Composite Laminate Progressive Damage Failure Analysis Benchmarking Using High Fidelity Inspection Damage Maps for Open Hole Tension Coupons at Two Environmental Conditions

Abstract

This paper presents an approach for using high fidelity test data to inform modeling methods on progressive damage failure analysis for composite open hole tension specimens at room temperature ambient and cold temperature dry conditions. To do this, the progressive damage failure models will use a publically available continuum damage mechanics based material model (MAT299) to represent lamina level damage in unidirectional composite systems within LS-DYNA. The models will be evaluated against a high fidelity experimental database from a project sponsored by the Office of Naval Research. The database consists of experimental data for the material system IM7/5320-1. Soft, medium, and hard laminates at each environmental condition will be the focus of this paper.