Finite element analysis of concrete slab exposed to high velocity pressure wave – simplified vs. smoothed-particle hydrodynamics (SPH) method

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dc.contributor.authorJindra, Danielcs
dc.contributor.authorHradil, Petrcs
dc.contributor.authorKala, Jiřícs
dc.coverage.issue1cs
dc.coverage.volume396cs
dc.date.accessioned2025-02-03T14:45:41Z
dc.date.available2025-02-03T14:45:41Z
dc.date.issued2024-05-24cs
dc.description.abstractMany structures are required to sustain the structural resistance also under extreme loading conditions, for example impacts of high-velocity objects (airplane crash into nuclear power plant), impacts of projectiles (defence structures), or while exposed to high velocity pressure wave caused e.g. by explosion of various chemicals in industry, nature gas, or also conventional weapons. Numerical analyses of these phenomena are feasible while utilizing explicit approach of the finite element method (FEM), available in commercially accessible software LS-Dyna. In order to predict the behaviour of the structure properly, advanced nonlinear material models are required to be considered, which are often mathematically described by numerous input parameters. Several approaches to model the exposure to blast load exist, from simplified, where the blast wave is considered as timedependent pressure based on empirical equations, to more advanced ones, where the propagation of the pressure wave itself through the surrounding environment is being modelled Arbitrary Lagrangian Eulerian, (ALE method), or so called smoothed-particle hydrodynamics (SPH) method, which might be used to model the blast itself. In this paper, FEM analyses of a simply supported concrete slab with basalt fibre reinforced polymer (BFRP) bars exposed to close range explosion of TNT charge are presented. 3D numerical models are analysed utilizing explicit solver of LS-Dyna. Karagozian and Case (K&C) nonlinear material model for concrete is used, which is suitable when high strain rates are present in the quasi brittle materials. Two variants of the blast loads modelling are compared. The simplified empirical approach, which is less demanding on computational power, and feasible for utilization in case of simple structure geometry, and more demanding method using SPH method to model the TNT detonation and interaction with the exposed concrete slab. The results of these numerical analyses are compared with experimental data based on available literature, and properly discussed.en
dc.formattextcs
dc.format.extent1-13cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationMATEC Web of Conferences. 2024, vol. 396, issue 1, p. 1-13.en
dc.identifier.doi10.1051/matecconf/202439605005cs
dc.identifier.issn2261-236Xcs
dc.identifier.orcid0000-0002-9512-2558cs
dc.identifier.orcid0000-0002-3915-9399cs
dc.identifier.orcid0000-0002-8250-8515cs
dc.identifier.other189866cs
dc.identifier.researcheridE-6326-2019cs
dc.identifier.scopus8525142300cs
dc.identifier.urihttps://hdl.handle.net/11012/249941
dc.language.isoencs
dc.publisherEDP Sciencescs
dc.relation.ispartofMATEC Web of Conferencescs
dc.relation.urihttps://www.matec-conferences.org/articles/matecconf/abs/2024/08/matecconf_wmcaus2023_05005/matecconf_wmcaus2023_05005.htmlcs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2261-236X/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectConcreteen
dc.subjectSPHen
dc.subjectfinite element analysisen
dc.subjectimpact loadingen
dc.titleFinite element analysis of concrete slab exposed to high velocity pressure wave – simplified vs. smoothed-particle hydrodynamics (SPH) methoden
dc.type.driverconferenceObjecten
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-189866en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:45:41en
sync.item.modts2025.01.29 16:32:06en
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav stavební mechanikycs
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