MATHEMATICAL-MODELING OF VIBRATIONS AND LOADING OF RAILWAY TANKS TAKING INTO ACCOUNT THE LIQUID CARGO MOBILITY

Dynamics and loading of railway tank cars transporting liquid cargo ar e investigated. The approach based on the mechanical-pendulum analogy for the liquid cargo mobility simulation is proposed. Hydrodynamic par ameters of the mechanical analogy are determined using the solution of the boundary-value problem for the liquid cargo vibrations in a cavit y with the tank boiler shape. The fitting of the developed mathematica l models is proved by comparison of calculated results and test data. Vibration characteristics and loading of tank-cars under their shunt c ollisions and motion along straight and curved track in trains are eva luated. It is shown that as a rule the liquid cargo mobility has an es sential influence bn tank dynamic properties.