期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：153
期号：4
页码：042003
DOI：10.1088/1755-1315/153/4/042003
语种：English
出版社：IOP Publishing
摘要：As an important supplement and development of mesh method numerical calculation, meshfree method is a kind of new numerical algorithm in last decade. Point interpolation method(PIM), as a simple and efficient meshfree method, avoids the mesh generation and has obtained many good results in the field of computational mechanics. This paper devotes PIM to magnetotelluric three-dimensional forward modeling, introduces the approximate principle of PIM in detail, and deduces the discrete system matrix expression which corresponding to the magnetotelluric three-dimensional variational problem by combining the Galerkin method and the gauss integral formula, then the boundary conditions of loading technique is briefly introduced. The effectiveness of three-dimensional PIM is verified by the numerical calculation of several models.
