Shape optimization of topologically optimized structures using NURBS

DFX 2016: Proceedings of the 27th Symposium Design for X, 5-6 October 2016, Jesteburg, Germany

Year: 2016
Editor: Dieter Krause, Kristin Paetzold, Sandro Wartzack
Author: Kajo Lüdeker, Julian; Kriegesmann, Benedikt
Series: DfX
Institution: Hamburg University of Technology
Section: Test und Simulation
Page(s): 039-050
ISBN: 978-3-946094-09-8


Topology optimization using the solid isotropic material penalization method provides a density distribution, which contains elements with intermediate densities between void and solid. A discrete design is obtained by some geometric interpretation of this result, which is often determined manually. Afterwards, the design is sized with respect to stress, sometimes in the framework of a shape optimization. The current work provides a fully automated routine to obtain a geometric interpretation and parameterization of two dimensional topology optimized structures using non-uniform rational Bézier splines (NURBS), and a shape optimization of the parameterized structure afterwards. Automating both steps reduces development time and cost, and allows embedding them into a larger optimization framework (e.g., multidisciplinary or robustness optimization).

Keywords: Topology optimization, Shape optimization, NURBS, Structure mechanics

Please sign in to your account

This site uses cookies and other tracking technologies to assist with navigation and your ability to provide feedback, analyse your use of our products and services, assist with our promotional and marketing efforts, and provide content from third parties. Privacy Policy.