[article]
| Titre : |
Scattering of SH waves by truncated semicircular canyon |
| Type de document : |
texte imprimé |
| Auteurs : |
Tsaur, Deng-How, Auteur ; Chang, Kao-Hao, Auteur |
| Article en page(s) : |
pp. 862-870 |
| Note générale : |
Mécanique appliquée |
| Langues : |
Anglais (eng) |
| Mots-clés : |
Canyons Displacement Surface properties Ground motion Seismic waves. |
| Résumé : |
The judicious region-matching technique is adopted to derive a series solution for shear horizontal waves scattering from a truncated semicircular canyon on the ground surface. A circular-arc auxiliary boundary is introduced to divide the analyzed region into two subregions. The antiplane motion of each subregion is represented in terms of an infinite series of cylindrical wavefunctions with unknown coefficients. By employing the Graf's addition formula, boundary conditions on the curved canyon surface and continuity conditions on the auxiliary boundary, the unknown coefficients can be determined. Two modifications of the present theoretical derivation are done for the semicircular canyon and free surface cases. The plotted results reveal how the surface displacement amplitudes are influenced by varying the truncation depth. |
| DEWEY : |
620.1 |
| ISSN : |
0733-9399 |
| En ligne : |
http://ascelibrary.aip.org/vsearch/servlet/VerityServlet?KEY=JENMDT&smode=strres [...] |
in Journal of engineering mechanics > Vol. 135 N° 8 (Août 2009) . - pp. 862-870
[article] Scattering of SH waves by truncated semicircular canyon [texte imprimé] / Tsaur, Deng-How, Auteur ; Chang, Kao-Hao, Auteur . - pp. 862-870. Mécanique appliquée Langues : Anglais ( eng) in Journal of engineering mechanics > Vol. 135 N° 8 (Août 2009) . - pp. 862-870
| Mots-clés : |
Canyons Displacement Surface properties Ground motion Seismic waves. |
| Résumé : |
The judicious region-matching technique is adopted to derive a series solution for shear horizontal waves scattering from a truncated semicircular canyon on the ground surface. A circular-arc auxiliary boundary is introduced to divide the analyzed region into two subregions. The antiplane motion of each subregion is represented in terms of an infinite series of cylindrical wavefunctions with unknown coefficients. By employing the Graf's addition formula, boundary conditions on the curved canyon surface and continuity conditions on the auxiliary boundary, the unknown coefficients can be determined. Two modifications of the present theoretical derivation are done for the semicircular canyon and free surface cases. The plotted results reveal how the surface displacement amplitudes are influenced by varying the truncation depth. |
| DEWEY : |
620.1 |
| ISSN : |
0733-9399 |
| En ligne : |
http://ascelibrary.aip.org/vsearch/servlet/VerityServlet?KEY=JENMDT&smode=strres [...] |
|
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