Aims and Scope

The goal of this workshop is to bring together scientists from numerical analysis, geometric modeling and engineering who are interested in topology optimization and isogeometric analysis. We aim at connecting the two fields by developing an isogeometric modeling framework that is well-suited for topology optimization, i.e., that allows for general topologies and that can handle changes in the topology in a robust and efficient way. On the other hand, we study topology optimization technologies that are suitable for B-spline and NURBS based geometry discretizations. The topics of the talks range from topology optimization in practical applications, topological derivatives, level set and density-based methods, to geometric modeling of topologically complex shapes, geometry segmentation and parametrization methods and unstructured splines spaces.



Monday, September 11, 2023

13:45 – 14:00    Opening

14:00 – 14:30    Peter Gangl (RICAM)
    An Introduction to Topology Optimization

14:30 – 15:15    Stefan Takacs (JKU Linz)
    An Introduction to Isogeometric Analysis

15:15 – 15:45    Coffee break

15:45 – 16:15    Thomas Takacs (RICAM)
    Geometric Challenges in Isogeometric Analysis

16:15 – 17:00    Mario Kapl (Carinthia University of Applied Sciences)
    C1 smooth isogeometric spline spaces for trilinearly parameterized multi-patch volumes

17:00 – 17:45    Andrea Bressan (IMATI CNR)
    A dirty trick


Tuesday, September 12, 2023

08:30 – 09:15    Emad Shakur (RICAM)
    Isogeometric analysis for solving topology optimization problems with precise and explicit boundary representation

09:15 – 10:00    Fehmi Cirak (Cambridge University)
    Unified geometry and analysis representations for shape and topology optimisation

10:00 – 10:40    Coffee break

10:40 – 11:05   Bert Jüttler (JKU Linz)
    Locally linearly independent B-spline bases on adaptively refined hierarchical T-meshes

11:05 – 11:30    Felix Scholz (JKU Linz)
    Optimizing isogeometric discretizations using deep neural networks

11:30 – 12:15    Benjamin Marussig (TU Graz)
    Immersed Boundary-Conformal Method: An isogeometric discretization for topology optimization?


12:15 – 14:00    Lunch break


14:00 – 14:45    Majd Kosta (Technion)
     Multi-material stress constrained topology optimization with precise evolving boundaries using IGA

14:45 – 15:30    Michael Wiesheu (TU Darmstadt)
    Topology Optimization of a Magnetocaloric Refrigeration System with Isogeometric Analysis

15:30 – 16:15    Coffee break

16:15 – 17:00    Hugo Verhelst (TU Delft)
    Isogeometric Analysis of Wrinkling

19:00 Dinner at Gasthof Lüftner (Klausenbachstraße 18, A-4040 Linz)


Wednesday, September 13, 2023

09:00 – 09:35    Jan Groselj (University of Ljubljana)
    C1 Clough-Tocher splines of higher degrees in a B-spline-like representation

09:35 – 10:10    Marjeta Knez (University of Ljubljana)
     A family of C1 Clough-Tocher spline spaces on G0 piecewise quadratic domain partitions

10:10 – 10:45    Coffee break

10:45 – 11:30    Jochen Hinz (EPFL)
    Spline-based parameterisation techniques

11:30 – 12:15    Ye Ji (TU Delft/Dalian)
    Analysis-suitable Parameterization Techniques for Isogeometric Analysis

Book of abstracts


The workshop takes place in the seminar room SP2 416-2 at the RICAM institute (4th floor of building "Science Park 2" at JKU Campus in Linz, Austria).



Peter Gangl (e-mail: peter.gangl(at)
Thomas Takacs (e-mail: thomas.takacs(at)