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Record Nr. |
UNINA9910704918103321 |
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Autore |
Yoerkie C. A. |
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Titolo |
Development of rotorcraft interior noise control concepts : phase III, development of noise control concepts / / C.A. Yoerkie [and three others] |
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Pubbl/distr/stampa |
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Stratford, CT, : United Technologies Corporation, Sikorsky Aircraft Division |
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Cambridge, MA : , : Cambrldge Collaborative, Inc. |
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Hampton, Va. : , : National Aeronautics and Space Administration, Langley Research Center, , [1987] |
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Descrizione fisica |
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1 online resource (x, 137 pages) : illustrations |
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Collana |
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NASA contractor report ; ; 178172 |
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Soggetti |
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Aircraft compartments |
Aircraft noise |
Helicopters |
Noise prediction (aircraft) |
Noise reduction |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Title from title screen (viewed on Dec. 19, 2013). |
"July 1987." |
"Performing organization ... Sikorsky Aircraft Division, United Technologies Corporation"--Technical report page. |
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Nota di bibliografia |
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Includes bibliographical references (page 120). |
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2. |
Record Nr. |
UNINA9910808468603321 |
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Autore |
Jesenko Martin |
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Titolo |
Commutability of Gamma-limits in problems with multiple scales / / Martin Jesenko |
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Pubbl/distr/stampa |
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Berlin : , : Logos Berlin, , [2017] |
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©2017 |
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ISBN |
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Descrizione fisica |
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1 online resource (145 pages) : illustrations |
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Collana |
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Augsburger Schriften zur Mathematik, Physik und Informatik ; ; Band 33 |
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Disciplina |
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Soggetti |
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Homogenization (Differential equations) |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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PublicationDate: 20170515 |
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Sommario/riassunto |
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Long description: In the calculus of variations, the goal is to explore extrema of a given integral functional. From origins of the problem, it might be expected that the functional can be adequately simplified by neglecting some small quantities. A way to rigorously justify such an approximation is the Gamma-convergence that ensures convergence of corresponding (global) extrema. The main motivation of this work is to investigate properties of doubly indexed integral functionals that Gamma-converge for one index fixed. In other words, for two possible approximations we would like to determine whether we may perform them consecutively and if they commute. Our examples are taken from material science with homogenization being one of these two processes. In the first part we are considering a setting related to the elastic regime. However, our assumptions are fairly general and allow for applications in different areas. The second part is devoted to problems in the Hencky plasticity. They are considerably different due to special growth properties of the density. |
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