Vector form intrinsic finite element method for analysis of train–bridge interaction problems considering the coach-coupler effect
學年 107
學期 2
出版（發表）日期 2019-02-01
作品名稱 Vector form intrinsic finite element method for analysis of train–bridge interaction problems considering the coach-coupler effect
作品名稱（其他語言）
著者 YF Duan; SM Wang; JD Yau
單位
出版者
著錄名稱、卷期、頁數 International Journal of Structural Stability and Dynamics 19(2), 1950014
摘要 In this paper, the vector form intrinsic finite element (VFIFE) method is presented for analysis the train–bridge systems considering the coach-coupler effect. The bridge is discretized into a group of mass particles linked by massless beam elements and the multi-body coach with suspension systems is simulated as a set of mass particles connected by parallel spring-dashpot units. Then the equation of motion of each mass particle is solved individually and the internal forces induced by pure deformations in the massless beam elements are calculated by a fictitious reverse motion method, in which the structural stiffness matrices need not be updated or factorized. Though the vector-form equations resulting from the VFIFE method cannot be used to compute the structural frequencies by the eigenvalue approach, this study proposes a numerical free vibration test to identify the bridge frequencies for evaluating the bridge damping. Numerical verifications demonstrate that the present VFIFE method performs as accurately as previous numerical ones. The results show that the couplers play an energy-dissipating role in reducing the car bodies’ response due to the bridge-induced resonance, but not in their response due to the train-induced resonance because of the bridge’s intense vibration. Meanwhile, a dual-resonance phenomenon in the train–bridge system occurs when the coach-coupler effect is considered in the vehicle model.
關鍵字 Coupler;mass particle;resonance;train–bridge system;vector form intrinsic finite element
語言 en
ISSN
期刊性質 國外
收錄於 SCI EI
產學合作
通訊作者 JD YAU
審稿制度 是
國別 SGP
公開徵稿
出版型式 ,電子版
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/116024 )