Design of a New Energy Absorber Based on the Coulomb Friction to Protect Structures Against Impact Loads |
| D. Karayel, G. Atali, S. Ozkan
Sakarya University, Department of Mechatronics Engineering, 54100 Sakarya, Turkey |
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| This study aims to design a new energy absorber (damper) to protect structures against impact loads and against sudden transition from resonance region. It is an adaptation of interference fit process in machine elements for designing of damper based on the principles of Coulomb friction. There are a lot of investigations of dampers based on Coulomb friction. In this study, pre-stress is obtained by interference fit. It is different from other studies and is original in this respect. There is a contact pressure between the shaft and the hub in the interference fit joints and frictional force occurs with the beginning of the relative motion in the axial direction. Thus, the damaging energy is absorbed from the system. The quantity of damping ratio depends directly on the tolerances of the shaft and the hub and can be easily adjusted. This is another advantage of the friction damper with interference fit compared to similar dry friction dampers. |
DOI:10.12693/APhysPolA.134.109 topics: energy absorber, coulomb friction, protecting structures, impact loads |