Efficient Numerical Modelling of Absorbing Regions for Boundaries Of Guided Waves Problems

Abstract

This paper presents a method of modelling guided waves propagation with Finite Elements using frequency domain analysis and absorbing regions. These regions are placed at the extremities of the models and can absorb guided waves, thus avoiding reflections from the boundaries. Guidelines for efficient definition of these regions are discussed. Typical case studies are presented in order to validate the process. This method will benefit the modelling of large problems such as the interaction of guided waves with complex 3D defects in complex 3D structures.