Validated Cohesive Zone Models for Epoxy-Based Adhesive Joints between Steel and CFRP Composites for Multimaterial Structural Design in Transportation Applications

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dc.contributor.authorŠpirk, Stanislav
dc.contributor.authorKalina, Tomáš
dc.date.accessioned2026-02-11T10:43:40Z
dc.date.available2026-02-11T10:43:40Z
dc.date.issued2025
dc.description.abstract-translatedThis study presents the development, calibration, and validation of cohesive zone models (CZMs) for epoxy-based adhesive joints connecting stainless steel and CFRP composites. The objective of this study is to develop and rigorously validate cohesive zone models for epoxy-based adhesive joints between stainless steel and CFRP composites, ensuring their reliability for numerical simulations of structural failure under quasi-static and large-deformation conditions. The work focuses on accurately describing the quasi-static behaviour and failure mechanisms of hybrid adhesive interfaces, which are crucial for multimaterial structures in modern transportation systems. Experimental tests in Mode I (DCB) and Mode II (ENF) configurations were performed to determine the cohesive paramatters of the structural adhesive SikaPower 1277. The obtained data were further analysed through analytical formulations and validated numerically using PAM-CRASH. Excellent agreement was achieved between experiments, analytical predictions, and simulations, confirming the reliability of the proposed material definitions under large deformations. The validated models were subsequently implemented in a large-scale numerical simulation of a bus rollover according to UN/ECE Regulation No. 66, demonstrating their applicability to real structural components. The results show that the developed cohesive zone models enable accurate prediction of failure initiation and propagation in adhesive joints between dissimilar materials. These findings provide a robust foundation for the design of lightweight, crashworthy structures in transportation and open new perspectives for integrating epoxy-based adhesives into additively manufactured hybrid metal–composite systems.en
dc.description.sponsorshipCZ.02.01.01/00/23_021/0008433
dc.format25 s.cs
dc.identifier.issn2073-4360
dc.identifier.urihttp://hdl.handle.net/11025/64670
dc.language.isoenen
dc.publisherMDPIen
dc.rights© authorsen
dc.rights.accessopenAccessen
dc.subjectepoxidové lepidlocs
dc.subjectmodel kohezní zónycs
dc.subjectPAM-Crashcs
dc.subjectspoj ocel- CFRPcs
dc.subjecthybridní konstrukcecs
dc.subjectbezpečnost dopravycs
dc.subject.translatedepoxy adhesiveen
dc.subject.translatedcohesive zone modelen
dc.subject.translatedpam-crashen
dc.subject.translatedsteel-cfrp jointen
dc.subject.translatedhybrid structureen
dc.subject.translatedtransportation safetyen
dc.titleValidated Cohesive Zone Models for Epoxy-Based Adhesive Joints between Steel and CFRP Composites for Multimaterial Structural Design in Transportation Applicationsen
dc.typepreprinten
dc.typepreprintcs
dc.type.versiondraften
local.files.count1*
local.files.size2855865*
local.has.filesyes*

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