Abstract
Fastening of cargo on the car. Calculation of load shift, elongation and forces in elastic elements of fasteners. Describe the parameters of the load and the physical and geometric parameters of the load fastening; give the results of the calculation of the longitudinal forces perceived by the elements of the load fastening. The article uses the basic law of dynamics in relative motion for the non-ideal connection known from theoretical mechanics. The results of the calculation of the longitudinal forces perceived by the load fastening elements, which allowed determining the load shifts along the car, elongation and forces in the flexible fastening elements are presented. Example calculation contributes to the practical application of a new method of calculating the elements of fastening on the car in the development of schemes of placement and fastening of goods of arbitrary geometry. The results of calculations revealed that the accepted value of the coefficient of longitudinal dynamics of the car corresponds to the shunting collision of the car on the hump yard in the marshalling yards.
Highlights
This paper, as well as works [1 – 22], is devoted to problems of fastening of freights on the open rolling stock
Up to date, there are few examples of the application of engineering calculation of the load shift along the car, elongation and effort in the flexible fastening elements by determining the number of fasteners, which would provide guaranteed strength of flexible fastening elements according to the new method [12, 16, 18], which confirms the actual technical problem of securing goods on a railway platform
3 Method of research The research methods are based on the use of the basic law of dynamics in relative motion for non-ideal coupling, known from theoretical mechanics [12]
Summary
This paper, as well as works [1 – 22], is devoted to problems of fastening of freights on the open rolling stock. It should be noted that in [17] does not define shifts of cargo along the car, elongation and efforts in flexible fastening elements, which confirm the incorrectness of the solution of the problem of cargo fastening It is for this reason that in [17] the calculated values of the forces in the fastenings of the goods, both in the longitudinal and transverse directions, regardless of the shape of the cargo and the useful floor space of the car, have the same value, which is not true. Up to date, there are few examples of the application of engineering calculation of the load shift along the car, elongation and effort in the flexible fastening elements by determining the number of fasteners, which would provide guaranteed strength of flexible fastening elements according to the new method [12, 16, 18], which confirms the actual technical problem of securing goods on a railway platform
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