Based on the Lagrangian approach, the vibration of a multi-span non-uniform bridge subjected to a moving vehicle is analyzed by using modi"ed beam vibration functions as the assumed modes. The vehicle is modelled as a two-degree-offreedom system. The method is extended to the action of a moving trai
VIBRATION OF MULTI-SPAN NON-UNIFORM BEAMS UNDER MOVING LOADS BY USING MODIFIED BEAM VIBRATION FUNCTIONS
โ Scribed by D.Y. Zheng; Y.K. Cheung; F.T.K. Au; Y.S. Cheng
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 237 KB
- Volume
- 212
- Category
- Article
- ISSN
- 0022-460X
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โฆ Synopsis
Based on Hamilton's principle, the vibration of a multi-span non-uniform beam subjected to a moving load is analysed by using modified beam vibration functions as the assumed modes. The modified beam vibration functions satisfy the zero deflection conditions at all the intermediate point supports as well as the boundary conditions at the two ends of the beam. Numerical results are presented for both uniform and non-uniform beams under moving loads of various velocities. Examples show that this method converges very quickly and good results are obtained.
๐ SIMILAR VOLUMES
The dynamic behavior of multi-span non-uniform beams transversed by a moving load at a constant and variable velocity is investigated. The continuous beam is modelled using Bernoulli}Euler beam theory. The solution is obtained by using both the modal analysis method and the direct integration method
The method of modal analysis is presented to investigate the random vibration of a multi-span Timoshenko beam due to a load moving at a constant velocity. The load is considered to be a stationary process with a constant mean value and a variance. The effects of both velocity and statistical charact
It is well known that Euler}Bernoulli beam theory neglects the e!ect of transverse shear strain on the bending solutions because the assumption of plane cross-sections perpendicular to the axis of the beam remaining plane and perpendicular to the axis after deformation. This simple beam theory can g