average mechanical properties of composites materials with good accuracy. The properties of any composite material depends on the constituents, loading, geometry, inter phase region and environmental conditions. The proposed work focus on the evaluation of properties of the fiber reinforced composite material with different volume fraction under different loading conditions. The 3D finite element model with governing boundary conditions has been developed from the unit cell of square pattern of the composite to evaluate engineering constants like, longitudinal modulus (E₁), transverse modulus (E₂), major poissons ratio (v₁₂) and minor Poisson’s ratio (v₂₁) of the fiber reinforced composites for different fiber volume fractions considering uniform and random distribution of reinforcement. The predictions of the present work are validated with analytical expressions. The present work will be useful to predict the engineering constants of uniform and random distribution of fiber in FRP composites subjected to longitudinal and transverse loading.

Index Terms—Mechanical properties, Fiber, Composite materials, Finite element method, FRP composties

Cite: Sri Chandana Buddi, P Phani Prasanthi, and P Srikanth, "Mechanical Properties of Fiber Reinforced Composites Using Finite Element Method," International Journal of Mechanical Engineering and Robotics Research, Vol. 4, No. 1, pp. 80-90, January 2015.