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Browsing by Subject "graded material"

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    Item type:Article, Access status: Open Access ,
    Modelling of matrix degradation in piezocomposite actuators using graded material approximation
    (Wydawnictwa AGH, 2009) Pietrzakowski, Marek
    The work deals with modelling of material degradation in piezoelectric fiber composite (PFC) layers, which operate as actuators in active laminated plates. The considered degradation process concerns reduction of the matrix material stiffness and is described based on the functionally graded material approach. It is assumed that distribution of the matrix damage, which develops at the outer surface of the actuator layer and progresses toward its inner part, can be approximated according to a power function. The dynamic analysis and calculations are focused on changes in the natural frequencies and amplitude-frequency characteristics of the active laminated plate depending on the degradation level.