Abstract
Damping of torsional beam vibrations of slender beam-structures with thin-walled cross-sections is investigated. Analytical results from solving the differential equation governing torsion with viscous bimoments imposed at the boundary, are compared with a numerical approach with three-dimensional, isoparametric elements. The viscous bimoments act on the axial warping displacements associated with inhomogeneous torsion, and are in a numerical format realized by suitable configurations of concentrated, axial forces describing discrete dampers. It is illustrated by an example that significant damping ratios may be obtained for a beam with an open cross-section.
| Original language | English |
|---|---|
| Title of host publication | 8th Conference on Smart Structures and Materials, SMART 2017 and 6th International Conference on Smart Materials and Nanotechnology in Engineering, SMN 2017 |
| Editors | Alfredo Guemes |
| Publisher | International Center for Numerical Methods in Engineering |
| Publication date | 2017 |
| Pages | 1030-1041 |
| ISBN (Electronic) | 978-849469093-8 |
| Publication status | Published - 2017 |
| Externally published | Yes |
| Event | 8th ECCOMAS Thematic Conference on Smart Structures and Materials, SMART 2017 and 6th International Conference on Smart Materials and Nanotechnology in Engineering, SMN 2017 - Madrid, Spain Duration: 5. Jun 2017 → 8. Jun 2017 |
Conference
| Conference | 8th ECCOMAS Thematic Conference on Smart Structures and Materials, SMART 2017 and 6th International Conference on Smart Materials and Nanotechnology in Engineering, SMN 2017 |
|---|---|
| Country/Territory | Spain |
| City | Madrid |
| Period | 05/06/2017 → 08/06/2017 |
| Sponsor | Carinthian Tech Research AG (CTR) |
Keywords
- Complex natural frequency
- Damping
- Finite element method
- Torsional beam vibrations
- Viscous bimoment
- Warping