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In relation to the development of a Rolling Wheel Deflectomet er (RWD), which is a non-destructive testing device for measuring pavementdeflections, a finite element model for obtaining the soil/pavement response is developed. Abs orbing boundary conditions are necessary in order to prevent reflections of the waves propaga ting through the soil due to the dynamic loading. The Perfectly Matched Layer (PML) has prov en to be highly efficient when solving transient wave propagation problems in a fixed mesh. H owever, since the RWD is operating at traffic speeds, the load is moving with high speedand a formulation in a moving mesh is therefore more convenient. In this paper, a formulat ion of the PML is developed in the moving frame of reference. Numerical results are presented f or a single layer and a double layer half space, respectively, subjected to a moving load o different velocities.

PERFECTLY MATCHED LAYER (PML) FOR TRANSIENT WAVE PROPAGATION IN A MOVING FRAME OF REFERENCE