Vertical Vibration of the Vehicle Model with Higher Degree of Freedom

Soukup, Josef; Skočilas, Jan; Skočilasová, Blanka

doi:10.1016/j.proeng.2014.12.113

Cited by 12 publications

(12 citation statements)

References 13 publications

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“…x Rotational dynamics of gun breech about Y axis in the XZ plane. This is expressed in equation (16).…”

Section: Equations Of Motion For the Elevation Dynamicsmentioning

confidence: 99%

“…15 A mechanical model is developed, comprising three spatially and elastically supported bounded bodies, in which a new solution method for the equations of motion with higher degrees of freedom, is proposed. 16 A rail vehicle with elastic and dissipative members has been considered, in which, the vertical vibrations at any arbitrary position in the vehicle could be determined based on the above model. 16 A field test is conducted on a military tracked vehicle, in order to analyse the accelerations at selected locations on the vehicle for different types of terrains and different speed conditions.…”

Section: Introductionmentioning

confidence: 99%

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Effect of integrated ride and cornering dynamics of a military vehicle on the weapon responses

Banerjee

Balamurugan

Kumar

2018

Proceedings of the Institution of Mechanical Engineers, Part K:

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The present study brings out the influence of a non-linear dynamics model of military vehicle with trailing arm suspension, on the weapon dynamics responses. A 20 degrees of freedom integrated ride and cornering dynamics model has sequentially been coupled with the 7 degrees of freedom weapon dynamics model. The 20 degrees of freedom integrated model includes the bounce, pitch, roll, longitudinal, lateral and yaw motions of the sprung mass and rotational dynamics of the 14 unsprung masses. The 7 degrees of freedom weapon model comprises the coupled elevation and azimuth dynamics. The coupled weapon model includes angular rotation of the elevation drive, breech and muzzle in elevation direction, as well as, angular rotation of the azimuth drive, turret, breech and muzzle in azimuth direction. The actual physical behaviour of each of the hydro-gas trailing arm suspension units is implemented in the governing differential equations. The non-linear governing equations also incorporate the dynamic coupling between each of the axle arms and sprung mass, which is an inherent behaviour of the trailing arm suspension, unlike their equivalent vertical representation. The integrated model has been simulated for different cornering manoeuvres at specified speeds. It is observed that the sprung mass dynamics, emanating from different manoeuvres, significantly affects the coupled elevation and azimuth dynamics responses of the weapon. The weapon dynamics model coupled with the integrated ride and cornering dynamics model of the military vehicle, would be useful for implementation of a suitable robust gun control system in military vehicles.

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“…x Rotational dynamics of gun breech about Y axis in the XZ plane. This is expressed in equation (16).…”

Section: Equations Of Motion For the Elevation Dynamicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of integrated ride and cornering dynamics of a military vehicle on the weapon responses

Banerjee

Balamurugan

Kumar

2018

Proceedings of the Institution of Mechanical Engineers, Part K:

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“…Generally, there are three main classes of dynamic interactions between rails and sleepers: vertical, lateral and torsional. Vertical rail-sleepers interactions are responsible for damage and service life of the system [3] demonstrated that. Lateral and torsional interactions usually influence the safety against derailment of train and wear of wheels and rails.…”

Section: Introductionmentioning

confidence: 99%

Model Study and Fault Detection for the Railway System

Rawia¹,

Tlijani²,

Knani³

2017

ijacsa

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Abstract-The wheel-rail-sleepers system is simulated as a series of moving point loads on an Euler-Bernoulli beam resting on a visco-elastic half space. This paper concentrates on the railsleepers interaction system (railway system) and the fault detection. The main objective is to mathematically develop and implement a dynamic model of a railway system then the diagnosis of system defects using a Luenberger observer (LO). The simulation results are based on a physical description, mathematical equations and simulations with MATLAB simulation program.

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“…The main assumption is the decoupling of lateral and vertical motions. [11][12][13][14][15][16] The lateral dynamics of the RV system is mainly included in curved tracks. Based on the RV structural symmetry, Nejlaoui et al 11 have developed a quarter RV model, which has 8 DOF.…”

Section: Introductionmentioning

confidence: 99%

“…Hou et al 14 considered a vertical RV model with 10 DOF to quantify the vibration of the RV system excited by a wheel flat defect. To determine the vertical vibration of RV system, Soukup et al 15 developed a vertical RV dynamic model with 9 DOF. Sun and Dhanasekar 16 developed a dynamic model, with 10 DOF, to examine the vertical interaction of the rail track and the wagon system.…”

Section: Introductionmentioning

confidence: 99%

Development of a reduced dynamic model for comfort evaluation of rail vehicle systems

Graa

Nejlaoui

Houidi

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part K:

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In this paper, an analytical reduced dynamic model of a rail vehicle system is developed. This model considers only 38 degrees of freedom of the rail vehicle system. This reduced model can predict the dynamic behaviour of the rail vehicle while being simpler than existing dynamic models. The developed model is validated using experimental results found in the bibliography and its results are compared with existing more complex models from the literature. The developed model is used for the passenger comfort evaluation, which is based on the value of the weighted root mean square acceleration according to the ISO 2631 standard. Several parameters of the system, i.e., passenger position, loading of the railway vehicle and its speed, and their effect on the passenger comfort are investigated. It was shown that the level of comfort is mostly affected by the speed of the railway vehicle and the position of the seat. The load, however, did not have a significant effect on the level of comfort of the passenger.

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Vertical Vibration of the Vehicle Model with Higher Degree of Freedom

Cited by 12 publications

References 13 publications

Effect of integrated ride and cornering dynamics of a military vehicle on the weapon responses

Effect of integrated ride and cornering dynamics of a military vehicle on the weapon responses

Model Study and Fault Detection for the Railway System

Development of a reduced dynamic model for comfort evaluation of rail vehicle systems

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