Abstract
The localized analytical sensitivity for eigenfrequency is extended to the non-linear problem of 3D continuum buckling analysis. Implemented in a finite element approach the inherent complexity of mode switching and multiple eigenvalues is found not to be a practical problem. The number of necessary redesigns is of the order 10-20 as illustrated by a specific example, where also different cases of stiffness interpolation are exemplified.
Original language | English |
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Journal | Structural and Multidisciplinary Optimization |
Volume | 57 |
Issue number | 1 |
Pages (from-to) | 293–304 |
ISSN | 1615-147X |
DOIs | |
Publication status | Published - 2018 |
Keywords
- Analytical
- Buckling
- FE
- Optimization
- Sensitivities