https://scholars.lib.ntu.edu.tw/handle/123456789/61517
標題: | Vibration and Stability of a Shallow Arch under a Moving Mass-Dashpot-Spring System | 作者: | Chen, Jen-San Yang, Min-Ray |
公開日期: | 2007 | 卷: | Vibration | 起(迄)頁: | 66-72 | 來源出版物: | ASME Journal of Vibration and Acoustics | 摘要: | In this paper we study the dynamic behavior of a shallow arch under a moving load system containing two masses, a dashpot, and a suspension spring. It is assumed that the masses in the load system are under the action of gravity. This paper is an extension of a previous publication in which the arch is loaded by a moving point force. The emphasis of the paper is placed on finding out how the inertia effect of the load system affects the dynamic response of the arch. It is found that the point-force model is a good approximation only when the arch is slender and the moving speed of the load system is low. The boundary of a dangerous speed zone is defined based on the comparison of the total energy gained by the arch and an energy barrier. It is observed that the suspension model predicts a considerably different dangerous speed zone from the one predicted by the point-force model, especially in the high-speed range. Copyright © 2007 by ASME. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/85607 https://www.scopus.com/inward/record.uri?eid=2-s2.0-34248351566&doi=10.1115%2f1.2345673&partnerID=40&md5=3c6015b2360e6e60fc97ab8f5267c04c |
ISSN: | 10489002 | SDG/關鍵字: | Dynamic response; Gravitational effects; Load testing; Mathematical models; Stability; Vibrations (mechanical); Inertia effect; Moving load system; Point-force model; Arches |
顯示於: | 機械工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。