TY - GEN A1 - Chasapi, Margarita A1 - Dornisch, Wolfgang A1 - Klinkel, Sven T1 - Patch coupling in isogeometric analysis of solids inboundary representation using a mortar approach T2 - International Journal for Numerical Methods in Engineering N2 - This contribution is concerned with a coupling approach for nonconforming NURBS patches in the framework of an isogeometric formulation for solids inboundary representation. The boundary representation modeling technique inCAD is the starting point of this approach. We parameterize the solid according to the scaled boundary finite element method and employ NURBS basis functions for the approximation of the solution. Therefore, solid surfaces consist of several sections, which can be regarded as patches and discretized independently. The main objective of this study is to derive an approach for the connection of independent sections in order to allow for local refinement and thus an accurate and efficient discretization of the computational domain. Non-conforming sections are coupled with a mortar approach within a master-slave framework. The coupling of adjacent sections ensures the equality of mutual deformations along the interface in a weak sense and is enforced by constraining the NURBS basis functions on the interface. We apply this approach to non-linear problems in two dimensions and compare the results with conforming discretizations. KW - Isogeometric analysis KW - Scaled Boundary FEM KW - Mortar Method Y1 - 2020 U6 - https://doi.org/10.1002/nme.6354 SN - 1097-0207 VL - 121 IS - 14 SP - 3206 EP - 3226 ER -