Soft body impact on composites: delamination experiments and advanced numerical modelling

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dc.contributor.authorSelvaraj, Jagan
dc.contributor.authorKawashita, Luiz F.
dc.contributor.authorKalwak, Gordon
dc.contributor.authorHallett, Stephen R.
dc.date.accessioned2021-03-30T12:46:52Z
dc.date.available2021-03-30T12:46:52Z
dc.date.issued2021-03-20
dc.description.abstractCohesive interface elements have become commonly used for modelling composites delamination. However, a limitation of this technique is the fine mesh size required. Here, a novel cohesive element formulation is proposed and demonstrated for modelling the numerical cohesive zone with equal fidelity but fewer elements in comparison to a linear cohesive element formulation. The newly proposed formulation has additional degrees of freedom in the form of nodal rotations which when combined with the use of multiple integration points per cohesive element, allows for delamination propagation to be modelled with increased stability. This element formulation is introduced with an adaptive modelling method, termed Adaptive Mesh Segmentation (AMS). To demonstrate its effectiveness under impact loading the new model is applied to a soft body beam bending test. This test, containing a delamination pre-crack, uses inertial constraints and results in a dynamic stress state when impacted by a gelatin cylinder.en_UK
dc.identifier.citationSelvaraj J, Kawashita LF, Yasaee M, et al., (2021) Soft body impact on composites: delamination experiments and advanced numerical modelling. Composites Science and Technology, Volume 208, May 2021, Article number 108777en_UK
dc.identifier.issn0266-3538
dc.identifier.urihttps://doi.org/10.1016/j.compscitech.2021.108777
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/16518
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectCohesive element formulationen_UK
dc.subjectFinite element analysis (FEA)en_UK
dc.subjectDelaminationen_UK
dc.subjectImpact behaviouren_UK
dc.titleSoft body impact on composites: delamination experiments and advanced numerical modellingen_UK
dc.typeArticleen_UK

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