Dynamic response analysis of suspended beams subjected to moving vehicles and multiple support excitations
學年 98
學期 1
出版（發表）日期 2009-09-01
作品名稱 Dynamic response analysis of suspended beams subjected to moving vehicles and multiple support excitations
作品名稱（其他語言）
著者 Yau, J.D.
單位 淡江大學建築學系
出版者 London: Elsevier Ltd
著錄名稱、卷期、頁數 Journal of Sound and Vibration 325(4-5), pp.907-922
摘要 For dynamic analysis of a suspended beam subject to the simultaneous action of moving oscillators and multiple support motions, we need to deal with nonlinear interaction problems in conjunction with time-dependent boundary conditions. In this study, the total response of the suspended beam is decomposed into two parts: the pseudo-static response and the inertia-dynamic component. Then, the pseudo-static displacement is analytically obtained by exerting the support movements on the suspended beam statically and the governing equations in terms of the inertia-dynamic component as well as moving oscillators are transformed into a set of coupled generalized equations by Galerkin's method. Instead of solving the coupled equations containing pseudo-static support excitations and moving oscillators, this study treats all the nonlinear coupled terms as pseudo forces and solves the decoupled equations using the Newmark method with an incremental-iterative approach. Numerical investigations demonstrate that the present solution technique is available in dealing with the vehicle/bridge interaction problem involving multiple support motions, and that appropriate adjustments of cable sag ratios subject to the condition of identical bridge frequencies are beneficial for mitigating the earthquake-induced vibration of suspended bridge/vehicle coupling system.
關鍵字
語言 en
ISSN 0022-460X 1095-8568
期刊性質 國外
收錄於 SCI EI
產學合作
通訊作者 Yau, J.D.
審稿制度
國別 GBR
公開徵稿
出版型式 紙本 電子版
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