| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
|
|---|
| Outline of Final Research Achievements |
The presence of irregularity in a periodic structure results in the vibration localization which exhibits locally large amplitude. The combination of the vibration localization and a viscous damper can be one way to improve damping performance by intentionally creating a vibration mode which is strongly localized at the damper position. This study investigates the behavior of free and forced vibration of a uniform tensioned string which is coupled to ground through homogeneously distributed stiffness and to a viscous damper, examining the effect of vibration localization on the damping performance. Damping characteristics are evaluated by analyses of two types of the analytical models as well as by experiment. The results show that the added concentrated mass induces vibration mode which is strongly localized at the damper position, demonstrating improvement in damping performance.
|
