Modeling and Simulation of Railway Bogie Structural Vibrations

Claus, H.; Schiehlen, Werner

doi:10.1080/00423119808969585

Cited by 105 publications

(36 citation statements)

References 4 publications

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“…In this context, the track irregularities may be introduced in the computational models as stochastic data characterized by the power spectral density [8,14,15,23,24].…”

Section: The Alignment Representation In Computational Modelsmentioning

confidence: 99%

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Numerical Synthesis of the Track Alignment and Applications. Part I: The Synthesis Method

Dumitriu¹

2016

Transport Problems

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Summary. This paper features a method to synthesize the track irregularities, by which the alignment may be analytically represented by a pseudo-stochastic function, as well as the implementation of such method in the numerical simulation of the dynamic behaviour of the railway vehicles. The method thus suggested allows a convenient formulation of the limits of the interval specific to the wavelengths of the track lateral irregularities, so that it will be representative for the frequency range of the vehicle lateral vibrations. The Part I of this paper demonstrates the method to synthesize the track alignment and its basic elements -the power spectral density of the track irregularities, as per ORE B176 and the values associated with the track quality levels, mentioned in the UIC 518 Leaflet. The Part II introduces the results of the numerical simulations regarding the dynamic behaviour of the railway vehicle during the circulation on a tangent track with lateral irregularities, synthesized as in the method herein.

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“…In this context, the track irregularities may be introduced in the computational models as stochastic data characterized by the power spectral density [8,14,15,23,24].…”

Section: The Alignment Representation In Computational Modelsmentioning

confidence: 99%

“…Here, the alignment is usually defined on the track centreline, as a mean value of the alignment between left and right rails (see Fig. 1) [14,19,22], as in…”

Section: The Alignment Representation In Computational Modelsmentioning

confidence: 99%

Numerical Synthesis of the Track Alignment and Applications. Part I: The Synthesis Method

Dumitriu¹

2016

Transport Problems

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“…The obtained data represent a sample of an average track, see Ref. [7]. This excitation can be applied to investigate the system response when running with ideal wheels over a realistic track.…”

Section: Deterministic and Stochastic Excitationsmentioning

confidence: 99%

“…Then, the bogie frame is modeled as a flexible body using finite elements to include all medium frequency resonance phenomena, see Ref. [7]. The model is restricted to a half bogie frame showing the same vertical eigenmodes as the full model except the first one where the full frame is internally twisted.…”

Section: Parameter Optimization Of Suspension Coefficientsmentioning

confidence: 99%

SYMBOLIC-NUMERIC ANALYSIS OF FLEXIBLE MULTIBODY SYSTEMS^*

Claus

Schiehlen

2002

Mechanics of Structures and Machines

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The paper presents the vibration analysis and the evaluation of dynamic stresses in flexible multibody systems, and their parameter optimization using symbolic-numeric methods. Based on the fundamentals of multibody system modeling the force method and the deformation method are described and the latter one is extended to include the static and dynamic responses of the structure. Performance criteria are defined for optimization. The overall design process is supported by appropriate software for all steps of analysis and optimization. The application of the approach is devoted to railway dynamics. For the analysis of the dynamic stresses in a railway wheelset the extended deformation approach is used. The simulation results indicate that the durability of the design of the wheelset under consideration is satisfactory. The vertical vibrations of the passenger coach with rigid wheelsets and a flexible bogie frame results in acceleration amplitudes of the carbody which may cause a brumming or droning noise. The substitution of the rigid wheelsets by radialelastic ones reduces these amplitudes considerably. An optimization of spring and damper coefficients of the model with radialelastic wheels results in reduced droning noise of such a passenger coach and lower force level between wheel and rail. The symbolic approach is especially highlighted for the simulation at different vehicle speeds and the optimization of the suspension parameters.

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“…In this case, the PSD functions of each track irregularity can be either estimated from the available measured track geometries or from track safety standards such as the ones given by the Federal Railroad Administration [4]. Track irregularities can then by generated from these PSD functions from a time-frequency transformation based on a spectral representation (see [5,6] for further details). In such a method, the railway track irregularities are thus considered as four independent Gaussian random fields, which are supposed to be stationary and ergodic in space.…”

Section: Introductionmentioning

confidence: 99%

Track irregularities stochastic modeling

Perrin

Soize

Duhamel

et al. 2013

Probabilistic Engineering Mechanics

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High speed trains are currently meant to run faster and to carry heavier loads, while being less energy consuming and still respecting the security and comfort certification criteria. To face these challenges, a better understanding of the interaction between the dynamic train behavior and the track geometry is needed. As during its lifecycle, the train faces a great variability of track conditions, this dynamic behavior has indeed to be characterized on track portions sets that are representative of the whole railway network. This paper is thus devoted to the development of a stochastic modeling of the track geometry and its identification with experimental measurements. Based on a spatial and statistical decomposition, this model allows the spatial and statistical variability and dependency of the track geometry to be taken into account. Moreover, it allows the generation of realistic track geometries that are representative of a whole railway network. First, this paper describes a practical implementation of the proposed method and then applies this method to the modeling of a particular French high speed line, for which experimental data are available.

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Modeling and Simulation of Railway Bogie Structural Vibrations

Cited by 105 publications

References 4 publications

Numerical Synthesis of the Track Alignment and Applications. Part I: The Synthesis Method

Numerical Synthesis of the Track Alignment and Applications. Part I: The Synthesis Method

SYMBOLIC-NUMERIC ANALYSIS OF FLEXIBLE MULTIBODY SYSTEMS^*

Track irregularities stochastic modeling

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Modeling and Simulation of Railway Bogie Structural Vibrations

Cited by 105 publications

References 4 publications

Numerical Synthesis of the Track Alignment and Applications. Part I: The Synthesis Method

Numerical Synthesis of the Track Alignment and Applications. Part I: The Synthesis Method

SYMBOLIC-NUMERIC ANALYSIS OF FLEXIBLE MULTIBODY SYSTEMS*

Track irregularities stochastic modeling

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Resources

About

SYMBOLIC-NUMERIC ANALYSIS OF FLEXIBLE MULTIBODY SYSTEMS^*