Control Of Floor Vibration

Vibration control engineering of vibration sensitive advanced technology facilities atfs generally involves some combination of measurement and analysis for which data representation must be consistent.

Control of floor vibration.

Design of structural and mechanical systems including vibration isolation and. For slender floor structures as made in steel or composite construction serviceability criteria govern the design. Application of dynamic response control. Mode 1 of a 12 bay floor system.

The more complex a structure becomes the more difficult it is to accurately predict and effectively minimize the impact of vibration. Vibration responses to this kind of excitation are acquired over a grid of test points covering the floor area of interest. This grid needs to be dense enough to describe all of the likely floor mode shapes in sufficient detail. Adding architectural features mass and or stiffness are normally viewed as possible solutions to floor vibration problem.

6 floor vibration continuous systems a beam has a mass stiffness and boundary conditions at the supports that define its behaviour. Measurements in operating facilities to verify compliance with. L the design guide should not be applied to specification of tolerable vibration by the introduction of acceptance classes chapter 4 and l buildings prediction of floor response due to human. Adding damping to the floor system using tuned mass dampers is a very effective way of floor vibration control.

In this mode the vibration reaches maximum amplitude in one position an antinode at mid span of the beam. In the ambient vibration survey the floor dynamic excitation is provided by the environment in which it resides. The canary wharf towers in london england are a typical example where one floor is suspended from the complex floor system of the floor above. The floor impact sound problem in residential buildings is essentially a serviceability problem in terms of annoying the users and rarely affect the fatigue damage or safety of structures since the main cause of the floor impact sound is the vibration of floor members induced by external actions.

Please use one of the following formats to cite this article in your essay paper or report. The benefits of including floor vibration control for nano tech facilities over designing quiet buildings. The system has a fundamental frequency which corresponds to the first lowest mode of vibration.