Contribution to Random Vibration Numerical Simulation and Optimisation of Nonlinear Mechanical Systems

Sága, Milan; Vaško, Milan; Handrik, Marián; Kopas, Peter

doi:10.20858/sjsutst.2019.103.11

Cited by 24 publications

(21 citation statements)

References 1 publication

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“…In the vice versa, the wheel coupling devices are unlocked or operate in a limited slip mode while running in track curves. The use of a limited slip differential device [7,13,14] is an example of this approach. It should be noted that the specialists of the German company MBB have been the founders of this solution.…”

Section: A Current State Of the Problemmentioning

confidence: 99%

A Study of Improving Running Safety of a Railway Wagon with an Independently Rotating Wheel’s Flange

et al. 2021

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The main objective of this work is to study the possibilities of improving the running safety of a railway wagon with independently rotating wheels by changing their design symmetrically mounted on an axle. The article provides a discussion of the advantages and disadvantages of using the independently rotating wheels in a bogie of railway wagons. Their increasing tendency of derailment is described. The influence of a perspective constructive scheme (PKS) of railway wagon wheels in comparison with a traditional constructive scheme (TKS) on running safety due to the climbing of a wheel flange onto a rail is studied. This work introduces a conceptual proposition of a technical solution to railway wheel design as well as containing the results of both analytical calculations as well as the results of multibody simulations. A PKS wheel design for a railway wheel is designed that allows independent rotation of its tread surface and of a guiding surface (i.e., of a flange) to each other, which both are arranged symmetrically on a wheelset axle. It brings features of the distribution of friction forces generating in a flange contact when the wheel with a TKS and with PKS move on a rail. It is possible to conclude with the help of the obtained results that the use of wheels with the PKS is advisable for the reduction of the running resistance as well as for increasing the running safety of railway wagons.

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Section: A Current State Of the Problemmentioning

confidence: 99%

A Study of Improving Running Safety of a Railway Wagon with an Independently Rotating Wheel’s Flange

et al. 2021

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“…The frame of the Alternative SkidCar is designed without any optimization. For the purpose of future use, it is advisable to optimise the frame in terms of design [6,7] and, if necessary, materials.…”

Section: Fig 1 Experimental Vehicle With the Alternative Skidcarmentioning

confidence: 99%

The adhesion force change of an experimental road vehicle

Jilek¹,

Berg²

2021

Manufacturing Technology

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The Article deals with the controlled influence of the adhesive force in contact of the road vehicle's wheel with the road. The first section shows how the adhesive force is reduced. The next step is the familiarization with the experimental vehicle with the Alternative Skid-Car, where experimental measurements were carried out, assessment of the advantages and disadvantages of the experimental vehicle with the Alternative SkidCar and the drive on the sliding surface following the experimental test methods. The objective of the article is to determine how great the difference in vehicle behaviour is when the adhesive force changes by modifying the radial reaction and the change in the coefficient of adhesion.

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“…17,24 In connection with the completion of the circular path during the measurement with Renishaw Ballbar, precision can also be defined as a degree of the robot’s ability to follow the desired trajectory concerning the coordinate system of reference. The robot’s accuracy is the function of several factors which, according to professional, can be divided into five categories 11,25,26 :…”

Section: Motivationmentioning

confidence: 99%

Examination of industrial robot performance parameters utilizing machine tool diagnostic methods

Kuric

Tlach

Císar

et al. 2020

International Journal of Advanced Robotic Systems

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The article discusses the possibility to identify changes in robot accuracy based on deformation of the circular path measured by the Renishaw Ballbar system. The research method utilizes correlation between industrial robot accuracy and precision of method used for the so-called calibration process. The presented experiments consist of two basic parts. The first is positional analysis with a simulation model of the robot in Creo Parametric 4.0. The second part describe practical measurements using the Renishaw Ballbar QC20-W and the Renishaw XL-80 laser interferometer. The results of the experiments confirm that Renishaw Ballbar can be used to quickly and simply identify occurrence of changes in the condition of an industrial robot.

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Contribution to Random Vibration Numerical Simulation and Optimisation of Nonlinear Mechanical Systems

Cited by 24 publications

References 1 publication

A Study of Improving Running Safety of a Railway Wagon with an Independently Rotating Wheel’s Flange

A Study of Improving Running Safety of a Railway Wagon with an Independently Rotating Wheel’s Flange

The adhesion force change of an experimental road vehicle

Examination of industrial robot performance parameters utilizing machine tool diagnostic methods

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