Dynamic response of a beam on a Pasternak foundation and under a moving load |
| |
| Authors: | CAO Chang-yong and ZHONG Yang |
| |
| Institution: | School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116024, P.R.China |
| |
| Abstract: | The dynamic response of an infinite beam placed on a Pasternak foundation when the system was subjected to a moving load was investigated. We used the double Fourier transform and its inversion to solve the formulations of the problem. A closed form analytic solution of the beam was obtained by the theorem of residues. We selected a numerical example to illustrate the dynamic response of the beam on Pastemak and Winkler foundations, respectively. We discuss the effect of the moving load velocity on the dynamic displacement response of the beam. The maximum deflection of the beam increases slightly with increased load velocity but increases significantly with reduced shear modulus of subgrade at a given velocity. The maximum deflection of a beam resting on a Pastemak foundation is much smaller than that of a beam on a Winkler foundation. |
| |
| Keywords: | dynamic response beam Pastemak foundation moving load complex anysis |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《重庆大学学报(英文版)》浏览原始摘要信息 |
| 点击此处可从《重庆大学学报(英文版)》下载免费的PDF全文 |
