Vehicle Velocity Relation to Slipping Trajectory Change: An Option for Traffic Accident Reconstruction

Žuraulis, Vidas; Sokolovskij, Edgar

doi:10.7307/ptt.v30i4.2720

Cited by 10 publications

(6 citation statements)

References 18 publications

(21 reference statements)

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“…where: rm-turning radius, m; g-acceleration of free fall, m/s 2 ; β-the angle of inclination of the transverse road; hsc-the height of the vehicle's center of mass (Figure 2), m; b-the width of the vehicle's wheelbase, m. The calculation of the critical slip of the vehicle [25,26]) is performed using a specified coefficient of friction of µ = 0.6 [28], specifically for dry asphalt in this scenario [29,30]. The The critical driving speed in the event of a truck skidding is calculated according to the formula [25]:…”

Section: Mathematical Calculation Methodologymentioning

confidence: 99%

Comparison of the Relative Importance of Factors Affecting the Conveyance of Bulk and Liquid Cargo

Čižiūnienė,

Matijošius,

Liebuvienė

et al. 2024

Applied Sciences

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The transportation of bulk or liquid cargo is crucial for ensuring the delivery of such cargo to areas lacking well-established infrastructure or favorable natural conditions. These areas may lack sufficient rail or air transport accessibility, or may not have suitable embankments along rivers, lakes or seas with appropriate loading and unloading facilities. Regarding distinctive characteristics, we would like to emphasize the following: (1) Efficient freight accessibility without the need for more infrastructure that is tailored to the existing natural circumstances; (2) An efficient and cost-effective mode of transportation for the movement of small quantities of goods; (3) The cargo philosophy is designed to meet customer expectations by providing a convenient and personalised service that is focused on delivering goods directly to their door. This research employed theoretical methodologies to characterize the primary force exerted by vehicles in the transportation of bulk and liquid commodities (the relationship between centrifugal force and speed and the relationship between the center of gravity and speed). Furthermore, by using expert assessment, the significance indicators pertaining to the individual criteria impacting the transportation of bulk and liquid cargoes were ascertained, along with the identification of their interrelationships (comparison of the different forces in the transportation process of bulk and liquid cargoes, comparison of the criteria of centrifugal force in the transportation process of bulk and liquid cargoes, comparison of the dangerous factors in the transportation process of bulk and liquid cargoes, comparison of the critical level of tank filling in the transportation process of bulk and liquid cargoes, and comparison of the factors that can affect the dynamics of a vehicle in the transportation process of bulk and liquid cargoes).

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Section: Mathematical Calculation Methodologymentioning

confidence: 99%

Comparison of the Relative Importance of Factors Affecting the Conveyance of Bulk and Liquid Cargo

Čižiūnienė,

Matijošius,

Liebuvienė

et al. 2024

Applied Sciences

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“…The centrifugal force increases with increasing driving speed and lower road turn radii. With a reduction in the speed at a corner, the centrifugal force also decreases [29].…”

Section: Methodsmentioning

confidence: 99%

Research Determining the Priority Order of Forces Acting on a Vehicle Transporting Logs

et al. 2023

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When transporting different types of cargo, the factors affecting the cargo must be assessed to ensure a safe and fast transportation process. However, the specificity of the cargo means that the standard assessment methods do not reflect the existing conditions or are standard at the theoretical and/or recommendation level. Therefore, in the event of a traffic accident, when a vehicle or cargo is damaged or other traffic participants are put at rink, assessment of the situation is difficult and requires an expert assessment. Then, the most optimal means of accomplishing this is to simulate transportation parameters with a specific vehicle and cargo. The transportation of wooden logs is a very specific method of transportation where, in addition to the weight of the load itself, it is necessary to assess how the load affects the dynamics of the vehicle. Therefore, determining the priority of the forces that act on the vehicle carrying wooden logs becomes very important in order to model the transport parameters of this cargo. This article uses an analytical survey, an expert survey and its analysis, and methods to determine correlations. Given the fact that the main forces acting on the load most often manifest during a turn, this study assessed road turns and the respective speed on them as the main parameters. Other parameters, such as road roughness and roundabouts, were not assessed, because they would be an object of long-distance research. The study results revealed that the main forces affecting a vehicle transporting logs manifest in the following priority order: inertial forces, gravity forces, frictional forces and, finally, centrifugal forces.

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“…At higher velocities, the amplitudes of the vibrations increase; in the "Sport" mode, the amplitudes of vibrations were lower, as compared to "Comfort" mode. On movement upon "Comfort" mode, the vehicle body was prone to vibrations of higher intensity [18,19].…”

Section: Influence Of Semi-active Suspension Characteristics On the Dmentioning

confidence: 99%

Influence of Semi-Active Suspension Characteristics on the Driving Comfort

Pečeliūnas¹

2020

Adv. Sci. Technol. Res. J.

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The article analyzes the influence of modern-day vehicle suspension characteristics on the passenger's comfort sensation. The cars with air suspension were selected for the experiments and the suspension was equipped with mode selection options-"Comfort" and "Sport". A sinusoidal manoeuvre was ensured with a steering wheel rotation robot. The experimental tests were carried out by changing car suspension modes and wheel sizes. The experiments and data processing were carried out in accordance with the provisions of the ISO 2631-1 international standard. In the experimental test, the longitudinal and lateral acceleration projections captured by the sensor and roll rate of the vehicle were set to provide the most comfortable adjustment of the car suspension mode. After filtering the measured vertical acceleration values, the comfort sensation was expressed as the root mean square (RMS) of vibration acceleration value. After evaluating the passenger's sense of comfort, a summary of the effect of the car suspension-driving mode was provided.

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Vehicle Velocity Relation to Slipping Trajectory Change: An Option for Traffic Accident Reconstruction

Cited by 10 publications

References 18 publications

Comparison of the Relative Importance of Factors Affecting the Conveyance of Bulk and Liquid Cargo

Comparison of the Relative Importance of Factors Affecting the Conveyance of Bulk and Liquid Cargo

Research Determining the Priority Order of Forces Acting on a Vehicle Transporting Logs

Influence of Semi-Active Suspension Characteristics on the Driving Comfort

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