EXPERIMENT FOR IMPROVEMENT OF CALCULATION PRECISION OF WAVE FIELD USING THIN LAYERED ELEMENT METHOD AND PERFECTLY MATCHED LAYER

Abstract

Thin layered element method (TLM) is an efficient way for computation of Green’s functions. However, it requires unbounded domain represented by an absorbing boundary or layer. A perfectly matched layer (PML) is one of the highest accuracy techniques to absorb outgoing waves from a bounded domain. In this paper, I apply the PML to the TLM in order to improve calculation precision of elastic wave field in a layered half-space. The accuracy of this method is examined by comparing its results with theoretical solution. It is found that the PML gives good results when compared to conventional method.