Temat: train simulation - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Porównanie własności trakcyjno-ruchowych lokomotyw EU07 i ET22 ze składem towarowym
The comparison of movement properties of EU07 and ET22 electric locomotives with freight cars
Autorzy:: Kwaśnikowski, J.
Gramza, G.
Powiązania:: https://bibliotekanauki.pl/articles/256252.pdf
Data publikacji:: 2009
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Technologii Eksploatacji - Państwowy Instytut Badawczy
Tematy:: przewozy kolejowe
energochłonność
symulacja przejazdu
pociąg
railway transport
energy
simulation
train
Opis:: Praca zawiera porównanie realizacji zadań przewozowych realizowanych z wykorzystaniem lokomotyw elektrycznych serii EU07 i ET22. Przedstawiono wyniki ilościowe przejazdów teoretycznych wykonanych z użyciem pakietu symulacyjnego RSEL.
Movement properties of EU07 and ET22 electric locomotives with freight cars were compared in the paper. Quantitative results of theoretical performances executed on the basis of simulation experiments done by computer program RSEL are also presented.
Źródło:: Problemy Eksploatacji; 2009, 2; 121-128
1232-9312
Pojawia się w:: Problemy Eksploatacji
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Modelling and numerical simulation of symmetric vibrations of the KNI 140070 viaduct -ballasted track - KTX train system
Autorzy:: Szurgott, P.
Klasztorny, M.
Niezgoda, T.
Powiązania:: https://bibliotekanauki.pl/articles/247456.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: railway bridge
composite bridge
ballasted track
KTX train
modelling and simulation
Opis:: The paper develops a new methodology of FE modelling and simulation of the bridge - track - moving train system with the use of CAE systems. The KNI 140070 viaduct of span length 14.40 m, located on the Polish Central Main Line, has been selected. The modernized track contains: 60E1 main rails equipped with Vossloh 300-1 fasteners, 60E1 side rails with SB3 fasteners, B 320 U60 sleepers, crushed stone ballast, approach RC slabs. A KTX (Korea Train eXpress) high-speed train, being a modification of a TGV train, is taken into consideration. A methodology of physical and numerical modelling of the viaduct, the track and the train was developed using Altair HyperMesh and LS-PrePost software. The FE model of a bridge superstructure consists of 4-node shell elements (main beams) and 8-node 48 DOF solid elements (reinforced concrete platform). RAIL TRACK and RAIL TRAIN modules available in LS-Dyna system were applied for simulating the train — trach interaction. Hughes-Liu beam elements were used for the rail modelling. Rail fastenings were simulated using one-dimensional discrete spring and damper elements. Carbodies, bogieframes and wheelsets were considered as rigid bodies and they were modelled using shell and beam elements. Cylindrical and revolute constrained joints and discrete springs and dampers were applied to connect all components of the FE model of rail-vehicles. The exemplary simulation of transient vibrations of the bridge - trach -train system has been made for service velocity 300 km/h. Contours of displacement and stress and selected time histories for displacements, accelerations and stresses, created in LS-PrePost and HyperView software, have been analysed.
Źródło:: Journal of KONES; 2010, 17, 3; 415-422
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Symulator komputerowy przekaźnikowego systemu (typu e) sterowania ruchem pociągów na stacji jako narzędzie szkolenia i doskonalenia zawodowego dyżurnych ruchu
Computer simulator of relay interlocking system (type e) at railway station as a tool for teaching and professional training for traffic controllers
Autorzy:: Chyba, A.
Okrzesik, P.
Puchała, M.
Powiązania:: https://bibliotekanauki.pl/articles/248649.pdf
Data publikacji:: 2011
Wydawca:: Stowarzyszenie Inżynierów i Techników Komunikacji Rzeczpospolitej Polskiej
Tematy:: symulacja komputerowa
dokształcanie i doskonalenie zawodowe
systemy sterowania ruchem pociągów
kierowanie ruchem pociągów
stanowisko dyżurnego ruchu
computer simulation
professional training systems
train control systems
train traffic management
traffic controller desk
Opis:: Proces przygotowania kadry do obsługi systemów sterowania ruchem kolejowym może być prowadzony przy zastosowaniu komputerowych symulatorów odwzorowujących funkcje rzeczywistych obiektów. Artykuł przedstawia taką możliwość w odniesieniu do przygotowania zawodowego dyżurnych ruchu. Dodatkową zaletą prezentowanego symulatora jest zlokalizowanie go w internecie, co umożliwia korzystającym z niego ćwiczenie funkcji obsługi pulpitu w dowolnym czasie i w dowolnym miejscu. Może to być również elementem e-learningu zawodowego dla dyżurnych ruchu.
