Boundary Element Analysis with trimmed NURBS and a generalized IGA approach

摘要

A novel approach to the simulation with the boundary element method usingtrimmed NURBS patches is presented. The advantage of this approach is itsefficiency and easy implementation. The analysis with trimmed NURBS is achievedby double mapping. The variation of the unknowns on the boundary is specifiedin a local coordinate system and is completely independent of the descriptionof the geometry. The method is tested on a branched tunnel and the resultscompared with those obtained from a conventional analysis. The conclusion isthat the proposed approach is superior in terms of number of unknowns andeffort required.