Damage Simulation in Non-Crimp Fabric Composite Plates Subjected to Impact LoadsProgressive failure analysis (PFA) of non-crimp fabric (NCF) composite laminates subjected to low velocity impact loads was performed using the COmplete STress Reduction (COSTR) damage model implemented through VUMAT and UMAT41 user subroutines in the frame works of the commercial finite element programs ABAQUS/Explicit and LS-DYNA, respectively. To validate the model, low velocity experiments were conducted and detailed correlations between the predictions and measurements for both intra-laminar and inter-laminar failures were made. The developed material and damage model predicts the peak impact load and duration very close with the experimental results. Also, the simulation results of delamination damage between the ply interfaces, in-plane matrix damages and fiber damages were all in good agreement with the measurements from the non-destructive evaluation data.
Document ID
20140016389
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Satyanarayana, Arunkumar (Analytical Mechanics Associates, Inc. Hampton, VA, United States)
Bogert, Philip B. (NASA Langley Research Center Hampton, VA, United States)
Aitharaju, Venkat (General Motors Corp. Pontiac, MI, United States)
Aashat, Satvir (General Motors Corp. Pontiac, MI, United States)
Kia, Hamid (General Motors Corp. Pontiac, MI, United States)