Investigation of Spatial-Varying Frequencies Concerning Effects of Moving Mass on a Beam
學年 111
學期 2
出版（發表）日期 2023-02-16
作品名稱 Investigation of Spatial-Varying Frequencies Concerning Effects of Moving Mass on a Beam
作品名稱（其他語言）
著者 Judy P. Yang, Zhi-Yuan Su, J. D. Yau, and D. S. Yang
單位
出版者
著錄名稱、卷期、頁數 International Journal of Structural Stability and Dynamics 23(16n18),　2340002
摘要 The spatial-varying frequency of a vehicle-bridge interaction (VBI) system subjected to a moving mass is theoretically derived and numerically investigated through a three-dimensional VBI model, in which the effects of moving mass are introduced through the inertial force and centrifugal force in the equation of motion of the bridge. For a large vehicle-to-bridge mass ratio, it has been known that the frequency of a VBI system could change with respect to the location of a moving vehicle. As such, this study derives the analytical solution based on a moving mass-beam system to account for frequency variation and further builds the numerical model with detailed implementation for practical applications. The numerical results show the following findings: (1) The frequency of a VBI system is a function of velocity and location of a moving vehicle. (2) The reduction of spatial-varying frequency ratio for a particular mode decreases with respect to the mode of higher order. (3) The maximum reduction of spatial-varying frequency ratio of the first mode in a moving mass-beam system occurs in the location where the bridge has the maximum deflection as a result of local mode excitation. (4) For the VBI system with high suspension stiffness and large vehicle-to-bridge mass ratio, the absolute variation of spatial-varying frequency ratio of the first mode can be up to 30–40%.
關鍵字 Moving mass;frequency variation;inertial force;centrifugal force;mass ratio;scale effect
語言 en_US
ISSN 1793-6764
期刊性質 國外
收錄於 SCI EI
產學合作
通訊作者 Judy P Yang
審稿制度 是
國別 SGP
公開徵稿
出版型式 ,電子版
SDGS 優質教育,產業創新與基礎設施