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RISS 인기검색어
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- 저자 : Onur Araz (검색결과 2 건)
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Series tuned mass dampers in vibration control of continuous railway bridges
Onur Araz,Volkan Kahya 국제구조공학회 2020 Structural Engineering and Mechanics, An Int'l Jou Vol.73 No.2
This paper presents the applicability of series tuned mass dampers (STMDs) to reduce the multiple resonant responses of continuous railway bridges under high-speed train. The bridge is modeled by two-span Bernoulli-Euler beam with uniform cross-section, and a STMD device consisting of two TMD units installed on the bridge to reduce its multiple resonant vibrations. The system is assumed to be under the action of a high-speed train passage which is modeled as a series of moving forces. Sequential Programming Technique (SQP) is carried out to find the optimal parameters of the STMD that minimizes the maximum peak responses of the bridge. Comparisons with the results available in the literature are presented to demonstrate the effectiveness and robustness of STMD system in reducing the multiple resonant responses of the continuous railway bridges under high-speed trains.
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Series tuned mass dampers in train-induced vibration control of railway bridges
Volkan Kahya,Onur Araz 국제구조공학회 2017 Structural Engineering and Mechanics, An Int'l Jou Vol.61 No.4
This paper presents the series multiple tuned mass dampers (STMDs) to suppress the resonant vibrations of railway bridges under the passage of high-speed trains (HSTs). A STMD device consisting of two spring-mass-damper units connected each other in series is installed on the bridge. In solution, bridge is modeled as a simply-supported Euler-Bernoulli beam with constant cross-section, and vehicle is simulated as a series of moving forces with constant speed. By the assumed mode method, the governing equations of motion of the beam-TMD device coupled system traversed by a moving train are obtained. The optimum values for the parameters of the STMD device are obtained for the criterion based on the minimization of the maximum dynamic displacement of the beam at its midspan. Single TMD and multiple TMDs in parallel are also considered for demonstration of the STMD device\'s performance. The results show that STMDs are effective in bridge vibration suppression and robust to parameters\' change in the main system and the absorber itself.
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