详细信息   

• 责任者：Li Weihua (School of Civil Engineering ; Beijing Jiaotong University ; Beijing 100044 ; China) ; Liu Qinhua
• 刊名：Chinese Journal of Geophysics
• 出版年：2010
• 卷期：53(10)
• 关键词：多孔介质 ; porous medium ; 弹性波 ; elastic waves
• 页码：p.2460-2469
• 图表：6 illus., 1 table, 15 refs.
• 分类号：1600
• issnNo：ISSN0001-5733
• isbnNo：CN11-2074/P

摘要

Based on Blot’s dynamic theory for saturated porous media and the constitutive equations of poro elastic media, this paper discusses the normal and tangential stress formulae on the artificial boundary of sphere shapes under the assumption of out-going spherical waves, and constitutes the three dimensional viscous spring boundaries in time domain for saturated porous media. According to the dynamic analysis of saturated porous media by using explicit finite element method, this paper develops the finite element method that could solve the three dimensional problems, and develops finite element program. The analysis of the saturated porous medium dynamic response indicates that the combination method of the explieit finite element method and the three dimensional viscous spring boundary enjoy good accuracy and good stability.