| タイトル | Tire stiffness and damping determined from static and free-vibration tests |
| 本文（外部サイト） | http://hdl.handle.net/2060/19800018802 |
| 著者（英） | Sleeper, R. K.; Dreher, R. C. |
| 著者所属（英） | NASA Langley Research Center |
| 発行日 | 1980-07-01 |
| 言語 | eng |
| 内容記述 | Stiffness and damping of a nonrolling tire were determined experimentally from both static force-displacement relations and the free-vibration behavior of a cable-suspended platen pressed against the tire periphery. Lateral and force-and-aft spring constants and damping factors of a 49 x 17 size aircraft tire for different tire pressure and vertical loads were measured assuming a rate-independent damping form. In addition, a technique was applied for estimating the magnitude of the tire mass which participates in the vibratory motion of the dynamic tests. Results show that both the lateral and force-and-aft spring constants generally increase with tire pressure but only the latter increased significantly with vertical tire loading. The fore-and-aft spring constants were greater than those in the lateral direction. The static-spring-constant variations were similar to the dynamic variations but exhibited lower magnitudes. Damping was small and insensitive to tire loading. Furthermore, static damping accounted for a significant portion of that found dynamically. Effective tire masses were also small. |
| NASA分類 | AIR TRANSPORTATION AND SAFETY |
| レポートNO | 80N27302
NASA-TP-1671
L-13500 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/172029 |
