Isogeometric analysis of topologically complex shell structures

In the conventional isogeometric analysis, a topologically complex shell structure is required to be modeled using multiple NURBS patches. In the CAD industry, however, the topologically complex shell structure is conveniently and efficiently created via trimming techniques rather than constructing multiple untrimmed NURBS patches. With this feature, the isogeometric analysis which enables to handle the topologically complex shell structure with...