| Autor: |
Ben Ghozlen, Mohamed Hédi, Morched Ben Amor |
| Rok vydání: |
2012 |
| Předmět: |
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| Zdroj: |
Acta Acustica united with Acustica. 98:857-863 |
| ISSN: |
1610-1928 |
| Popis: |
Summary An inverse procedure is proposed to determine the material constants of multi-ply composites using a spectral analysis homogenization method (SAHM). Recursive process gives interfacial displacements and stresses fields in term of deepness. A fast-Fourier transform (FFT) procedure has been used in order to extract the wave numbers propagating in the multilayer. For di erent incidence angle, the upper frequency bound of this homogenization domain is estimated. Inside the homogenization domain, we discover a maximum of three planes waves susceptible to propagate in the medium. The dispersion curves reveal a linear behavior below this frequency limit. A consistent algorithm is adopted to develop an inverse procedure for the determination of the materials constants of multidirectional composite. The extracted wave numbers are used as the inputs for the SAHM model. The outputs of (SAHM) are the elastic constants of multidirectional composite. Using this method, the frequency dependent e ective elastic constants are obtained and example for [0 /90 ] composite is given. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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