foreverdavid / isogeometric_application

isogeometric_application (IA) is an extension of KRATOS Multiphysics framework to assist isogeometric analysis with NURBS, hierarchical B-Splines and T-Splines. IA uses the Bezier decomposition concept to retain the local characteristics of the standard finite element. With this design, IA can interoperably works with other KRATOS applications.

isogeometric_application (IA) (c) Hoang-Giang Bui, 2014, 2015, 2016, 2017, 2018, 2019, Ruhr University Bochum, is an extension of KRATOS Multiphysics framework to assist isogeometric analysis with multipatch NURBS, hierarchical B-Splines and T-Splines. IA uses the Bezier decomposition concept to retain the local characteristics of the finite element. IA is designed to be a complete IGA modeller and employs the Kratos infrastructure to perform analysis.

NURBS:

• NUBRS patch/multipatch creation. All interface rotation are handled (2D/3D).
• Support NURBS file format v2.1
• Utilities to create standard geometry (line, arc, rectangle, ring).
• Creation of surface by lofting two lines.
• Creation of volume by lofting two surfaces.
• Creation of sweep volume.
• Creation of bending strip patch.
• h/p/k-refinement. Control values are transferred automatically.
• Post-processing in GiD (2D/3D, multipatch, using Lagrange mesh).
• Post-processing in Glvis (single patch).
• Bezier extraction.

Hierarchical B-Splines:

• Generation of hierarchical B-Splines patch/multipatch from NURBS patch/multipatch. The conforming of hierarchical B-Splines during refinement is preserved.
• Local refinement retaining the basis function linear independence. Control values are transferred automatically.
• Bezier extraction.

T-Splines:

• Read-in T-Splines.
• Bezier extraction.