Effects of bedding planes on the fracture characteristics of coal under dynamic loading
dc.contributor.author | Wang, W. | |
dc.contributor.author | Zhao, Y. | |
dc.contributor.author | Sun, Z. | |
dc.contributor.author | Lu, Chunsheng | |
dc.date.accessioned | 2021-08-09T10:53:54Z | |
dc.date.available | 2021-08-09T10:53:54Z | |
dc.date.issued | 2021 | |
dc.identifier.citation | Wang, 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.uri | http://hdl.handle.net/20.500.11937/85067 | |
dc.identifier.doi | 10.1016/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.language | English | |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | |
dc.subject | Science & Technology | |
dc.subject | Technology | |
dc.subject | Mechanics | |
dc.subject | Coal | |
dc.subject | Bedding planes | |
dc.subject | Dynamic loading | |
dc.subject | Fracture characteristics | |
dc.subject | SEMICIRCULAR BEND TECHNIQUE | |
dc.subject | STRAIN-GAUGE METHOD | |
dc.subject | MODE-I | |
dc.subject | TOUGHNESS ANISOTROPY | |
dc.subject | TENSILE-STRENGTH | |
dc.subject | RATE DEPENDENCE | |
dc.subject | SPECIMEN | |
dc.subject | PROPAGATION | |
dc.subject | ROCKS | |
dc.subject | PARAMETERS | |
dc.title | Effects of bedding planes on the fracture characteristics of coal under dynamic loading | |
dc.type | Journal Article | |
dcterms.source.volume | 250 | |
dcterms.source.issn | 0013-7944 | |
dcterms.source.title | Engineering Fracture Mechanics | |
dc.date.updated | 2021-08-09T10:53:53Z | |
curtin.department | School of Civil and Mechanical Engineering | |
curtin.accessStatus | Fulltext not available | |
curtin.faculty | Faculty of Science and Engineering | |
curtin.contributor.orcid | Lu, Chunsheng [0000-0002-7368-8104] | |
curtin.identifier.article-number | ARTN 107761 | |
dcterms.source.eissn | 1873-7315 | |
curtin.contributor.scopusauthorid | Lu, Chunsheng [57061177000] |