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This and the next 5 images are from:
Aniello Riccio (2), Francesco Di Caprio (1), Francesco Scaramuzzino (2), Andrea Sellitto (2) and Mauro Zarrelli (3)
(1) Aerostructural Design and Dynamic Laboratory, Italian Aerospace Research Center (CIRA), Capua (CE), Italy
(2) Department of Industrial and Informatics Engineering, Second University of Naples, Aversa (CE), Italy
(3) Institute for Composite and Biomedical Materials, National Research Council (CNR), Portici (NA), Italy
“Stiffened panels damage tolerance determination using an optimization procedure based on a linear delamination growth approach”, American Journal of Engineering and Applied Sciences, Vol. 9, No. 4, pp 1301-1317, 2016, DOI: 10.3844/ajeassp.2016.1301.1317
ABSTRACT: The damage tolerance of delaminated composite panels under compressive load is usually numerically evaluated by means of computationally expensive non-linear approaches. In this study, an alternative numerical linear approach, able to mimic the delamination propagation initiation, is proposed. With the aim to exploit its benefits, in terms of computational costs reduction, the proposed linear methodology has been used in this study in conjunction with an optimization analysis to assess the damage tolerance of stiffened composite panels with an impact induced delamination under compression. Indeed, the optimization was aimed to find the minimum delamination growth initiation load for a delaminated stiffened panel with variable delamination size and position, providing indications on the damage tolerance capability of the stiffened panel with an arbitrary positioned and sized delamination induced (as an example) by a low energy impact.
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