Effect of Damping at the Support of a Rotating Beam on Vibrations.
ARMY ARMAMENT RESEARCH AND DEVELOPMENT COMMAND WATERVLIET NY BENET WEAPONS LAB
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The paper presents a formulation for the study of damping effects in dynamic structural problems and a specific application. A finite element formulation is first derived from the versatile unconstrained variational approach. The vibration of a rotating beam is used here as a concrete example. Viscous damping terms at the support can be present due to either local deflection or rotation. These terms can obviously affect the frequencies of the rotating beam. They are easily incorporated in the present formulation using the concept of unconstrained variations. Numerical data will be presented to demonstrate the qualitative as well as quantitative effects on the vibratory behavior of this rotating beam due to such damping terms. Author
- Structural Engineering and Building Technology