Numerical Tools for Isogeometric Analysis

The present book deals with the development of robust numerical tools for Isogeometric Analysis suitable for problems of solid mechanics in the nonlinear regime. To that end a new solid-shell element based on the Assumed Natural Strain method is presented for the analysis of thin shell-like structures. The formulation is extensively validated using a set of well-known benchmark problems available in the literature in both linear and nonlinear (geometric and material) regimes. It is also proposed an alternative formulation which is focused on the alleviation of the volumetric locking pathology in linear elastic problems. In addition an introductory study in the field of contact mechanics in the context of Isogeometric Analysis is also presented with special focus on the implementation of a the Point-to-Segment algorithm. All the methodologies presented in the current work were implemented in a in-house code together with several pre- and post-processing tools.