Abstract:The aim of the article is to present the necessity of completion of the test stand of brake components of railway vehicles with the equivalent railway operation load simulator for the research of the wheel wear on it. The other aim of presented research needs is to perform the analysis of the equivalent conicity as a parameter for the rail vehicles in operation ride properties prediction. The sub aims are the change of frame, wheel, braking forces load via SIMRAIL simulator program load collection performance.
“…Researches must pay attention to studying the effects of thermal and mechanical loading wheels of railway vehicles of reasons: the operation of vehicles, protection of life and health of the traveling public, reliable transport material and minimizing the negative effects of rail traffic on the environment [10,25].…”
Abstract. The article deals with detection of reduced stress in a braked railway wheel, based on thermal transient analysis on virtual models, which influence the characteristics of the railway wheels. Structural analysis was performed by means of the ANSYS Multiphysics program system package. Thermal transient analysis deals with detection of temperature fields which are a result of braking by brake block. The applied heat flux represents the heat generated by friction of brake block. It is applied to a quarter model of the wheel to speed up the calculation. This analysis simulates two braking processes with subsequent cooling. Distribution of the equivalent stress was detected in the railway wheel cross section, at selected points. The input parameters were taken from the thermal transient analysis. These equivalent stresses result from thermal load.
“…Researches must pay attention to studying the effects of thermal and mechanical loading wheels of railway vehicles of reasons: the operation of vehicles, protection of life and health of the traveling public, reliable transport material and minimizing the negative effects of rail traffic on the environment [10,25].…”
Abstract. The article deals with detection of reduced stress in a braked railway wheel, based on thermal transient analysis on virtual models, which influence the characteristics of the railway wheels. Structural analysis was performed by means of the ANSYS Multiphysics program system package. Thermal transient analysis deals with detection of temperature fields which are a result of braking by brake block. The applied heat flux represents the heat generated by friction of brake block. It is applied to a quarter model of the wheel to speed up the calculation. This analysis simulates two braking processes with subsequent cooling. Distribution of the equivalent stress was detected in the railway wheel cross section, at selected points. The input parameters were taken from the thermal transient analysis. These equivalent stresses result from thermal load.
“…Nevertheless every intervention in the load-bearing construction requires a through strength calculations supported by experimental measurements on test benches [15,16]. The bogie frame is the main carrying part of the bogie.…”
Section: Description Of the Solved Freight Wagon Bogiementioning
Abstract. This paper presents results of selected load cases for the modified freight wagon bogie frame. It comprises of two main parts. The first part is addressed to the introduction of a modified freight wagon bogie. There are described conditions for rail vehicles approval and mainly load cases which every bogie must meet for commissioning. The next part deals with computer modelling and analyses of a frame of this modified freight wagon bogie. It was analysed using the FE method and calculations were focused on the assessment of stresses of the frame structure under exceptional load. Calculation conditions were based on valid standards.
“…4 left) we launched calculation. After its successful running we checked analysis results in PostProcessor modulus of Adina software [9][10][11][12].…”
Section: Strength Analysis Of the Structurementioning
Abstract:In this article the strength analyses of weights boxes are presented. Boxes are designed as a welded steel structure at which weights with total mass almost ten tons are stored in them. These boxes are an integral part of a mechanism intended for calibration of the mass measurement device.The article contains on one hand the basic scope of the theory of elasticity and strength analysis and on the other hand the numerical computations of the structure by using the Finite Element Method.Based on results the structure of weights boxes was modified in order to satisfy the defined safety factor.
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