Abstract
Structural shape and topology optimization using level set functions is becoming increasingly popular. However, traditional methods do not naturally allow for new hole creation and solutions can be dependent on the initial design. Various methods have been proposed that enable new hole insertion; however, the link between hole insertion and boundary optimization can be unclear. The new method presented in this paper utilizes a secondary level set function that represents a pseudo third dimension in two-dimensional problems to facilitate new hole insertion. The update of the secondary function is connected to the primary level set function forming a meaningful link between boundary optimization and hole creation. The performance of the method is investigated to identify suitable parameters that produce good solutions for a range of problems. Copyright (c) 2012 John Wiley & Sons, Ltd.
| Original language | English |
|---|---|
| Pages (from-to) | 118-134 |
| Number of pages | 17 |
| Journal | International Journal for Numerical Methods in Engineering |
| Volume | 93 |
| Issue number | 1 |
| Early online date | 9 Jul 2012 |
| DOIs | |
| Publication status | Published - 6 Jan 2013 |
Bibliographical note
ACKNOWLEDGEMENTS The work reported in this paper has been undertaken as part of the UK Engineering and Physical Sciences Research Council funded Innovative Design and Manufacturing Research Centre at the University of Bath.The authors would also like to thank Numerical Analysis group at the Rutherford Appleton Lab for their FORTRAN HSL packages.Keywords
- topology optimization
- level set method
- hole insertion
- compliance minimization