间接边界元法的物理表述

根据两类位势层的物理意义,得到了边界元法的直接法与间接法的统一公式.不同学科中采用的间接法在表达式的形式上是一致的.因此,有共同的原理。对于同一物理现象,采用不同性质的点源,可以得到不同的基本解,从而,形成间接法中的两种不同方法.经过统一处理,还可编制实用的计算机程序.

Physical Expression of Indirect Types of Boundary Element Method

Depending on the physical meanings of two different potential layers,aunified formula is developed by a source approach or dipole approach to expressboth the direct and indirect types of boundary element method.The resultsfrom that various indirect methods used in different fields are conformablein expression form with the same principle.For a physical phenomenon,therewill be some different foundamental solutions when using different pointsources,thus forming the two different indirect methods,i.e.,the stressdiscontinuity and the displacement discontinuity.The unified formula is alsoconvenient to program.