Please use this identifier to cite or link to this item: https://doi.org/10.1142/S0219876210002131
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dc.titleA novel general formulation for singular stress field using the ES-FEM method for the analysis of mixed-mode cracks
dc.contributor.authorLiu, G.R.
dc.contributor.authorNourbakhshnia, N.
dc.contributor.authorChen, L.
dc.contributor.authorZhang, Y.W.
dc.date.accessioned2014-04-24T09:30:17Z
dc.date.available2014-04-24T09:30:17Z
dc.date.issued2010-03
dc.identifier.citationLiu, G.R., Nourbakhshnia, N., Chen, L., Zhang, Y.W. (2010-03). A novel general formulation for singular stress field using the ES-FEM method for the analysis of mixed-mode cracks. International Journal of Computational Methods 7 (1) : 191-214. ScholarBank@NUS Repository. https://doi.org/10.1142/S0219876210002131
dc.identifier.issn02198762
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/51305
dc.description.abstractThis paper presents a general formulation for simulating the singular stress field at the vicinity of the crack-tip for linear fracture mechanics problems, based on the edge-based smoothed finite element method (ES-FEM) settings. This novel "singular ES-FEM" makes use of the unique feature offered by the ES-FEM that only the assumed displacement values (not the derivatives) are required to compute the stiffness matrix of the discretized system. The present singular ES-FEM method uses a basic mesh of linear triangular elements and a layer of novel "five-noded crack-tip elements" sharing the crack-tip node. The five-noded crack-tip element has one additional node on each of the edges connected to the crack-tip, and the locations of the "edge-node" can be arbitrary. A number of examples are analyzed and the results demonstrate that the present singular ES-FEM is generally softer and much more accurate than the existing FEM. The stress intensity factors obtained using the singular ES-FEM are very stable for different area-integration paths designed around the crack-tip. The present singular ES-FEM is found an excellent alternative to the standard FEM for fracture problems. © 2010 World Scientific Publishing Company.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1142/S0219876210002131
dc.sourceScopus
dc.subjectMesh free method
dc.subjectMixed mode crack problems
dc.subjectSingular smoothed finite element method
dc.subjectSmoothed finite element method
dc.typeArticle
dc.contributor.departmentMECHANICAL ENGINEERING
dc.contributor.departmentINTERACTIVE & DIGITAL MEDIA INSTITUTE
dc.contributor.departmentMATERIALS SCIENCE AND ENGINEERING
dc.description.doi10.1142/S0219876210002131
dc.description.sourcetitleInternational Journal of Computational Methods
dc.description.volume7
dc.description.issue1
dc.description.page191-214
dc.identifier.isiut000276672200009
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