Simulation of Impact Induced Damage Process in a Carbon/Epoxy Composite Beam

bozkurt, mirac onur
This paper presents numerical investigation of low-velocity impact (LVI) damage process in a unidirectional [0/90]s carbon/epoxy composite beam. Numerical simulations based on finite element method are conducted in ABAQUS/Explicit. A 3D model representing LVI experiments is generated. Matrix and fiber damage mechanisms are simulated by implementation of continuum damage mechanics based composite damage model with Hashin failure initiation criteria via a user-written VUMAT subroutine. Cohesive interfaces are modeled by insertion of cohesive elements between clustered plies. Bilinear traction separation law is introduced to cohesive elements for simulation of delamination damage. The results show that damage forms as a shear crack along the middle clustered 90° plies and the damage formation sequence is in good agreement with experimental results presented in the related literature. Besides, the existence of 3D effects on damage scheme in line impact event is clearly presented.
Citation Formats
m. o. bozkurt, D. ÇÖKER, and K. L. PARNAS, “Simulation of Impact Induced Damage Process in a Carbon/Epoxy Composite Beam,” presented at the 7th Asian/Australian Rotorcraft Forum (30 Ekim - 01 Kasım 2018), Juji island, Güney Kore, 2018, Accessed: 00, 2021. [Online]. Available: