淡江大學機構典藏:Item 987654321/125671
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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/125671


    Title: Frequency Variation and Dynamic Behavior in a Moving Mass-Plate System
    Authors: Yau, Jong-dar
    Keywords: Plate;moving mass;frequency variation;bridge;local mode
    Date: 2023-08-28
    Issue Date: 2024-07-31 12:07:24 (UTC+8)
    Publisher: World Scienti¯c Publishing Company
    Abstract: As the frequency variation in a moving mass-plate system is seldom discussed in the previous work, this study first formulates the semi-analytical solutions of a system consisting of a moving mass on a square plate. Based on the moving mass-plate system, several finite element models with designed plate-type bridges are established to further investigate the effect of moving mass on a plate, the influence of bridge local modes, and the influence of moving loads on a bridge. The numerical results have shown that the frequency variation of a plate-type bridge can reach 30% for the first three modes. The unique phenomenon of wave propagation is exhibited in the acceleration responses of the plate-type bridge, while it is uncommon for a beam-type bridge. For design purpose, the following are remarked: (1) The use of Rayleigh damping on the stiffened bridge can effectively suppress the influence of local modes on the bridge deck. (2) The high stiffness in the moving load can be served as the damper to reduce the dynamic responses of a vehicle. (3) In the design stage of a plate-type bridge subjected to moving loads, the moving force is the most conservative one among the three moving loads.
    Relation: International Journal of Structural Stability and Dynamics 24(8),　2450088
    DOI: 10.1142/S0219455424500883
    Appears in Collections:[Graduate Institute & Department of Architecture] Journal Article

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