On The Choice of an Algorithm for Optimizing the Parameters of Spring Flashing of Rail Crews

AN Savoskin*
Russian University of Transport (MIIT), Moscow, Russia
*Corresponding Author: AN Savoskin, Russian University of Transport (MIIT), Moscow, Russia.

Published: July 27, 2023

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Abstract  

Indicators of the quality of functioning of the rail crew with given mass and, as m_i well as geometric characteristics, are completely determined by the parameters of its spring suspension − spring stiffness J_i and attenuation coefficients ofvibration dampers. When choosing these parameters, it should be borne in mind that they have an ambiguous effect on the dynamic properties of the crews and, consequently, on their quality indicators. On the one hand, an increase in the coefficient attenuation reduces the amplitudes of the coordinate and improves the safety factor of the structural deflection of the springs. On the other hand, such a decrease leads to an increase in active forces in spring suspension and, especially, accelerations in the resonant region, which worsens such quality indicators u_i (where i = 1, 2, …, n) as maximum body accelerations and dynamic overload coefficients.