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dc.contributor.authorZohravi, Sara Ebrahimi
dc.contributor.authorLakirouhani, Ali
dc.contributor.authorMolladavoodi, Hamed
dc.contributor.authorMedzvieckas, Jurgis
dc.contributor.authorKliukas, Romualdas
dc.date.accessioned2023-09-18T16:17:39Z
dc.date.available2023-09-18T16:17:39Z
dc.date.issued2022
dc.identifier.issn1392-3730
dc.identifier.other(crossref_id)135172124
dc.identifier.urihttps://etalpykla.vilniustech.lt/handle/123456789/112877
dc.description.abstractDeformation and time-dependent behavior of rocks are closely related to the stability and safety of underground structures and mines. In this paper, a numerical-analytical model is presented to investigate time-dependent damage and deformation of rocks under creep. The proposed model is obtained by combining the elastic-visco-plastic model based on the theory of over-stress and stress hardening law with the sub-critical crack growth model. The advantage of this model is that it is in incremental form and therefore can be implemented numerically. First, the governing equations of the model and its numerical computational algorithm are described. The proposed constitutive model is then implemented in the FLAC code using the FISH function. Determination of model parameters and calibration is done by various laboratory tests performed on a type of gypsum. The creep test was performed on gypsum under a stress of 13 MPa, which is equal to 70% of its compressive strength. After determining the parameters, by fitting the creep curve of the presented analyticalnumerical model, a good agreement is observed with the creep curve obtained from the laboratory data. It is also observed that during creep, the damage parameter and wing crack length increase.eng
dc.formatPDF
dc.format.extentp. 223-231
dc.format.mediumtekstas / txt
dc.language.isoeng
dc.relation.isreferencedbyScience Citation Index Expanded (Web of Science)
dc.relation.isreferencedbyScopus
dc.relation.isreferencedbyDOAJ
dc.relation.isreferencedbyDimensions
dc.relation.isreferencedbyINSPEC
dc.relation.isreferencedbyICONDA
dc.relation.isreferencedbyProQuest Central
dc.source.urihttps://journals.vgtu.lt/index.php/JCEM/article/view/16609/11057
dc.titleA new constitutive model for the time-dependent behavior of rocks with consideration of damage parameter
dc.typeStraipsnis Web of Science DB / Article in Web of Science DB
dcterms.accessRightsThis is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
dcterms.licenseCreative Commons – Attribution – 4.0 International
dcterms.references35
dc.type.pubtypeS1 - Straipsnis Web of Science DB / Web of Science DB article
dc.contributor.institutionUniversity of Zanjan
dc.contributor.institutionAmirkabir University of Technology (Tehran)
dc.contributor.institutionVilniaus Gedimino technikos universitetas
dc.contributor.facultyStatybos fakultetas / Faculty of Civil Engineering
dc.subject.researchfieldT 002 - Statybos inžinerija / Construction and engineering
dc.subject.studydirectionE05 - Statybos inžinerija / Civil engineering
dc.subject.vgtuprioritizedfieldsSD0404 - Statinių skaitmeninis modeliavimas ir tvarus gyvavimo ciklas / BIM and Sustainable lifecycle of the structures
dc.subject.ltspecializationsL104 - Nauji gamybos procesai, medžiagos ir technologijos / New production processes, materials and technologies
dc.subject.enelastic-visco-plastic model
dc.subject.enover-stress theory
dc.subject.ensub-critical crack growth
dc.subject.encreep test
dc.subject.enstress hardening
dc.subject.enwing crack
dcterms.sourcetitleJournal of civil engineering and management
dc.description.issueiss. 3
dc.description.volumevol. 28
dc.publisher.nameVilnius Gediminas Technical University
dc.publisher.cityVilnius
dc.identifier.doi135172124
dc.identifier.doi000790130500001
dc.identifier.doi10.3846/jcem.2022.16609
dc.identifier.elaba122656396


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