دوره 4، شماره 3 - ( 6-1393 )                   جلد 4 شماره 3 صفحات 812-826 | برگشت به فهرست نسخه ها


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Younesian D, Fallahzadeh M S. Numerical and Experimental Analysis of Nonlinear Parabolic Springs Employed in Suspension System of freight cars. IJAE. 2014; 4 (3) :812-826
URL: http://www.iust.ac.ir/ijae/article-1-279-fa.html
Numerical and Experimental Analysis of Nonlinear Parabolic Springs Employed in Suspension System of freight cars. مجله علمی پژوهشی مهندسی خودرو . 1393; 4 (3) :812-826

URL: http://www.iust.ac.ir/ijae/article-1-279-fa.html


چکیده:   (2135 مشاهده)
Nonlinear vibration of parabolic springs employed in suspension system of a freight car has been studied in this paper. First, dynamical behavior of the springs is investigated by using finite element method and the obtained results are then used in vibration analysis of a railway freight car. For this purpose, dynamics of a parabolic spring subjected to a cyclic excitation has been studied in the frequency range of 2 to 15 Hz. By utilizing an experimental setup, equivalent static and dynamic stiffness and damping of the spring have been obtained and compared with theoretical results. Different classes of rail irregularities are taken into account to excite the vehicle. Bond Graph method is employed to extract the equations of motion of the system and validity of the obtained equations is investigated. Finally, a parametric study is carried out and the influence of vehicle velocity and rail irregularity on vertical acceleration of the freight car has been examined.
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نوع مطالعه: پژوهشي | موضوع مقاله: عمومى
دریافت: ۱۳۹۳/۸/۲۰ | پذیرش: ۱۳۹۳/۸/۲۰ | انتشار: ۱۳۹۳/۸/۲۰

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