کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
510115 | 865742 | 2009 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Critical velocity of a load moving on a beam with a sudden change of foundation stiffness: Applications to high-speed trains Critical velocity of a load moving on a beam with a sudden change of foundation stiffness: Applications to high-speed trains](/preview/png/510115.png)
The transient dynamic response of a beam supported on a foundation with sudden stiffness change and subjected to a force moving with constant velocity is analysed. The abrupt change is located at the mid-section of the beam of finite length. Two analytical approaches are implemented. In the first one, the response is obtained by finite integral transformations incorporating global modes of vibration, while in the second the analytical responses of each half of the beam are linked by continuity conditions. The values obtained are used to study the influence of the abrupt change on the critical velocities. The analyses carried out enable to reach results and draw conclusions directly related to the knowledge of ground vibrations induced by high-speed trains.
Journal: Computers & Structures - Volume 87, Issues 19–20, October 2009, Pages 1224–1232