A Novel, Multiscale High Fidelity Progressive Damage and Failure Modeling Approach for Laminated Fiber Reinforced Composites

摘要

A variable fidelity, multiscale, physics based finite element procedure for predicting progressive damage and failure in laminated continuous fiber reinforced composites is introduced. At every integration point in a finite element model, progressive mi-crodamage is modeled at the lamina-level using thermodynamically based Schapery Theory. Transverse cracking and fiber failure are accounted for via failure criteria evaluated at the mirco-level. A micromechanics model, the Generalized Method of Cells, is used to calculate the stresses in the constituents of the composite and a modified Hashin-Rotem failure criterion is employed. The stress-strain behavior and observed failure mechanisms are compared with experimental results for both models.