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dc.contributor.authorWang, W.
dc.contributor.authorZhao, Y.
dc.contributor.authorSun, Z.
dc.contributor.authorLu, Chunsheng
dc.date.accessioned2021-08-09T10:53:54Z
dc.date.available2021-08-09T10:53:54Z
dc.date.issued2021
dc.identifier.citationWang, W. and Zhao, Y. and Sun, Z. and Lu, C. 2021. Effects of bedding planes on the fracture characteristics of coal under dynamic loading. Engineering Fracture Mechanics. 250: Article No. 107761.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/85067
dc.identifier.doi10.1016/j.engfracmech.2021.107761
dc.description.abstract

To investigate the influence of bedding planes on its fracture characteristics under dynamic loading, testing and numerical simulations are carried out on semi-circular bend specimens of coal. It is shown that the fracture load and dynamic initiation fracture toughness decrease as the increase of bedding-plane angle. The crack propagation direction is jointly controlled by the maximum principal stress and bedding planes. Based on the digital speckle correlation method, it is found out that, due to stress concentration, strain at the initial loading stage concentrates around crack tip. After crack initiation, there is a specific strain gradient with a candle flame-like shape on the surface of a specimen. The opening displacements at crack tip can be divided into stable and linearly increasing phases. Further, a continuum-based discrete element method is applied to virtually reproduce these fracture characteristics, which are instructive to study dynamic anisotropy in fracture of coal.

dc.languageEnglish
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD
dc.subjectScience & Technology
dc.subjectTechnology
dc.subjectMechanics
dc.subjectCoal
dc.subjectBedding planes
dc.subjectDynamic loading
dc.subjectFracture characteristics
dc.subjectSEMICIRCULAR BEND TECHNIQUE
dc.subjectSTRAIN-GAUGE METHOD
dc.subjectMODE-I
dc.subjectTOUGHNESS ANISOTROPY
dc.subjectTENSILE-STRENGTH
dc.subjectRATE DEPENDENCE
dc.subjectSPECIMEN
dc.subjectPROPAGATION
dc.subjectROCKS
dc.subjectPARAMETERS
dc.titleEffects of bedding planes on the fracture characteristics of coal under dynamic loading
dc.typeJournal Article
dcterms.source.volume250
dcterms.source.issn0013-7944
dcterms.source.titleEngineering Fracture Mechanics
dc.date.updated2021-08-09T10:53:53Z
curtin.departmentSchool of Civil and Mechanical Engineering
curtin.accessStatusFulltext not available
curtin.facultyFaculty of Science and Engineering
curtin.contributor.orcidLu, Chunsheng [0000-0002-7368-8104]
curtin.identifier.article-numberARTN 107761
dcterms.source.eissn1873-7315
curtin.contributor.scopusauthoridLu, Chunsheng [57061177000]


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