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Article Dans Une Revue Comptes Rendus Mécanique Année : 2014

Eigenmode sensitivity of damped sandwich structures

Résumé

The modeling of the linear free vibration of a sandwich structure including viscoelastic layers yields a complex nonlinear eigenvalue problem. In this paper, the sensitivity of eigensolutions is computed using a homotopy-based asymptotic numerical method, then a first-order automatic differentiation. The generality of the proposed method enables us to consider any analytical frequency-dependent viscoelastic law in the modeling and the sensitivity computation. Its application potential is demonstrated by computing the sensitivity of eigenmodes, eigenfrequencies and modal loss factors of sandwich beams and plates to various perturbations.
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Dates et versions

hal-01097820 , version 1 (22-12-2014)

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Komlanvi Lampoh, Isabelle Charpentier, El Mostapha Daya. Eigenmode sensitivity of damped sandwich structures. Comptes Rendus Mécanique, 2014, 342, pp.700-705. ⟨10.1016/j.crme.2014.08.001⟩. ⟨hal-01097820⟩
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