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SCATTERING OF A PLANE HARMONIC SH-WAVE AND DYNAMIC
STRESS CONCENTRATION FOR MULTIPLE MULTILAYERED
INCLUSIONS EMBEDDED IN AN ELASTIC HALF-SPACE
by
Ramtin Sheikhhassani
A Dissertation Presented to the
FACULTY OF THE USC GRADUATE SCHOOL
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Ful llment of the
Requirements for the Degree
DOCTOR OF PHILOSOPHY
(Mechanical Engineering)
May 2015
Copyright 2015 Ramtin Sheikhhassani
Object Description
| Title | Scattering of a plane harmonic SH-wave and dynamic stress concentration for multiple multilayered inclusions embedded in an elastic half-space |
| Author | Sheikhhassani, Ramtin |
| Author email | sheikhha@usc.edu;rumtin@gmail.com |
| Degree | Doctor of Philosophy |
| Document type | Dissertation |
| Degree program | Mechanical Engineering |
| School | Viterbi School of Engineering |
| Date defended/completed | 2015-03-23 |
| Date submitted | 2015-04-22 |
| Date approved | 2015-04-22 |
| Restricted until | 2015-04-22 |
| Date published | 2015-04-22 |
| Advisor (committee chair) | Dravinski, Marijan |
| Advisor (committee member) |
Sadhal, Satwindar S. Redekopp, Larry G. Lee, Vincent W. |
| Abstract | The scattering of a plane harmonic SH-wave by an arbitrary number of layered inclusions in a half-space is investigated bya direct boundary integral equation method. The inclusions, which have arbitrary shape and arrangement, are embedded within an elastic half-space. The effects of multiple scattering, the geometry, and the impedance contrast of the materials for layered inclusions and pipes, on the surface motion, are considered in detail. ❧ Additionally, a non-hypersingular technique is employed to calculate the dynamic stress concentration factor along the interfaces of inclusions. Various contributing factors that can influence the stress concentration, including multiple scattering, the impedance contrast of layers, and the separation distance between the scatterers, are investigated. The numerical results are presented for a wide range of parameters present in the problem. |
| Keyword | multiple scattering; dynamic stress concentration factor; wave propagation; layered inclusions; elastic waves; anti-plane strain; non-hypersingular boundary element method |
| Language | English |
| Format (imt) | application/pdf |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Provenance | Electronically uploaded by the author |
| Type | texts |
| Legacy record ID | usctheses-m |
| Contributing entity | University of Southern California |
| Rights | Sheikhhassani, Ramtin |
| Physical access | The author retains rights to his/her dissertation, thesis or other graduate work according to U.S. copyright law. Electronic access is being provided by the USC Libraries in agreement with the author, as the original true and official version of the work, but does not grant the reader permission to use the work if the desired use is covered by copyright. It is the author, as rights holder, who must provide use permission if such use is covered by copyright. The original signature page accompanying the original submission of the work to the USC Libraries is retained by the USC Libraries and a copy of it may be obtained by authorized requesters contacting the repository e-mail address given. |
| Repository name | University of Southern California Digital Library |
| Repository address | USC Digital Library, University of Southern California, University Park Campus MC 7002, 106 University Village, Los Angeles, California 90089-7002, USA |
| Repository email | cisadmin@lib.usc.edu |
| Filename | etd-Sheikhhass-3372.pdf |
| Archival file | Volume2/etd-Sheikhhass-3372.pdf |
Description
| Title | Page 1 |
| Repository email | cisadmin@lib.usc.edu |
| Full text | SCATTERING OF A PLANE HARMONIC SH-WAVE AND DYNAMIC STRESS CONCENTRATION FOR MULTIPLE MULTILAYERED INCLUSIONS EMBEDDED IN AN ELASTIC HALF-SPACE by Ramtin Sheikhhassani A Dissertation Presented to the FACULTY OF THE USC GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Ful llment of the Requirements for the Degree DOCTOR OF PHILOSOPHY (Mechanical Engineering) May 2015 Copyright 2015 Ramtin Sheikhhassani |
