Technológ - Ročník 15.; Číslo 5/2023
Permanent URI for this collectionhttps://drepo.uniza.sk/handle/hdluniza/1004
Browse
Search Results
Item Determination of the dynamic load of an improved hatch cover of an open wagon during operating modes(University of Žilina, 2023) Lovska, Alyona; Gerlici, Juraj; Dižo, Ján; Blatnický, Miroslav; Ishchuk, VadymThe article presents the results of determining the dynamic load of the improved cover of an open wagon under operational conditions. The peculiarity of the manhole cover is that the canvas is formed by the upper and lower sheets, between which, there is an energy-absorbing material with viscous properties. The dynamic load of the cover when a load of 150 kg falls on it was studied. It was determined, that the use of energy-absorbing material contributes to the reduction of the cover load by 21 % compared to a typical original design. The main indicators of the dynamics of an open wagon equipped with improved manhole covers are calculated. The results of the calculations showed that the studied dynamic indicators are within the permissible limits. The conducted studies will contribute to the reduction of damage to manhole covers during operation and the cost of maintaining one wagons.Item Štúdia vplyvu medziadaptéra na dynamické zaťaženie nosnej konštrukcie plošinového vozňa(University of Žilina, 2023) Lovska, Alyona; Gerlici, Juraj; Dižo, Ján; Ishchuk, VadymIn order to reduce the dynamic load of the platform wagon, it is proposed to use an intermediate adapter between the frame and the load. The reduction of dynamic loads is carried out due to the dissipative forces that arise in the adapter when the wagon bounces. The results of mathematical modeling of the vertical loading of the platform wagon are given, taking into account the proposed solution. It was established that the accelerations acting on the supporting structure of the platform wagon are reduced by 8.5 % compared to the typical one. The acceleration acting on the load placed on the frame of the platform wagon is 11.8 % lower than that acting on it, taking into account the typical load perception scheme. The peculiarities of determining the strength of the adapter under its vertical load are highlighted. The conducted research will contribute to the creation of developments in the design of modern structures of railway vehicles.Item Odvodenie matematického modelu hnacieho mechanizmu pre pohon prídavných zariadení dopravného prostriedku(University of Žilina, 2023) Dižo, Ján; Ishchuk, Vadym; Lovska, Alyona; Blatnický, Miroslav; Molnár, DenisThe article is focused on a derivation of a mathematical model of a drive mechanism of for a drive of an additional devices of a transport mean. Additional devices are inseparable part of lorries, buses as well as railway vehicles, such as locomotives with independent traction. These additional devices serve for drive of compressors or other similar devices. The mathematical model is derived by means of the Lagrange’s quations of the second kind method. After finding the energies, the method of the reduction of mass and force quantities to the chosen part. In this case, it is reduced to the drive shaft of the considered mechanism. The presented mechanism is described by means of one equation of motion. This equation can be solved by means of the Matlab software. The last part of the article additional includes illustrations of the solved mechanism created in the Simpack multibody software, which can be analysed and the results can be compared with the results obtained from the Matlab software.