The process of staff training to handle the rail traffic control systems can be carried out using computer simulators imitating features of real objects. Such opportunity in regards to professional training for traffic controller has been presented in the article. An additional advantage of the presented simulator is its location in the internet. This location gives the users a chance to examine any function of desktop operation in any time and any place. It could also be an element of e-learning training for traffic controllers.
Źródło:: Zeszyty Naukowo-Techniczne Stowarzyszenia Inżynierów i Techników Komunikacji w Krakowie. Seria: Materiały Konferencyjne; 2011, 96, z. 158; 67-83
1231-9171
Pojawia się w:: Zeszyty Naukowo-Techniczne Stowarzyszenia Inżynierów i Techników Komunikacji w Krakowie. Seria: Materiały Konferencyjne
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Modernization of the KNI 140070 viaduct and its influence on dynamic response under selected high speed train
Autorzy:: Szurgott, P.
Kozera, D.
Powiązania:: https://bibliotekanauki.pl/articles/242996.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: bridge - train interaction
composite bridge
ballasted track
ICE train
modelling and simulation
Opis:: The paper develops a methodology of FE modelling and simulation of the bridge - track - moving train (BTT) system using LS-DYNA computer code. The KNI 140070 viaduct of span length 14.40 m with ballasted track was selected as a representative for the study. Two variants of the viaduct were taken into consideration - a version operated before the modernization in 2008 and the modernized version including additional flats welded to the bottom flanges of the main beams. The German high-speed train ICE-3 moving at 150–300 km/h was selected. The FE model of the BTT system was developed using Altair HyperMesh and LS-PrePost software. The platform of the viaduct was modelled using 8-node 48 DOF solid elements. The structure was symmetrised, homogenized and reflected by linear viscoelastic orthotropic materials. Discrete model of the track included the main and side rails, fastening systems, sleepers, crushed stone ballast and approach RC slabs. Components of the train FE model were considered as rigid bodies. Cylindrical and revolute constrained joints were applied for kinematic connections and relations between respective components. Discrete springs and dampers were applied for FE modelling of the primary and the secondary suspension systems. Numerical simulations were focused on determining the resonant velocities for both considered variants. Selected time histories for displacements and stresses, were shown as the results of the analyses.
Źródło:: Journal of KONES; 2012, 19, 4; 615-624
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Zastosowanie komputerowego symulatora przekaźnikowych urządzeń srk typu E dla potrzeb kształcenia dyżurnych ruchu i możliwości jego rozbudowy
Application of computer simulator for relay interlocking tools of train control system type E for teaching and professional training train dispatchers and some possibilities of its development
Autorzy:: Chyba, A.
Okrzesik, P.
Puchała, M.
Puławska, S.
Powiązania:: https://bibliotekanauki.pl/articles/248453.pdf
Data publikacji:: 2012
Wydawca:: Stowarzyszenie Inżynierów i Techników Komunikacji Rzeczpospolitej Polskiej
Tematy:: symulacja komputerowa
dokształcanie i doskonalenie zawodowe
systemy sterowania ruchem pociągów
kierowanie ruchem pociągów
stanowisko dyżurnego ruchu
computer simulation
additional and professional training
train control systems
train traffic management
train dispatcher
Opis:: Artykuł przedstawia możliwe zastosowania prezentowanego symulatora prowadzenia ruchu kolejowego i obsługi przekaźnikowych urządzeń stacyjnych typu E. Największy nacisk położono na zastosowanie programu do szkolenia i doskonalenia zawodowego dyżurnych ruchu, którzy muszą nabywać umiejętności obsługi urządzeń tego typu. Zaproponowano również możliwości rozbudowy programu w celu lepszego jego dopasowania do warunków szkolenia, a także wskazano inne obszary, w których wykorzystać można symulator lub jego elementy.
