摘要
The development of a hybrid iterative model Fourier integral-Boundary Element Method for the numerical modelization of the interaction of a bounded ultrasonic beam with a fluid/solid structure is described. The fluid and solid media are semi-infinite and separated by a plane interface. The beam is generated in the fluid by a plane transducer. The solid includes a finite defect. The bounded beam is modelized by the method of decomposition into plane waves by using a spatial Fourier transform. The scattering problem due to the defect is solved by a Boundary Element Method (BEM). In order to take the successive interactions with the interface and with the defect into account, an iterative method is implemented.
- 出版日期2017-4