VIBRODIAGNOSTICS OF METAL RAIL STRANDS FOR DIFFERENT TYPES OF FASTENINGS
Solonenko V. Makhmetova N. Kvashnin M. Ivanovtseva N. Nikolaev V.
2022National Academy of Sciences of the Republic of Kazakhstan
News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences
2022#2022Issue 5238 - 248 pp.
Based on the results of studies of mechanical vibrations of metal rail strands under real reversible moving dynamic load carried out by the authors, the methodology of vibrodiagnostics of rail strands is proposed, allowing to compare the dynamic operation of rail strands with different types of intermediate fasteners. This article compares the joint dynamic operation of metal rail strands with several types of intermediate fasteners used on mainline railroads, and selects the most optimal intermediate fastener design for a particular section of rail strands. The proposed methodology for vibrodiagnostics of metal rail strands includes the following set of indicators assessing the joint dynamic operation of rail strands and fasteners under moving dynamic load:-peak and RMS values of vibration velocity of the metal rail in the center of the inter-tie box and in the middle of the sleeper on the axis of the rail strand, which characterize the bending vibrations of these elements and the mechanical stresses arising in them;-the ratio of movable dynamic forces arising in the middle of the sleeper on the axis of the metal rail thread to the static forces, characterizing the force dynamic impact on the sleeper. The results of the relationship between the vibration parameters of the metal rail under the influence of the moving dynamic load along the various sections of the metal rail strands based on the variation of different types of intermediate fasteners are presented.
intermediate fasteners , metal rail , moving dynamic load , static force , vibration acceleration , vibration displacement , vibration velocity
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Academy of Logistics and Transport, Almaty, Kazakhstan
Omsk State University of Railway Transport, Omsk, Russian Federation
Academy of Logistics and Transport
Omsk State University of Railway Transport
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