There are shown in the paper some possibilities of application of presented computer simulator for relay interlocking tools of train control system type E. The advantages in teaching and professional training of train dispatchers, who have to improve themselves skills at serving tools of such type have been emphasised. The possibilities of program development in order to its better adaptation to training conditions have been presented. In addition, the other areas, where the simulator could be applied, have been mentioned.
Źródło:: Zeszyty Naukowo-Techniczne Stowarzyszenia Inżynierów i Techników Komunikacji w Krakowie. Seria: Materiały Konferencyjne; 2012, 3(99); 91-101
1231-9171
Pojawia się w:: Zeszyty Naukowo-Techniczne Stowarzyszenia Inżynierów i Techników Komunikacji w Krakowie. Seria: Materiały Konferencyjne
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Span length influence on dynamic response of selected bridge under high - speed train
Autorzy:: Szurgott, P.
Bernacki, P.
Powiązania:: https://bibliotekanauki.pl/articles/247827.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: railway bridge
composite bridge
ballasted track
high-speed train
modelling and simulation
Opis:: The paper presents a methodology of finite element (FE) modelling and simulation of the bridge – track – moving high-speed train system using CAE systems. Two composite (reinforce-concrete – steel) bridges were considered. The span length was equal to 15 and 21 meters, respectively. Bridges selected for the study belong to the proposed series of bridges with the span length of 15 to 27 meters stepped by 3 meters. Full symmetry of the bridges was assumed. RC platform was homogenized since the rebars were distributed quasi-uniformly in the specified platform sections. The FE model of a bridge superstructure consisted of 4-node shell elements (main beams) and 8-node 48 DOF solid elements (reinforced concrete platform). RAIL_TRACK and RAIL_TRAIN LS-DYNA’s modules were applied for simulating the moving train – track interaction. Ballasted track with the rectilinear rail-line axis was taken into consideration. German ICE-3 train running at velocity of 200–300 km/h was selected as a representative for the study. All mass components of the train FE model were treated as rigid bodies. Symmetric vibrations of the train units were assumed with respect to the main longitudinal vertical plane of symmetry of the system. Nodal displacement and longitudinal normal stress in shell elements were registered during the FE analysis. The results were depicted in the form of time histories for selected velocities. In addition, extreme values of vertical deflections and normal stress were compiled and presented a function of train velocity. It allowed to assess the dynamic response of the bridge depending on its span length. Contours of resultant displacement for the RC platform was also presented.
Źródło:: Journal of KONES; 2013, 20, 1; 343-350
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Wpływ losowych nierówności toru na drgania wybranego układu most zespolony / nawierzchnia kolejowa / pociąg szybkobieżny
Effect of random track irregularities on selected composite bridge / track structure / high-speed train system vibrations
Autorzy:: Podwórna, M.
Klasztorny, M.
Powiązania:: https://bibliotekanauki.pl/articles/389886.pdf
Data publikacji:: 2013
Wydawca:: Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:: most zespolony
nawierzchnia kolejowa podsypkowa
pociąg szybkobieżny ICE-3
losowe nierówności toru
modelowanie
symulacja
badania numeryczne
steel concrete composite bridge
ballasted track structure
ICE-3 high–speed train
random track irregularities
modelling
simulation
numerical analysis
Opis:: Opracowano quasi-ścisłą teorię modelowania jednowymiarowego (1D), fizycznego i matematycznego, układu most zespolony / nawierzchnia kolejowa podsypkowa / pociąg szybkobieżny (BTT), przy uwzględnieniu lepkosprężystych zawieszeń pojazdów szynowych na dwuosiowych wózkach jezdnych, nieliniowej sztywności kontaktowej Hertza i jednostronnego kontaktu między zestawami kołowymi a szynami, cech lepkosprężystych i bezwładnościowych mostu, lepko sprężystej nawierzchni kolejowej na moście i poza mostem, płyt przejściowych i losowych nierówności toru. Na podstawie tej teorii opracowano zaawansowane algorytmy komputerowe modelowania numerycznego układów BTT oraz program komputerowy do symulacji drgań pionowych tych układów. W ramach wstępnych badań dynamicznych rozważono most zaprojektowany zgodnie z polskimi normami, o rozpiętości teoretycznej przęsła 15,00 m, oznaczony kodem SCB-15. Most obciążono niemieckim pociągiem szybkobieżnym ICE-3, poruszającym się z prędkością krytyczną (270 km/h) i maksymalną (300 km/h).
