Nouvelles propriétés des courbes et relations de dispersion en élasticité linéaire
In the case of an elastic strip we exhibit two properties of dispersion curves , that were not pointed out previously. We show cases where and we point out that these curves are not automatically monotoneous on . The non monotonicity was an open question (see [2], for example) and, for the first time, we give a rigourous answer. Recall the characteristic property of the dispersion curves: {} is the set of eigenvalues of , counted with their multiplicity. The operators , , are...
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