Vertical vibrations of composite bridge/track structure/high-speed train systems. Part 3: Deterministic and random vibrations of exemplary system

Podwórna, Monika; Klasztorny, M.

doi:10.2478/bpasts-2014-0030

Cited by 12 publications

(13 citation statements)

References 9 publications

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“…3. Simulation of deterministic and random vibrations of the exemplary BTT system is presented in [5,17].…”

Section: Resultsmentioning

confidence: 99%

Vertical vibrations of composite bridge/track structure/high-speed train systems. Part 2: Physical and mathematical modelling

Podwórna¹,

Klasztorny²

2014

Bulletin of the Polish Academy of Sciences: Technical Sciences

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Abstract.A theory of one-dimensional physical and mathematical modelling of the composite (steel-concrete) bridge/track structure/highspeed train system is developed including viscoelastic suspensions of rail-vehicles with two two-axle bogies each, non-linear Hertz contact stiffness and one-sided contact between wheel sets and rails, the viscoelastic and inertia features of the bridge, the viscoelastic track structure on and beyond the bridge, approach slabs, and random vertical track irregularities. Compared to the state-of-the-art, the physical model developed in the study accurately reproduces dynamic processes in the considered system. Division of the system into the natural subsystems, a method of formulation of the equations of motion partly in implicit form and the finite element method are applied. Vibrations in the vertical plane of symmetry are described by more than nine matrix equations of motion with constant coefficients. Couplings and non-linearity are hidden in the generalized load vectors. The equations of motion are integrated using the implicit Newmark average acceleration method with linear extrapolation of the interactions between the subsystems.

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“…3. Simulation of deterministic and random vibrations of the exemplary BTT system is presented in [5,17].…”

Section: Resultsmentioning

confidence: 99%

Vertical vibrations of composite bridge/track structure/high-speed train systems. Part 2: Physical and mathematical modelling

Podwórna¹,

Klasztorny²

2014

Bulletin of the Polish Academy of Sciences: Technical Sciences

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“…They resulted in selection of standard elements of the system or proposition of original parts of the considered subsystems, there was verified the accuracy of their operation in the system and, subsequently, after verification with the use of suitably selected simulations CAE and stand tests [3,4,[15][16][17], there was proposed a working project of the modified functional mechanism of the platform and a working project of a prototype version of the loading platform along with 3D documentation of the developed constructional solutions.…”

Section: Resultsmentioning

confidence: 99%

“…Due to a non-linear character of the mapped cooperation of wagon subsystems, including contact phenomena, to perform the strength calculations in the range of static and dynamic [15][16][17], MSC.Nastram, MSC.Marc and LS-Dyna applications [11,12], specialized for analysis of big structures taking into consideration non-linear procedures in the geometric and physical range, were chosen.…”

Section: Resultsmentioning

confidence: 99%

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FE numerical tests of railway wagon for intermodal transport according to PN-EU standards

Krasoń¹,

Niezgoda²

2014

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract.A special wagon, presented in the paper, can be used for intermodal transport of various types of vehicles. It enables transport of vehicles of 36 tons mass and height of 4m on the GB1 clearance height. An innovative wagon is equipped with a frame-support with marginal parts mounted on standard biaxial bogies and the central part lowered with a rotatable loading platform. The rotating part of wagon acts as a kind of platform, allowing truck to move through it during load/unload. During railway operation, this rotating platform is to become an integrated part of the wagon; the tailboards of the rotating part will be connected to the over-bogie part with the special locks. A unique concept of the wagon structure forced a design approach which was rather unusual for the rail industry. Since the design team aimed at very challenging demands of GB1 envelope and usage of standard bogies, the layout of the wagon had to be thoroughly examined in terms of its overall stiffness. Every major design change had to be simulated in order to accurately predict its influence on the whole wagon structure. FE analysis was used for numerical tests of such a wagon structure in different configurations. The calculations were carried out on the basis of PN-EN standards. Selected results of numerical tests of the prototype version of a such wagon for intermodal transports were presented in the paper.Key words: prototype railway wagon for intermodal transport, FE methodology of numerical tests, analysis of the wagon strength and dynamics simulations according to PN-EU standards.

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“…Moreover, it causes less traffic congestion by using moving vehicles as a continuous source of energy for the bridge [6,7]. González et al (2010) [8], He et al (2014) [9], and Podworna and Klasztorny (2014) [10] found that the results of dynamic load testing are inevitably influenced by deck conditions, vehicle, and stiffness and form of bridges. Park et al (2005) [11] researched the function of roughness on dynamic load testing through full-scale field tests.…”

Section: Introductionmentioning

confidence: 99%

A Rapid Detection Method for Bridges Based on Impact Coefficient of Standard Bumping

Liu

Zhang

Wang³

2018

Mathematical Problems in Engineering

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The evaluation method of load transfer efficiency using falling weight deflectometer is unworkable in remote mountain areas and transportation difficult region. Therefore, a novation method of load transfer efficiency evaluation is proposed using the index of amplitude ratio. Finite element method is applied to study the influence of dowel bar parameters (diameter, length, spacing, and elastic modulus) and pavement structures parameters (thickness and modulus) on load transfer efficiency, frequency, and the ratio of amplitude. Results of finite element model show that the effects of dowel bar and pavement structure parameters on load transfer efficiency and the ratio of amplitude are similar. The load transfer efficiency, frequency, and the ratio of amplitude enhance with the increase of dowel bar diameter, length, and elastic modulus and the decrease of dowel bar spacing. The subgrade modulus has more significant influence on the load transfer efficiency, frequency, and the ratio of amplitude than other pavement parameters. Polynomial function method is utilized to established load transfer mode between deflection-based load transfer efficiency and the ratio of amplitude. The feasibility and reliability of new method is verified by static and dynamic load test. All results are helpful for the development of highway engineering and airport engineering.

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Vertical vibrations of composite bridge/track structure/high-speed train systems. Part 3: Deterministic and random vibrations of exemplary system

Cited by 12 publications

References 9 publications

Vertical vibrations of composite bridge/track structure/high-speed train systems. Part 2: Physical and mathematical modelling

Vertical vibrations of composite bridge/track structure/high-speed train systems. Part 2: Physical and mathematical modelling

FE numerical tests of railway wagon for intermodal transport according to PN-EU standards

A Rapid Detection Method for Bridges Based on Impact Coefficient of Standard Bumping

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