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A Direct Evaluation of Stress Intensity Factors Using the Extended Dual Boundary Element Method
| Content Provider | Semantic Scholar |
|---|---|
| Author | Trevelyan, Jon |
| Copyright Year | 2016 |
| Abstract | We introduce an alternative method in computational fracture mechanics to evaluate Stress Intensity Factors (SIFs) directly using the Extended Dual Boundary Element Method (XBEM) for 2D problems. Like other enrichment approaches, the new approach is able to yield accurate results on coarse discretisations, and the enrichment increases the problem size by only two degrees of freedom per crack tip. The BEM equations formed by collocation at nodes are augmented by two additional equations that enforce continuity of displacement at the crack tip. The enrichment approach provides the values of SIFs KI and KII directly in the solution vector and without any need for postprocessing such as the J-integral. Numerical examples are used to compare the accuracy of these directly computed SIFs to J-integral processing of both conventional and enriched boundary element approximations. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://dro.dur.ac.uk/17167/1/17167.pdf?DDD10+des0jt+d700tmt |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | ALYREF gene Algorithmic efficiency Analysis of algorithms Approximation Binary prefix Boundary element method Business continuity Collocation Computation Converge Direct method in the calculus of variations Displacement mapping Dual Gene Ontology Term Enrichment Mechanics Polynomial Psychologic Displacement Scott continuity Singular |
| Content Type | Text |
| Resource Type | Article |
