| Summary: | 碩士 === 國立彰化師範大學 === 工業教育學系 === 87 === The purpose of this research is to study the transient dynamics of a beam-mass system with passive control apparatus. Various effects of parameters to the performance of the system are discussed.
Employing the principle of lever, the control force produced by the passive control device can be amplified. The passive control apparatus is to be applied on the cable-supported bridge. Base on Bernoulli-Euler beam theory, the partial differential equations which describe the transient vibrations of a beam-mass system with passive control are derived. By employing Galerkin procedure, the partial differential equations are reduced to an initial value problem with finite degree-of-freedom. The method of numerical integration is used to get convergent solutions.
The result of this study indicates that the deflection of the beam can be reduced, if the passive control device is applied without the damper. Similar effect can also be obsessed, if the damping of the damper is small. However, the motion of the system may be amplified if large values of damping are taken into account.
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