A theory of the quasi-exact physical and mathematical modelling of the composite (steel–concrete) bridge / ballasted track structure / high-speed train system (BTT) was developed, including viscoelastic suspensions of rail-vehicles on two-axle bogies, the non-linear Hertz contact stiffness and one-sided contact between the wheel sets and the rails, the viscoelastic and inertia features of the bridge, the viscoelastic track structure on and beyond the bridge, the approach slabs, and random track irregularities. Based on this theory, advanced computer algorithms for the BTT numerical modelling were written and a computer program to simulate the vertical vibrations of the BTT systems was developed. The bridge subject to the preliminary dynamic analysis and designed according to Polish standards has a 15.00 m span length. The bridge was loaded by the German ICE-3 high-speed train moving at the critical (180 and 270 km/h) and the maximum (300 km/h) operating speeds.
Źródło:: Budownictwo i Architektura; 2013, 12, 1; 259-266
1899-0665
Pojawia się w:: Budownictwo i Architektura
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Vertical vibrations of composite bridge/track structure/high-speed train systems. Part 1: Series-of-types of steel-concrete bridges
Autorzy:: Podworna, M.
Klasztorny, M.
Powiązania:: https://bibliotekanauki.pl/articles/202151.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: composite steel-concrete bridge
ballasted track structure
high-speed train
design
FE modelling
simulation
forced resonances
numerical analysis
Opis:: A new series-of-types of single-span simply-supported railway composite (steel-concrete) bridges, with a symmetric platform, has been designed according to the Polish bridge standards. The designed bridges/viaducts are located on the main railways of the classification coefficient k = +2. A ballasted track structure adapted to high operating speeds has also been designed. The ultimate limit states and the limit states corresponding to the bridges undertaken are collected and discussed. The bridges have been designed in accordance with contemporary art engineering, with geometric and material optimization, avoiding overdesign. A new methodology of numerical modelling and simulation of dynamic processes in composite bridge/ballasted track structure/high speed train systems, developed in Part 2 and Part 3, has been applied and implemented in a problem-oriented computer programme. A new approach to predicting forced resonances in those systems is formulated and tested numerically. It has been proved that in the case of typical structural solutions of bridges and ballasted track structures, it is necessary to introduce certain limitations for operating speeds of trains.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2014, 62, 1; 165-179
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Vertical vibrations of composite bridge/track structure/high-speed train systems. Part 3: Deterministic and random vibrations of exemplary system
Autorzy:: Podworna, M.
Klasztorny, M.
Powiązania:: https://bibliotekanauki.pl/articles/201818.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: composite steel-concrete bridge
ballasted track structure
high-speed train
design
simulation
numerical analysis
Opis:: Based on the one-dimensional quasi-exact physical and mathematical modelling of a composite (steel-concrete) bridge/track structure/high-speed train system (BTT), developed in Part 2, advanced computer algorithms for the BTT numerical modelling and simulation as well as a computer programme to simulate vertical vibrations of BTT systems are developed. The exemplary bridge under numerical quasi-static and dynamic analysis, designed according to Polish standards, has a 15.00 m span length and belongs to the SCB series-of-types developed in Part 1. The bridge is loaded by a German ICE-3 high-speed train moving at the resonant and maximum operating speeds. A continuously welded ballasted track structure adapted to high operating velocities is applied. The output quantities include: time-histories of the vertical deflection of the main beams at the midspan, time-histories of the longitudinal normal stress in the bottom fibres of the main beams at the midspan, time-histories of the vertical acceleration of the bridge deck at the midspan, time-histories of the vertical accelerations of the suspension pivots in car-bodies, time-histories of the dynamic pressures of the wheel sets of moving rail-vehicles. The design quantities, understood as the extreme values of the output quantities, are used to verify the design conditions. The basic random factor, i.e. vertical track irregularities of the track, is taken into consideration. Basic statistics of the design quantities treated as random variables are calculated and taken into account in the design conditions.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2014, 62, 2; 305-320
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Modelowanie różnych rodzajów hamulców kolejowych w poszczególnych pojazdach dla symulacji ruchu pociągu
Modelling of various railway brakes types in the individual vehicles for the simulation of train motion
Autorzy:: Piechowiak, Tadeusz
Powiązania:: https://bibliotekanauki.pl/articles/34112033.pdf
Data publikacji:: 2016
Wydawca:: Sieć Badawcza Łukasiewicz - Poznański Instytut Technologiczny
Tematy:: modeling
pneumatic braking system
rail
simulation
train motion
modelowanie
hamulec pneumatyczny
kolej
symulacja
ruch pociągu
Opis:: Artykuł prezentuje rozszerzenie opracowanej przez autora metody modelowania układu hamulca pneumatycznego całego pociągu. Model składa się z różnych części składowych spojonych modelem ciągłym układu przewodu głównego. Rozszerzenie polega na możliwości występowania w symulowanym pociągu różnych komponentów hamulcowych na poszczególnych wagonach. Przedstawiono warianty metody, przykłady wyników i praktyczne znaczenie tych rozszerzeń.
