Wave propagation in a three-dimensional half-space with semi-infinite irregularities

• Published in: Waves in random and complex media Vol. 34; no. 4; pp. 3305 - 3324
• Main Authors: Daneshyar, A., Sotoudeh, P., Ghaemian, M.
• Format: Journal Article
• Language: English
• Published: Abingdon Taylor & Francis 03.07.2024; Taylor & Francis Ltd
• Subjects: Complex systems; effective force method; Exact solutions; Half spaces; Incidence angle; inclined SH wave; irregular media; Irregularities; Methodology; Numerical methods; Numerical models; Seismic simulation; Seismic waves; SH waves; Three dimensional analysis; Wave propagation
• ISSN: 1745-5030; 1745-5049
• DOI: 10.1080/17455030.2021.1974602

Dynamic analysis of problems with complex geometries requires utilization of numerical methods. To completely capture the effects of seismic wave propagation in a system, one must consider the structure or irregularity within its encompassing half-space. Correct consideration of half-space in a numerical model is important specially when it comes to cases where the half-space contains semi-infinite irregularities. In this study, a generalized numerical methodology is presented for dynamic analysis of a half-space with semi-infinite irregularities. The methodology is first verified through comparison with analytical solution of known problems. Then the method is employed to solve the dynamic analysis of an arbitrary-shaped existing valley within a half-space under propagating plane harmonic SH wave with different angles of incidence. Results indicate complete capability of the methodology in solving wave propagation problems for complex systems without the usual restrictions of common existing methods.