DETERMINATION OF THE INHOMOGENEITY PARAMETERS OF A SPHERE’S COVER ENSURING REQUIRED SOUND REFLECTION IN A WAVEGUIDE
| Autor: | Sergey Alekseevich Skobeltsyn, Nikita Yurievich Peshkov |
|---|---|
| Jazyk: | němčina |
| Rok vydání: | 2021 |
| Předmět: |
Physics
geography geography.geographical_feature_category 010504 meteorology & atmospheric sciences business.industry цилиндрический волновод 010502 geochemistry & geophysics экстремальное среднее давление 01 natural sciences функция формы Optics рассеянное поле потенциал смещений метод конечных элементов алгоритм хука - дживса Reflection (physics) Waveguide (acoustics) T1-995 Cover (algebra) однородный упругий (абсолютно жесткий неподвижный) шар business параметры неоднородности упругого покрытия Sound (geography) Technology (General) 0105 earth and related environmental sciences |
| Zdroj: | Globus: технические науки, Vol 7, Iss 2(38), Pp 4-21 (2021) |
| ISSN: | 2713-3079 |
| Popis: | The numerical-analytical method of identifying the inhomogeneity parameters of a material of a sphere’s elastic cover, which allow to ensure minimal (maximal) average pressure in the scattered field of a spherical sound wave, which is radiated by a monopole source, within the disk observation domain in a cylindrical waveguide, has been developed. The sphere is assumed to be either absolutely rigid (moveless) or filled with an homogeneous elastic material. Verification of the scheme for determining the cover’s extremal inhomogeneity characteristics has been carried out and influence of the solution algorithm’s launch parameters on their identification accuracy during the numerical experiment has been evaluated. The finite element method (FEM) and the Hooke-Jeeves algorithm are used in the problem solving. |
| Databáze: | OpenAIRE |
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