Experimental Analysis of Vertical Vibrations of a Railway Bogie

Dumitriu, Mădălina; Cruceanu, Ioan Cristian

doi:10.26552/com.c.2021.4.b299-b307

Cited by 2 publications

(3 citation statements)

References 23 publications

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Section: The Measurement Of the Bogie Vertical Accelerationsmentioning

confidence: 99%

“…It comprises the components of the measurement system, acquisition, and processing of the bogie accelerations, namely four Brüel and Kjaer 4514 accelerometers and the ensemble including the chassis NI cDAQ-9174 for data acquisition and the NI 9234 module for acquisition and synthesizing the data from accelerometers. To monitor and record the vehicle velocity, the receiver GPS NL-602U was used [61][62][63][64]. The four accelerometers are mounted on one side of the front bogie, according to the direction of travel, with one accelerometer on each axle box and one accelerometer on the bogie frame against the suspension of each wheelset.…”

Section: The Measurement Of the Bogie Vertical Accelerationsmentioning

confidence: 99%

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Condition Monitoring of the Dampers in the Railway Vehicle Suspension Based on the Vibrations Response Analysis of the Bogie

Dumitriu

2022

Sensors

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This paper investigates the possibility of developing a new method for fault detection of a damper in the primary suspension of the railway vehicle, based on the analysis of the vertical vibration’s response of the bogie. To this purpose, experimental data are used, along with results from numerical simulations regarding the Root Mean Square (RMS) accelerations measured/simulated in four reference bogie points—two points on the chassis, against the suspension, and two points located against the axle boxes. The experimental data are utilized to define the normal area of operating and the damper failure area in the bogie primary suspension, as well as a basis for validating the results of numerical simulations. The numerical simulations are developed on the basis of two original models of the vehicle–track system, rigid-flexible coupled type, which take into account the elasticity of the vehicle carbody and the elasticity of the wheel-rail contact: a reference model with 15 degrees of freedom, for simulating the bogie response to vertical vibrations for the normal operating of the primary suspension dampers, and an extended model with 20 degrees of freedom, for simulating the bogie vibration response to the failure damper of a primary suspension. The presented results show that there are clear premises on the possibilities of developing a fault detection method of any of the four dampers of the primary suspension corresponding to a vehicle bogie, based on the RMS accelerations measured only in two reference points of the bogie.

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Section: The Measurement Of the Bogie Vertical Accelerationsmentioning

confidence: 99%

Section: The Measurement Of the Bogie Vertical Accelerationsmentioning

confidence: 99%

Condition Monitoring of the Dampers in the Railway Vehicle Suspension Based on the Vibrations Response Analysis of the Bogie

Dumitriu

2022

Sensors

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“…This trend also applies to the current development direction of railway transport, such as the low floor concept, which significantly impacts the design of undercarriages, traction drive-trains, brake systems 6 , 7 , and other components of railway vehicles 8 , 9 . It is known that the wheelsets of railway vehicles must support the vertical loads and the guiding forces while transmitting traction and braking forces in the wheel/rail contact 10 – 13 .…”

Section: Introductionmentioning

confidence: 99%

Kinematic running resistance of an urban rail vehicle undercarriage: a study of the impact of wheel design

Semenov

Mikhailov

Kovtanets

et al. 2023

Sci Rep

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Urban railway vehicles are important means of transport in towns and cities due to their high capacity, power source, and low running resistance, which make them efficient for operation. Although these properties are considered advantages, there is still room for improvement in their operational efficiency. The main objective of this article is to investigate the impact of railway wheel design on the level of kinematic running resistance, which is expressed as the amount of mechanical energy losses during the interaction of wheels with rails. This research focuses on simulation computations of two variants of wheel design schemes: the traditional design scheme (TKS) and a perspective design scheme (PKS) characterized by a rotating flange independently of the wheel tread surface. Two undercarriage multibody models have been created, one with TKS and one with PKS, and simulation computations have been performed for running speeds of 10 km/h, 20 km/h, 30 km/h, and 40 km/h on track models in curves with radii of 20, 50, 100, 150, 200, and 250 m. The evaluated indicators affecting the level of mechanical energy losses were creep forces, slip velocities, and average power. The most important findings of this study are that the PKS design scheme resulted in lower values of all assessed parameters.

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Experimental Analysis of Vertical Vibrations of a Railway Bogie

Cited by 2 publications

References 23 publications

Condition Monitoring of the Dampers in the Railway Vehicle Suspension Based on the Vibrations Response Analysis of the Bogie

Condition Monitoring of the Dampers in the Railway Vehicle Suspension Based on the Vibrations Response Analysis of the Bogie

Kinematic running resistance of an urban rail vehicle undercarriage: a study of the impact of wheel design

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