The article presents the expanding of the prepared by author method of the modelling of the whole train pneumatic braking system. The model consists of various parts connected with continuous model of the braking pipe. The expanding of the model allow use of the various braking component in individual cars. In the paper are presented variants of the method, examples of the results and the practical advantages of this expanding.
Źródło:: Rail Vehicles/Pojazdy Szynowe; 2016, Nr 4; 24-32
0138-0370
2719-9630
Pojawia się w:: Rail Vehicles/Pojazdy Szynowe
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Design of large-scale streamlined head cars of high-speed trains and aerodynamic drag calculation
Autorzy:: Wu, Z.
Yang, E.
Ding, W.
Powiązania:: https://bibliotekanauki.pl/articles/224065.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: high speed train
NURBS
aerodynamic drag
streamlined head car
numerical simulation
pociąg ekspresowy
opór aerodynamiczny
symulacja numeryczna
Opis:: Aerodynamic drag plays an important role in high-speed trains, and how to reduce the aerodynamic drag is one of the most important research subjects related to modern railway systems. This paper investigates a design method for large-scale streamlined head cars of high-speed trains by adopting NURBS theory according to the outer surface characteristics of trains. This method first created the main control lines of the driver cab by inputting control point coordinates; then, auxiliary control lines were added to the main ones. Finally, the reticular region formed by the main control lines and auxiliary ones were filled. The head car was assembled with the driver cab and sightseeing car in a virtual environment. The numerical simulation of train flow field was completed through definition of geometric models, boundary conditions, and space discretization. The calculation results show that the aerodynamic drag of the high-speed train with large-scale streamlined head car decreases by approximately 49.3% within the 50-300 km/h speed range compared with that of the quasi-streamlined high-speed train. This study reveals that the high-speed train with large-scale streamlined head car could achieve the purpose of reducing running aerodynamic drag and saving energy, and aims to provide technical support for the subsequent process design and production control of high-speed train head cars.
Źródło:: Archives of Transport; 2017, 44, 4; 89-97
0866-9546
2300-8830
Pojawia się w:: Archives of Transport
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Estimation of dynamic performances of the safe operation of high-speed electric train
Autorzy:: Domin, R.
Domin, I.
Cherniak, G.
Powiązania:: https://bibliotekanauki.pl/articles/223834.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: high-speed electric train
electric train
safe operation
computer simulation
dynamic performances
anti-yaw dampers
szybki pociąg elektryczny
pociąg elektryczny
bezpieczeństwo
symulacja komputerowa
osiągi dynamiczne
Opis:: The process of implementation of new developments, in particular, new generation rolling stock holds a prominent place among the range of measures for organization of high-speed passenger rail transportation in Ukraine. The example of permission for use and the initial phase of work with interregional NRCS2 dual-mode electric trains produced by Hyundai-Rotem Corporation is the illustrative one in this context. Due to the detection of macro-cracks in bolster beams of the car body frames of these electric trains, namely in the areas of mounting of anti-yaw dampers, these trains were taken out of service until the completion of the modernization of problematic nodes. The comprehensive study on the determination of the safety parameters of electric trains was conducted to determine the causes of destruction of bolster beams. At the same time, bolster beams loading was estimated depending on the characteristics of anti-yaw dampers by means of computer simulation of the dynamics of motion of trailing and motor cars. The feasibility of selection of parameters for anti-yaw dampers mounted on electric train cars was assessed. The results of work will improve the safe operation of high-speed trains and increase the efficiency of estimates regarding the loading of bearing structures of underframes of the of rolling stock.
