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نمایش تعداد 1-8 از 8

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    Investigating Vibratory Behavior of Nonlinear Single Unit Impact Dampers Using Perturbation Method and Genetic Algorithm 

    نوع: Journal Paper
    نویسنده : J.E.Jam; عارف افشارفرد; Aref Afsharfard
    سال: 2012
    خلاصه:

    damper consisting of a pendulum and an elastic barrier. Our model incorporates Hertzian contact between the spherical steel pendulum and the barrier. In next step, due to the strong non-linearity of the model, Homotopy Perturbation and iteration...

    Application of nonlinear magnetic vibro-impact vibration suppressor and energy harvester 

    نوع: Journal Paper
    نویسنده : عارف افشارفرد; Aref Afsharfard
    سال: 2017
    خلاصه:

    In the present study, application of a single unit vibro-impact system is improved. For this reason, in the so-called “magnetic impact damper” the impact mass is replaced by a permanent magnet, which moves in coil of gap ...

    Design of Nonlinear Impact Dampers Based on Acoustic Behavior 

    نوع: Conference Paper
    نویسنده : عارف افشارفرد; انوشیروان فرشیدیان فر; Aref Afsharfard; Anoshirvan Farshidianfar
    سال: 2011
    خلاصه:

    radiated from an impact oscillator that incorporates the Hertzian contact will be analyzed. Transient sound generated from the impact of a sphere with a reflecting plane will be obtained theoretically. The calculated results can be verified with previous...

    Investigating Application of Impact Dampers Using Homotopy Perturbation and Genetic Algorithm 

    نوع: Conference Paper
    نویسنده : انوشیروان فرشیدیان فر; عارف افشارفرد; Anoshirvan Farshidianfar; Aref Afsharfard
    سال: 2010
    خلاصه:

    the behaviour of a kind of impact dampers. Our model incorporates Hertzian contact between the impact mass and the barrie. In next step, due to the strong non-linearity of the model, Homotopy Perturbation method is used to solve the governing equation...

    Design of nonlinear impact dampers based on acoustic and damping behavior 

    نوع: Journal Paper
    نویسنده : عارف افشارفرد; انوشیروان فرشیدیان فر; Aref Afsharfard; Anoshirvan Farshidianfar
    سال: 2012
    خلاصه:

    In the present study, mathematical model of the sound radiated from an impact oscillator that

    incorporates the Hertzian contact is analyzed. Transient sound generated from the contact of a sphere

    with a reflecting plane is obtained...

    An efficient method to solve the strongly coupled nonlinear differential equations of impact dampers 

    نوع: Journal Paper
    نویسنده : عارف افشارفرد; انوشیروان فرشیدیان فر; Aref Afsharfard; Anoshirvan Farshidianfar
    سال: 2012
    خلاصه:

    example. In doing so, the coupled nonlinear differential equations of an impact

    oscillator, which incorporates the Hertzian contact, are derived. To investigate this problem, an object-oriented computer code, based on the presented method...

    Input-series-output-parallel connected converter with single-phase UPF buck-rectifier 

    نوع: Conference Paper
    نویسنده : Samanta, S. , Chaudhary, P. , Sensarma, P.
    ناشر: IEEE
    سال: 2014

    Evaluation of Die Strength by Using Finite Element Method With Experiment Validation 

    نوع: Journal Paper
    نویسنده : Pei-Chi Chen; Yen-Fu Su; Shin-Yueh Yang; Chang-Chun Lee; Kuo-Ning Chiang
    ناشر: IEEE
    سال: 2014

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