The 3-D non-axisymmetrical Lamb's problem in transversely isotropic saturated poroelastic media
The 3-D non-axisymmetrical Lamb's problem in transversely isotropic saturated poroelastic media作者机构:School of Civil Engineering Xi’an University of Architecture & Technology Department of Civil Engineering Qinghai University
出 版 物:《Science China(Technological Sciences)》 (中国科学(技术科学英文版))
年 卷 期:2004年第47卷第5期
页 面:526-549页
核心收录:
学科分类:0810[工学-信息与通信工程] 08[工学] 080104[工学-工程力学] 0815[工学-水利工程] 0805[工学-材料科学与工程(可授工学、理学学位)] 0702[理学-物理学] 0812[工学-计算机科学与技术(可授工学、理学学位)] 0801[工学-力学(可授工学、理学学位)]
基 金:the National Natural Science Foundation of China (Grant No.56978003)
主 题:transversely isotropic saturated poroelastic media, Biot's wave equations, Lamb's problems.
摘 要:Based on Biots theory on fluid-saturated porous media, the displacement functions are adopted to convert the 3-D Biots wave equations in the cylindrical coordinate for transversely isotropic saturated poroelastic media into two棗one 6-order and one 2-order棗uncoupling differential governing equations. Then, the differential equations are solved by the Fourier expanding and Hankel integral transform method. Integral solutions of soil skeleton displacements and pore pressure as well as the total stresses for poroelastic media are obtained. Furthermore, the systematic study on Lambs problems for the transversely isotropic saturated poroelastic media is performed. Integral solutions for surface radial, vertical and circumferential displacements are obtained in both cases of drained surface and undrained surface under the vertical and horizontal harmonic excitation force. In the end of this paper, the numerical examples are presented. The calculation results indicate that the difference between the model of isotropic saturated poroelastic media and that of transversely isotropic saturated poroelastic media is obvious.