Journal
COMPOSITE STRUCTURES
Volume 190, Issue -, Pages 127-136Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2018.01.085
Keywords
Composite materials; Mode II delamination; Friction effects; Numerical simulation; Four-point End-Notched Flexure test
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Funding
- University of Pisa
- LMAF/EPFL
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In this paper the attention has been focused on the evaluation of how friction can influence Four-point End-Notched Flexure test in carbon fibre-epoxy composite materials. The starting point has been the hysteresis loop in the experimentally obtained Load versus Displacement curve due to an unloading-loading cycle. Different locations for friction have been considered. Numerical simulations have been performed by using Finite Elements and an experimental test campaign has been also carried out to validate the model and to optimize friction coefficients through the comparison with test results. The outcomes of the numerical analysis have given useful indications. Firstly, the comparison of the simulated maximum load and dissipated energy with those coming from the experimental tests has given good results. Secondly, it has been found that the contact between pins and specimens is the most significant location for friction.
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