Dynamic response of an infinite beam overlying a layered poroelastic half-space to moving loads

✍ Scribed by Bin Xu; Jian-Fei Lu; Jian-Hua Wang

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 518 KB
• Volume: 306
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1016/j.jsv.2007.05.031

✦ Synopsis

Dynamic response of an infinite beam resting on a layered poroelastic half-space subjected to moving loads is investigated in this study. The equivalent stiffness of the layered poroelastic half-space is obtained via the transmission and reflection matrices (TRM) method in the frequency wavenumber domain. Based on the obtained equivalent stiffness, the frequency wavenumber domain solution of the beam-half-space system is obtained by the compatibility condition between the beam and the half-space. The time domain solution for the beam and the layered half-space is obtained by means of the inverse Fourier transform method. Also, the influences of the load speed and material parameters of the poroelastic halfspace on the responses of the beam as well as the layered half-space are investigated. In order to demonstrate the proposed method, some time-space domain examples and corresponding analysis are presented in the paper.