期刊
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING
卷 110, 期 10, 页码 903-920出版社
WILEY
DOI: 10.1002/nme.5432
关键词
topology optimization; finite cell method; higher-order FEM
资金
- Faculty of Aerospace Engineering, Delft University of Technology
- Villum foundation through the NextTop project
This article presents a detailed study on the potential and limitations of performing higher-order multi-resolution topology optimization with the finite cell method. To circumvent stiffness overestimation in high-contrast topologies, a length-scale is applied on the solution using filter methods. The relations between stiffness overestimation, the analysis system, and the applied length-scale are examined, while a high-resolution topology is maintained. The computational cost associated with nested topology optimization is reduced significantly compared with the use of first-order finite elements. This reduction is caused by exploiting the decoupling of density and analysis mesh, and by condensing the higher-order modes out of the stiffness matrix. Copyright (C) 2016 John Wiley & Sons, Ltd.
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