Abstract
A flexure which retains its support stiffness characteristics for large deflections, is optimized with respect to maximum allowable stress, low actuation stiffness and high support stiffnesses. Such an optimization requires an efficient model which accurately describes the stiffness characteristics and stress distribution of flexures. For this purpose a multibody modelling approach based on a non-linear finite element description is investigated and extended to include the computation of the stress distribution in the deformed configuration. It is shown that the accuracy of the maximum occurring stress is comparable with those obtained from a classical non-linear finite element analysis. An optimized shape of the flexure is found and for deflection angles larger than 7.4º, it is preferable over a single leaf-spring flexure.
| Original language | English |
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| Title of host publication | Proceedings of The 1st Joint International Conference on Multibody System Dynamics |
| Editors | Aki Mikkola, Werner Schiehlen |
| Place of Publication | Lappeenranta, Finland |
| Publisher | Lappeenranta University of Technology |
| Number of pages | 10 |
| ISBN (Print) | 978-952-214-778-3 |
| Publication status | Published - 25 May 2010 |
| Event | 1st Joint International Conference on Multibody System Dynamics, IMSD 2010 - Lappeenranta, Finland Duration: 25 May 2010 → 27 May 2010 Conference number: 1 |
Conference
| Conference | 1st Joint International Conference on Multibody System Dynamics, IMSD 2010 |
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| Abbreviated title | IMSD |
| Country/Territory | Finland |
| City | Lappeenranta |
| Period | 25/05/10 → 27/05/10 |
Keywords
- Stresses in beams
- Stress resultants
- Finite elements
- Large deflection
- Leaf-spring