• the force transmissibility of mdof structures with a non-linear viscous damping device

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 766
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     in the present study, the concept of the output frequency response function (ofrf), recently proposed by the authors, is applied to theoretically investigate the force transmissibility of mdof structures with a cubic non-linear viscous damping device. the results analytically show that the introduction of cubic non-linear damping can significantly reduce the transmissibility over all resonance regions for a multiple degree of freedom (mdof) structure and at the same time leave the transmissibility over the isolation region virtually unaffected. the analysis also indicates that a strong linear damping may shift the system resonances and compromise the beneficial effects of cubic non-linear viscous damping on the force transmissibility of mdof structures. this suggests that a less significant linear damping together with a strong cubic non-linear damping can be used in mdof structures to achieve a desired vibration isolation performance. this research work has a significant implication for the design of viscously damped mdof structures for a wide range of practical applications.

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