Źródło:: Archives of Transport; 2017, 41, 1; 7-16
0866-9546
2300-8830
Pojawia się w:: Archives of Transport
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Generating and modeling of braking curve and the assessment of the quality of automatic stopping of the train
Autorzy:: Anuszczyk, J.
Gocek, A.
Pacholski, K.
Dominikowski, B.
Powiązania:: https://bibliotekanauki.pl/articles/374056.pdf
Data publikacji:: 2018
Wydawca:: Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:: train
braking
docking
quality factor
controller
simulation
pociąg
hamowanie
dokowanie
wskaźnik jakości
kontroler
symulacja
Opis:: This paper presents the theory about generating the braking curve and the analysis of the influence of the braking controller parameters on the generation of the braking curve of the train. In this paper, computed examples of braking quality developed using generic quality factor are shown, and on the basis of the calculations, weight components of the factor and an additional criterion for assessing the quality of braking were proposed. It has been demonstrated that the developed algorithms can be used to verify the effectiveness of the braking controller and the adjustment of the terms, and the change of these algorithms affects the shape of the generated braking curve of the train. It has been shown that the analysis of a failure of the propulsion car revealed the existence of a safe braking area. The performed statistical analysis confirmed the normal distribution of the scatter of braking results, for which the regression model fitted.
Źródło:: Transport Problems; 2018, 13, 2; 13-25
1896-0596
2300-861X
Pojawia się w:: Transport Problems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Issues on Simulation of the Railway Rolling Stock Operation Process – A System and Literature Review
Autorzy:: Czaja, Piotr
Restel, Franciszek J.
Powiązania:: https://bibliotekanauki.pl/articles/504453.pdf
Data publikacji:: 2018
Wydawca:: Międzynarodowa Wyższa Szkoła Logistyki i Transportu
Tematy:: railway traffic simulation
railway rolling stock
traffic management
train crew management
Opis:: Railway traffic simulation, taking into account operation and maintenance conditions, is not a new issue in the literature. External effects in such networks (e.g. level crossings) were not taken into account in studies. The used models do not take into account sufficiently the process of degradation and recovery of the network. From the technical side, currently carried out simulations are made using similar approaches and techniques as in the initial stage of research. Well-established work in this area could be the basis for evaluation of new solutions. However, the progress in simulation tools during the last years, especially in performance and programming architecture, attempts to create a modern simulation tool. In the paper were presented the main assumptions for the evaluated event-based simulation method, with application to stiff-track transportation networks.
Źródło:: Logistics and Transport; 2018, 37, 1; 49-60
1734-2015
Pojawia się w:: Logistics and Transport
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Prediction and validation for the aerodynamic noise of high-speed train power car
Autorzy:: Jiang, S.
Yang, S.
Wu, D.
Wen, B-Ch.
Powiązania:: https://bibliotekanauki.pl/articles/375504.pdf
Data publikacji:: 2018
Wydawca:: Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:: aerodynamic noise
high-speed train
Lighthill-Curle theory
simulation model
online test
hałas aerodynamiczny
pociąg ekspresowy
teoria Lighthilla-Curle
model symulacyjny
test online
Opis:: The aerodynamic noise of high-speed train power car was investigated in this article. The full-scale power car was first modeled, and the external steady flow field was computed by a realizable k-ε turbulence model. The aerodynamic noise sources of the power car surface and the external transient flow field were then calculated by broadband noise source model and large eddy simulation (LES) model, respectively. The static pressures on the train surface were obtained from the results of the transient model. Considering the transient flow field, the far-field aerodynamic noise generated by the power car was finally derived from Lighthill-Curle theory. It was validated by means of on-line tests that have been performed along a real high-speed railway line. Through comparisons between simulations and measurements, it is shown that the simulation model gives reliable aerodynamic noise predictions. We foresee numerous applications for modeling and control of the aerodynamic noise in high-speed train.
Źródło:: Transport Problems; 2018, 13, 2; 91-102
1896-0596
2300-861X
Pojawia się w:: Transport Problems
Dostawca treści:: Biblioteka Nauki

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