Bryansk, Bryansk, Russian Federation
Bryansk, Bryansk, Russian Federation
The aim of this work consists in choosing a rational way for the definition of selfresonant frequency in car body bending vibrations of a bilevel car. A test subject is the car body of a bilevel car of the model 61-4465 manufactured by the Company «Tver Wagon Works». The vibration tests of a bilevel car were modeled. Test results were compared to the data of actual test and a computation on the recommendations of regulations. There is developed a lamellar finite-element model of a bilevel car carcass with its stiffness corresponding to a real car body. The assessment of selfresonant frequency in car body bending vibrations was carried out on basis of three variants of its model differed with the distribution of car body gross weight: uniformly throughout the whole of metalware; throughout the parts of metalware in accordance with mass position in a real car; taking into account the influence of partition rigidity in compartments and service rooms. The comparison of modeling results with the use of models described and results of actual tests shows their satisfactory correspondence that allows approaching to dynamic values of a real car body at the investigation of its loading by the methods of computer simulation.
bilevel car, elastic car body, dynamic model, mathematic modeling, finite element, vibration test, selfresonant frequency, bending vibrations.
1. Standards for Computation and Design of New and Rebuilt Railway Cars of RM with Railway Track of 1520 mm (non-self-propelled). - M.: VNIIV-VNIIRT, 1983. - pp. 260.
2. Company “Tver Wagon Works”. - Access Mode: http://www.tvz.ru/.
3. Shimkovich, D.G., Design Calculation in MSC/NASTRAN for Windows/D.G. Shimkovich. - М.: DMK Press, 2001. - pp. 448.
4. Lebedev, V.A., Stresses in elements of bilevel car/ V.A. Lebedev, N.A. Zaglyadov // World of Trans-port. - 2012. - No 6.
5. Bilevel sleeping car of model 61-4465. Definition of Mass and Coordinates of Body Center of Gravity: SRW Report. - Tver: Tver Wagon Works. 2010. - pp. 38.
6. Preliminary tests. Metalware of bilevel sleeping car of model 61-4465. Definition of Self-Resonant Fre-quency of Bending Vibrations: SRW Report. - Tver: Tver Institute of Carriage Engineering. 2012. - pp. 11.
7. Korshunov, S.D., Current test methods of rolling-stock subjected to various kinds of repair and re-built/ S.D. Korshunov, S.L Samoshkin// Car Fleet. - 2012. - No 7.- pp. 15-18.
8. RD 24.050.37-95. Freight and Passenger Cars. Test Methods for Strength and Ride performance. - M.: State SII of Carriage Engineering, 1995. - pp. 100.
9. ARS 24.050.37. Motion Smoothness. - M.: Sta-teSII of Carriage Engineering. 1995. - pp. 10.
