Title: A new damage model for composite laminates
Authors: Leite Ribeiro, Marcelo ×
Volnei, Tita
Vandepitte, Dirk #
Issue Date: Jan-2012
Publisher: Applied Science Publishers
Series Title: Composite Structures vol:94 issue:2 pages:635-642
Abstract: Aircraft composite structures must have high stiffness and strength with low weight, which can guarantee
the increase of the pay-load for airplanes without losing airworthiness. However, the mechanical
behavior of composite laminates is very complex due the inherent anisotropy and heterogeneity. Many
researchers have developed different failure progressive analyses and damage models in order to predict
the complex failure mechanisms. This work presents a damage model and progressive failure analysis
that requires simple experimental tests and that achieves good accuracy. Firstly, the paper explains damage
initiation and propagation criteria and a procedure to identify the material parameters. In the second
stage, the model was implemented as a UMAT (User Material Subroutine), which is linked to finite element
software, ABAQUS™, in order to predict the composite structures behavior. Afterwards, some case
studies, mainly off-axis coupons under tensile or compression loads, with different types of stacking
sequence were analyzed using the proposed material model. Finally, the computational results were
compared to the experimental results, verifying the capability of the damage model in order to predict
the composite structure behavior.
ISSN: 0263-8223
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Production Engineering, Machine Design and Automation (PMA) Section
× corresponding author
# (joint) last author

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