期刊
COMPUTERS AND GEOTECHNICS
卷 119, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compgeo.2019.103223
关键词
Confined seepage; Finite element method; Free surface; Radial point interpolation method; Unconfined seepage
类别
资金
- National Natural Science Foundation of China [51709258]
- CAS Pioneer Hundred Talents Program
An improved FE-Meshfree method, formulated as a combination of finite element method (FEM) and radial point interpolation method (RPIM), has been proposed in this paper, aiming for obtaining a more accurate and robust solution for steady seepage problems. Two main aspects are mainly investigated: firstly, the traditional cell-based discretization and assembly procedure as normally seen in FEM is replaced by a support domain based one, which potentially improves the computed results with a higher tolerance with the mesh distortion; secondly, an adaptation procedure of inserting extra field nodes on the boundaries/interfaces is proposed and incorporated, which shows an improved computational accuracy and stability. The superiority of the method is demonstrated via some applications to both confined and unconfined seepage problems.
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