59th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference The Effects of RVE Size and Fiber Packing on the Transverse Tensile Response of Fiber Reinforced Composites

摘要

We address the effects of RVE size and fiber packing on the tensile response of fiber reinforced composites in the context of Integrated Computational Materials Engineering (ICME). Using micromechanics, different sizes of RVEs with random packing of fibers that preserve a fixed volume fraction are virtually cured and then subjected to mechanical loading programs. Salient features of the response are analyzed to determine the effects of packing and RVE size on the details of crack path, maximum load and overall fracture toughness. Provision for damage accumulation/cracking in the matrix is made possible via the Bazant-Oh crack band model.