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dc.contributor.author Andhavarapu, EV
dc.contributor.author Loveday, P
dc.contributor.author Long, CS
dc.contributor.author Heyns, PS
dc.date.accessioned 2011-11-30T07:44:47Z
dc.date.available 2011-11-30T07:44:47Z
dc.date.issued 2010-01
dc.identifier.citation Andhavarapu, EV, Loveday, P, Long, CS and Heyns, PS. 2010. Accuracy of semi-analytical finite elements for modelling wave propagation in rails. Seventh South African Conference on Computational and Applied Mechanics (SACAM10), University of Pretoria, 10-13 January 2010 en_US
dc.identifier.uri http://hdl.handle.net/10204/5347
dc.description Seventh South African Conference on Computational and Applied Mechanics (SACAM10), University of Pretoria, 10-13 January 2010 en_US
dc.description.abstract The semi-analytical finite element method (SAFE) is a popular method for analysing guided wave propagation in elastic waveguides of complex cross-section such as rails. The convergence of these models has previously been studied for linear triangular elements. This paper extends this study to include quadratic triangular elements and other linear and quadratic elements. It is shown that for a given number of degrees of freedom the quadratic elements are more efficient than the linear elements. Based on the results of the convergence studies presented here, the use of quadratic quadrilateral elements is recommended and these may be complemented by quadratic triangular elements if necessary. The use of symmetry and antisymmetry boundary conditions when modelling rails was also investigated. It was found that these models predict all the modes of propagation within the frequencies investigated. The use of this approach is therefore recommended for elastic waveguides with symmetrical crosssection. en_US
dc.language.iso en en_US
dc.publisher SACAM 2010 en_US
dc.relation.ispartofseries W orkflow request;7641
dc.subject Guided waves en_US
dc.subject Semi analytical finite element en_US
dc.subject SAFE en_US
dc.subject Wave propagation en_US
dc.subject Rails en_US
dc.subject Applied mechanics en_US
dc.subject SACAM 2010 en_US
dc.title Accuracy of semi-analytical finite elements for modelling wave propagation in rails en_US
dc.type Presentation en_US


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