A new algorithm for topology optimization using a level-set method

Authors:
Samuel Amstutz;Heiko Andrä
Affiliations:
Johann Radon Institute for Computational and Applied Mathematics (RICAM), Austrian Academy of Sciences, Linz, Austria;Fraunhofer Institut für Techno- und Wirtschaftsmathematik, Kaiserslautern, Germany
Venue:
Journal of Computational Physics
Year:
2006

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Abstract

The level-set method has been recently introduced in the field of shape optimization, enabling a smooth representation of the boundaries on a fixed mesh and therefore leading to fast numerical algorithms. However, most of these algorithms use a Hamilton-Jacobi equation to connect the evolution of the level-set function with the deformation of the contours, and consequently they can hardly create new holes in the domain (at least in 2D). In this work, we propose an evolution equation for the level-set function based on a generalization of the concept of topological gradient. This results in a new algorithm allowing for all kinds of topology changes.