دورية أكاديمية
Complex frequency band structure of periodic thermo-diffusive materials by Floquet–Bloch theory
| العنوان: | Complex frequency band structure of periodic thermo-diffusive materials by Floquet–Bloch theory |
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| المؤلفون: | Bacigalupo A., Maria Laura De Bellis, Gnecco G. |
| المساهمون: | A., Bacigalupo, DE BELLIS, MARIA LAURA, G., Gnecco |
| سنة النشر: | 2019 |
| المجموعة: | ARUd'A - Archivio Istituzionale della ricerca dell'università Chieti-Pescara (IRIS) |
| مصطلحات موضوعية: | Band structure, Eigenvalues and eigenfunction, Laplace transform, Linear system, Wave propagation, Angular frequencie, Complex band structure, Eigenvalue problem, Solid oxide fuel cells (SOFC), Multiscale, Computational homogenization, Model, Fluid |
| الوصف: | This work deals with the micromechanical study of periodic thermo-diffusive elastic multi-layered materials, which are of interest for the fabrication of solid oxide fuel cells. The focus is on the dynamic regime that is investigating the dispersive wave propagation within the periodic material. In this framework, a generalization of the Floquet–Bloch theory is adopted, able to determine the complex band structure of such materials. The infinite algebraic linear system, obtained by exploiting both bilateral Laplace transform and Fourier transform, is replaced by its finite counterpart, resulting from a proper truncation at a finite number of considered unknowns and equations. A regularization technique is herein useful to get rid of the Gibbs phenomenon. The solution of the problem is, finally, found in terms of complex angular frequencies, corresponding to a finite sequence of eigenvalue problems for given values of the wave vector. The paper is complemented by numerical examples taking into account thermo-mechanical coupling. The frequency band structure of the periodic thermo-diffusive elastic material is found to be strongly influenced by the interaction between thermal and mechanical phenomena. © 2019, Springer-Verlag GmbH Austria, part of Springer Nature. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | ELETTRONICO |
| اللغة: | English |
| العلاقة: | info:eu-repo/semantics/altIdentifier/wos/WOS:000482455900019; volume:230; issue:9; firstpage:3339; lastpage:3363; numberofpages:25; journal:ACTA MECHANICA; http://hdl.handle.net/11564/721969Test; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85069743065; https://link.springer.com/article/10.1007/s00707-019-02416-9Test |
| DOI: | 10.1007/s00707-019-02416-9 |
| الإتاحة: | https://doi.org/10.1007/s00707-019-02416-9Test http://hdl.handle.net/11564/721969Test |
| حقوق: | info:eu-repo/semantics/closedAccess |
| رقم الانضمام: | edsbas.A46A444F |
| قاعدة البيانات: | BASE |
| DOI: | 10.1007/s00707-019-02416-9 |
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