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Article Dans Une Revue Journal of Sound and Vibration Année : 2018

Modelling nonlinear viscoelastic behaviours of loudspeaker suspensions-like structures

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Résumé

Mechanical properties of an electrodynamic loudspeaker are mainly determined by its suspensions (surround and spider) that behave nonlinearly and typically exhibit frequency dependent viscoelastic properties such as creep effect. The paper aims at characterizing the mechanical behaviour of electrodynamic loudspeaker suspensions at low frequencies using nonlinear identification techniques developed in recent years. A Generalized Hammerstein based model can take into account both frequency dependency and nonlinear properties. As shown in the paper, the model generalizes existing nonlinear or viscoelastic models commonly used for loudspeaker modelling. It is further experimentally shown that a possible input-dependent law may play a key role in suspension characterization.
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Dates et versions

hal-02504394 , version 1 (10-03-2020)

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Balbine Maillou, Pierrick Lotton, Antonin Novak, Laurent Simon. Modelling nonlinear viscoelastic behaviours of loudspeaker suspensions-like structures. Journal of Sound and Vibration, 2018, 416, pp.213-223. ⟨10.1016/j.jsv.2017.11.046⟩. ⟨hal-02504394⟩
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