Proceedings of the Korean Society for Noise and Vibration Engineering Conference (한국소음진동공학회:학술대회논문집)
- 2001.05a
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- Pages.207-212
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- 2001
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- 1598-2548(pISSN)
Dynamic Stability and Vibration of a Drum Brake Shoe under a Distributed Frictional Force
분포 마찰력을 받는 드럼 브레이크-슈의 동적안정성과 진동
- Ryu, Bong-Jo (Dept. of Mechanical Design Engng., Hanbat National University) ;
- Ryu, Si-Ung (Dept. of Aerospace Engng., Univ. of Osaka Prefectur) ;
- Yoshihiko Sugiyama (Dept. of Aerospace Engng., Univ. of Osaka Prefectur) ;
- Oh, Boo-Jin (Graduate School Student, Hanbat National University)
- Published : 2001.05.01
Abstract
In this paper, dynamic stability and vibration characteristics of a flexible shoe in drum brake systems are investigated. The frictional force between the drum and the shoe is assumed as a distributed frictional force, while the shoe is modeled as an elastic beam supported by two translational springs at both ends and elastic foundations. Governing equations of motion are derived by energy expressions, and numerical results are calculated by finite element method. Through the numerical simulation, critical distributed frictional forces are calculated by changing the stiffness of two translational springs and elastic foundation parameters. It is also shown that the beam loses its stability by flutter and divergence depending on the stiffness of elastic supports and elastic foundation parameters. Finally, the time responses of the beam corresponding to their instability types are demonstrated.
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