Compression after impact behavior of asymmetrically tapered laminates: experimental and numerical studies

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dc.contributor.authorYu, Xiaonan
dc.contributor.authorXu, Xiwu
dc.contributor.authorHuang, Luofeng
dc.contributor.authorQin, Qing
dc.contributor.authorZhang, Chao
dc.date.accessioned2024-09-16T09:24:39Z
dc.date.available2024-09-16T09:24:39Z
dc.date.freetoread2024-09-16
dc.date.issued2024-12-01
dc.date.pubOnline2024-09-09
dc.description.abstractThis paper presents experimental and numerical studies on the compression after impact (CAI) behavior of composite tapered laminates. It introduces newly designed impact platforms and compression fixtures specifically tailored for the specimens. Drop-weight impacts are applied to the center of the specimens, and the resulting damage is briefly described. Compression tests are then conducted on both non-impacted and impacted specimens, with strain gauges used to monitor the strain distribution. Internal damage is detected using CT scanning and ultrasonic C-scan techniques. The numerical simulations are performed using ABAQUS/Explicit finite element analysis (FEA), incorporating an intra-laminar progressive damage model and an inter-laminar cohesive model, while additionally modeling resin pockets as elastomers. The simulation and experimental results indicate that before compression failure, impact damage in the thin section minimally affects the out-of-plane displacement, which is predominantly influenced by structural asymmetry. Stress concentration is observed at the junction between the thin and tapered sections in the compression test, while in the CAI test, stress concentration appears in the impact zone. The impact induces a notable shift in failure location and damage modes, resulting in decreased compressive strength, although the impact on stiffness remains minimal.
dc.description.journalNameThin-Walled Structures
dc.description.sponsorshipThis work was supported by the Natural Science Foundation of Jiangsu Province (BK20231319) and State Key Laboratory of Mechanics and Control for Aerospace Structures (Nanjing University of Aeronautics and astronautics) (MCAS-E-0124G03).
dc.identifier.citationYu X, Xu X, Huang L, et al., (2024) Compression after impact behavior of asymmetrically tapered laminates: experimental and numerical studies. Thin-Walled Structures, Volume 205, Part B, December 2024, Article number 112403
dc.identifier.elementsID552812
dc.identifier.issn0263-8231
dc.identifier.paperNo112403
dc.identifier.urihttps://doi.org/10.1016/j.tws.2024.112403
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/22908
dc.languageEnglish
dc.language.isoen
dc.publisherElsevier BV
dc.publisher.urihttps://www.sciencedirect.com/science/article/pii/S0263823124008449?via%3Dihub
dc.rightsAttribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectCivil Engineering
dc.subject4005 Civil engineering
dc.titleCompression after impact behavior of asymmetrically tapered laminates: experimental and numerical studies
dc.typeArticle
dcterms.dateAccepted2024-09-01

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