Application of the BEM to Elastodynamics in a Three Dimmensional Half Space

by Yoshiji Niwa, Fukui Technical Coll, Sabae, Japan,
Sohichi Hirose, Fukui Technical Coll, Sabae, Japan,

Document Type: Proceeding Paper

Part of: Recent Applications in Computational Mechanics


The boundary integral equations (BIEs) are formulated for scattering problems of elastic waves by a cavity or a crack in a three dimensional half space. Two formulations based on the Green's displacement and traction formulae are shown for the scattering from a cavity. On the other hand, it is demonstrated that only the Green's traction formula is effective for crack problems. In numerical implementation, the BIE entirely free from a singular integral is derived by considering a rigid body translation for any bounded region. Numerical examples are presented for the scattering of elastic waves in a three dimensional half space including a finite cylindrical cavity and are compared with the two dimensional solutions.

Subject Headings: Half space | Boundary element method | Space exploration | Numerical methods | Integrals | Elastic analysis | Wave equations | Cavitation

Services: Buy this book/Buy this article


Return to search