Isogeometric Analysis

  Flow simulation in a double extruder Copyright: Jan Helmig

Lecture „Isogeometric Analysis“ is an elective course suitable for students in the Master programs „General Mechanical Engineering“, „Computational Engineering Science“ and „Simulation Sciences“.

Contact

Norbert Hosters © Copyright: Renate Krahforst

Phone

work
+49 241 80 99915

Email

E-Mail
 

Calendar

Lecture: Thursday 10:30am to 12pm, lecture room GRS 001

Exercise: Thursday 12:15pm to 1pm, lecture room GRS 001

In Summer 2021 the course is offered online. Please refer to calendar entries and announcements in Moodle.

 

Instructors

Lecture: Dr.-Ing. Norbert Hosters

Exercises: Patrick Antony, M.Sc. and others

Content

The course will give an introduction to the concept of Isogeometric Analysis, for short IGA, particularly in comparison to the classical Finite Element Method. In Isogeometric Analysis, the interpolation is performed using non-uniform rational B-splines, for short NURBS. As NURBS are also the basis of CAD-models, the idea is to be able to perform finite element simulations directly on CAD-models, avoiding a separate meshing step. The new nature of the interpolation requires the adaption of the classical finite element method, e.g., mesh refinement strategies specific to IGA need to be developed. During the course, we will cover the application of IGA to structural mechanics, heat transfer, and fluid mechanics. In the context of fluid mechanics, a comparison to the related topic of „NURBS-Enhanced Finite Elements“ will be discussed.

The module consists of a lecture (2 SWS) and an exercise (1 SWS), and carries 6 ECTS points.

Topics

  • fundamentals of isogeometric analysis
  • refining strategies in IGA
  • application to structural mechanics, heat transfer, and fluid mechanics
  • comparison to „NURBS-Enhanced Finite Elements„

Literature

  1. J. A. Cottrell, T. Hughes, Y. Bazilevs: Isogeometric Analysis - Toward Integration of CAD and FEA , Wiley, 2009
  2. Sevilla, R. Fernandez-Mendez, S. and Huerta A.: 3D NURBS-Enhanced Finite Element Method (NEFEM) , International Journal for Numerical Methods in Engineering, 88 (2), 103-125, 2011

Examination

Oral exam and homework.