Evaluation of Vibrational Properties of a Three-wheeled Vehicle in Terms of Comfort

Dižo, Ján; Blatnický, Miroslav

doi:10.21062/ujep/269.2019/a/1213-2489/mt/19/2/197

Cited by 9 publications

(7 citation statements)

References 26 publications

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“…The authors of the presented work perform an investigation of vehicle properties in terms of their dynamical responses and effect over a long time. They have developed a number of various models of vehicles with a focus on rail vehicles and road vehicles [21][22][23][24][25]. These activities have led to the number of results, which are mainly aimed at the evaluation of two areas, namely the ride comfort for passengers [23,25] and the operational safety [22,24].…”

Section: Research Motivationmentioning

confidence: 99%

“…They have developed a number of various models of vehicles with a focus on rail vehicles and road vehicles [21][22][23][24][25]. These activities have led to the number of results, which are mainly aimed at the evaluation of two areas, namely the ride comfort for passengers [23,25] and the operational safety [22,24]. These areas have been assessed for various parameters of vehicles and for various types of rail and road vehicles.…”

Section: Research Motivationmentioning

confidence: 99%

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Assessment of Dynamics of a Rail Vehicle in Terms of Running Properties While Moving on a Real Track Model

et al. 2022

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Simulation computations represent a very effective tool for investigating operational characteristics and behaviours of vehicles without having a real product. The rail vehicles sector is typical, in that simulation computations including multibody modelling of individual vehicles (i.e., wagons) as well as entire trainsets are widely used. In the case of designing rail vehicles, running safety and ride comfort are two of the most important assessment areas. The presented work is focused on the research of the dynamical effects of a rail vehicle while running on a railway track created in a commercial multibody model. There is a lot of research focused on the investigation of dynamic performances while a rail vehicle is running on a flexible railway track. The real operation of a rail vehicle meets problems on track, where the stiffness-damping parameters of a railway track vary in transient sections (e.g., the exit of a tunnel). This work brings a contribution to research related to the assessment of the dynamic response of a rail vehicle on a chosen track section. A passenger railway vehicle is chosen as a reference multibody model. Simulation computations were performed for three different railway track models, i.e., for a rigid track model and for a flexible track model defined in two different manners. The stiffness-damping parameters of the rail vehicle are defined symmetrically in relation to the longitudinal axis of the vehicle, e.g., they are the same values for the left and right side. The centre of gravity is not located symmetrically, but it is partially shifted in the lateral direction. This can be observed in the results of wheel forces and their waveforms. There are evaluated values and waveforms of the vertical wheel forces, the lateral wheel forces and the derailment quotient. The obtained results have revealed the influence of the railway track formulation in the model on the output parameters.

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Section: Research Motivationmentioning

confidence: 99%

Section: Research Motivationmentioning

confidence: 99%

Assessment of Dynamics of a Rail Vehicle in Terms of Running Properties While Moving on a Real Track Model

et al. 2022

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“…Thus, in [10][11], a simplified analysis of the manoeuvrability and stability of vehicle combinations, such as a tractor in combination with 1 Formulation of the problem One of the main problems of the modern big city is the global crisis of normal functioning of the urban environment due to the structural growth of the motorization level, oversaturation of the road network with traffic flows. This leads to a sharp deterioration in transport services, traffic jams, rising noise and air pollution, a practical drop in speed, rising energy costs, increasing the victim's number of road accidents [1][2][3][4][5][6][7][8][9].…”

Section: Analysis Of Scientific Publicationsmentioning

confidence: 99%

The Stability Indicators of the Section Articulated Buses

Sakhno¹,

Gerlici²,

Poliakov³

et al. 2022

Komunikácie

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The mathematical model of a multi-section articulated bus has been improved in the article, which allowed to determine the stability indicators of the two and three-section articulated buses for the Metrobus system. The critical speed for the three-section articulated bus was 28.06 m/s and for the two-section articulated bus -30.89 m/s. Since the motion of multi-section articulated buses will be carried out on separate lanes with a speed of 25 -28 m/s, one can assume that the stability of rectilinear traffic of both two and three-section buses is provided. In non-stationary modes of motion with two-section articulated buses, the lateral speed of the first bus decreases by almost 8.5 % compared to the three-section and the second trailer-bus increases by almost 9.5 % compared to the three-section. In this case, the motion stability of multi-section articulated buses can be considered satisfactory, as the lateral accelerations in the center of mass of all sections do not exceed 0.45 g.

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“…For these purposes, they have created many simulation models, performed a large number of computer simulations and undertaken investigations by means of test stands [31,32]. Their research deals mainly with rail vehicles [28,[33][34][35] and road vehicles [36][37][38][39][40]. During these activities, various phenomena have been observed.…”

Section: Motivation and The Research Goalmentioning

confidence: 99%

Evaluation of Ride Comfort in a Railway Passenger Car Depending on a Change of Suspension Parameters

Dižo

Blatnický

Gerlici

et al. 2021

Sensors

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Ride comfort for passengers remains a pressing topic. The level of comfort in a vehicle can influences passengers’ preferences for a particular means of transport. The article aims to evaluate the influence of changes in suspension parameters on the ride comfort for passengers. The theoretical background includes a description of the applied method for a creating the virtual model of an investigated vehicle as well as the method of evaluating the ride comfort. The ride comfort of the vehicle is assessed based on the standard method, which involves calculating the mean comfort method, i.e., ride comfort index NMV in chosen points on a body floor. The NMV ride comfort index (Mean Comfort Standard Method) requires the input of acceleration signals in three directions. The rest of the article offers the results of simulation computations. The stiffness–damping parameters of the primary and secondary suspension systems were changed at three levels and the vehicle was run on the real track section. The ride index NMV was calculated for all three modifications of the suspension system in the chosen fifteen points of the body floor. It was found that lower values in the stiffness of the secondary suspension system lead to lower levels of ride comfort in the investigated railway passenger car; however, lower values in the stiffness–damping parameters of the primary suspension system did not decrease the levels of ride comfort as significantly.

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Evaluation of Vibrational Properties of a Three-wheeled Vehicle in Terms of Comfort

Cited by 9 publications

References 26 publications

Assessment of Dynamics of a Rail Vehicle in Terms of Running Properties While Moving on a Real Track Model

Assessment of Dynamics of a Rail Vehicle in Terms of Running Properties While Moving on a Real Track Model

The Stability Indicators of the Section Articulated Buses

Evaluation of Ride Comfort in a Railway Passenger Car Depending on a Change of Suspension Parameters

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