Damping capacity improvement of machine structures by close packing with balls
| Autor: | Yasunori Wakasawa, Etsuo Marui, Masatoshi Hashimoto |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Materials science
business.industry Mechanical Engineering Vibration control Close-packing of equal spheres Structural engineering Impulse (physics) Industrial and Manufacturing Engineering Condensed Matter::Soft Condensed Matter Damping capacity Vibration Machining Ball (bearing) Composite material business Excitation |
| Zdroj: | International Journal of Machine Tools and Manufacture. 42:467-472 |
| ISSN: | 0890-6955 |
| DOI: | 10.1016/s0890-6955(01)00143-2 |
| Popis: | This paper deals with an experimental investigation on damping characteristics of structures packed with balls. The structures for testing are square pipes packed with glass balls. The effects of impulse magnitude, square pipe dimensions, ball size and excitation directions on damping characteristics are investigated. The experiments show that the damping characteristics are markedly affected by the ball size, and the damping capacity is improved by the ball packing. It is also shown that the damping capacity is affected by the packing arrangements, packing ratio and repulsion coefficient. Dramatic improvement in damping capacity is achieved by leaving only a small space between the packed balls and the inner surface of the square pipe. This fact is confirmed experimentally. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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