Journal article
A Q4/Q4 continuum structural topology optimization implementation
Structural and Multidisciplinary Optimization, Vol.27(1), pp.130-135
05/2004
DOI: 10.1007/s00158-003-0365-9
Abstract
A node-based design variable implementation for continuum structural topology optimization in a finite element framework is presented and its properties are explored in the context of solving a number of different design examples. Since the implementation ensures C0continuity of design variables, it is immune to element-wise checkerboarding instabilities that are a concern with element-based design variables. Nevertheless, in a subset of design examples considered, especially those involving compliance minimization with coarse meshes, the implementation is found to introduce a new phenomenon that takes the form of “layering” or “islanding” in the material layout design. In the examples studied, this phenomenon disappears with mesh refinement or the enforcement of sufficiently restrictive design perimeter constraints, the latter sometimes being necessary in design problems involving bending to ensure convergence with mesh refinement. Based on its demonstrated performance characteristics, the authors conclude that the proposed node-based implementation is viable for continued usage in continuum topology optimization.
Details
- Title: Subtitle
- A Q4/Q4 continuum structural topology optimization implementation
- Creators
- S.F Rahmatalla - Department of Civil and Environmental Engineering, Center for Computer-Aided Design The University of Iowa 52242 Iowa City Iowa USAC.C Swan - Department of Civil and Environmental Engineering, Center for Computer-Aided Design The University of Iowa 52242 Iowa City Iowa USA
- Resource Type
- Journal article
- Publication Details
- Structural and Multidisciplinary Optimization, Vol.27(1), pp.130-135
- DOI
- 10.1007/s00158-003-0365-9
- ISSN
- 1615-147X
- eISSN
- 1615-1488
- Publisher
- Springer-Verlag; Berlin/Heidelberg
- Language
- English
- Date published
- 05/2004
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Civil and Environmental Engineering; Injury Prevention Research Center
- Record Identifier
- 9983991937202771
Metrics
48 Record Views