Numerical FEA parametric analysis of CAI behaviour of CFRP stiffened panels

dc.contributor.authorGaitanelis, Dimitrios G.
dc.contributor.authorGiannopoulos, Ioannis K.
dc.contributor.authorTheotokoglou, Efstathios E.
dc.date.accessioned2019-06-11T13:56:56Z
dc.date.available2019-06-11T13:56:56Z
dc.date.issued2019-06-10
dc.description.abstractThis paper examined the effect of numerical modelling parameters on the accuracy and computational efficiency of Carbon Fibre Reinforced Polymer (CFRP) stiffened panels under Compression After Impact (CAI). Pristine and damaged CFRP stiffened panels were subjected to compression in Abaqus® software using Cohesive Zone Model (CZM) method. Various case studies were examined and the effect of the stiffness parameters of the cohesive elements was critically assessed. Moreover, the required number of cohesive zones to fully capture the damage mechanisms of the impacted and pristine panels under compressive loading was examined. The results showed that a wrong set of parameters can even lead to neglecting the induced damage and can cause severe convergence problems in the numerical model. The importance of the Overall Meshing Factor (OMF) was highlighted and a user-defined subroutine (USDFLD) was applied to capture the decrease in the load bearing capability of an impacted panel prior to the compressive loading, since CZM was found insufficient for this scope. The above-mentioned remarks illustrated the process of investigating the optimum numerical parameters set to achieve an accurate and efficient finite element modelling of the stiffened panels structural performance and maximum load-carrying capability, when subjected to CAI loading.en_UK
dc.identifier.citationGaitanelis DG, Giannopoulos IK, Theotokoglou EE. (2019) Numerical FEA parametric analysis of CAI behaviour of CFRP stiffened panels. Thin-Walled Structures, Volume 143, October 2019, Article number 106231en_UK
dc.identifier.cris23568177
dc.identifier.issn0263-8231
dc.identifier.urihttps://doi.org/10.1016/j.tws.2019.106231
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/14232
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.relation.ispartofseries;106231
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectDelaminationen_UK
dc.subjectDamage mechanicsen_UK
dc.subjectFinite element analysisen_UK
dc.subjectCohesive zone model (CZM)en_UK
dc.titleNumerical FEA parametric analysis of CAI behaviour of CFRP stiffened panelsen_UK
dc.typeArticleen_UK

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