Metallic inserts as a tool to alter the structural damping of joined structures
- Resource Type
- Article
- Authors
- Wentzel, Henrik; Olsson, Marten; Oberg, Martin
- Source
- International Journal of Surface Science and Engineering; January 2008, Vol. 2 Issue: 1-2 p152-167, 16p
- Subject
- Language
- ISSN
- 1749785X; 17497868
The dynamic response of joined structures, notably the amplification of vibrations, is strongly influenced by the characteristics of the joints. Bolted joints are non-linear both in stiffness and magnitude of energy dissipation, and structures assembled with bolted joints inherit these non-linearities. This largely experimental study shows how thin metallic inserts in the contact region may serve as a tool to alter the non-linear properties of the joint and in this way increase or decrease the level of equivalent viscous damping in the structure. Both quasi-static and dynamic measurements have been performed and a mathematical model trimmed to the static measurements has been shown to produce valid results also for dynamic simulations.