Autor: Szurgott, P. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Badanie oddziaływania elementów rurociągu z nieodkształcalną podporą
Investigations of a stress state for tube elements in a contact area with rigid saddle
Autorzy:: Małachowski, J.
Szurgott, P.
Gieleta, R.
Powiązania:: https://bibliotekanauki.pl/articles/210305.pdf
Data publikacji:: 2008
Wydawca:: Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:: deformacja rur
wytężenie
badania eksperymentalne
symulacje numeryczne
pipe deformation
efforts
experimental testing
numerical simulations
Opis:: W artykule przedstawiono wyniki analiz numerycznych silnie zdeformowanych fragmentów rur. Uzyskane wartości odniesione zostały do testu eksperymentalnego, co pozwoliło w pełni zweryfikować model symulacyjny. Silna deformacja obiektu, wynosząca ok. 42% wymiarów początkowych była realizowana poprzez zgniatanie stemplem o znacznie większej sztywności niż rozpatrywany element. Geometria zdeformowanego elementu została odtworzona dzięki wykorzystaniu skanera przestrzennego i porównana z wynikami analiz numerycznych. Weryfikacji modelu MES dokonano w oparciu zarówno o uzyskane zarysy zdeformowanych obiektów, jak i wartości odkształceń. Analiza numeryczna pozwoliła na ocenę stanu naprężeń panujących w silnie odkształconym fragmencie rury.
Because of no capability to estimate a stress state in a real pipeline, numerical analyses are taken advantage for this purpose, e. g. Finite Element Method. However, it needs to remember, that numerical simulations of pipelines must be verified in laboratory or range tests or through simulations of real failure of an object. In a carried numerical analysis, stamping process of a deformable pipe by rigid bodies was investigated. The rectangular shape of a rigid body was taken into account. Determination of strain stress states in case of strong deformation (about 42% -change of a diameter) was a purpose of this research. Numerical analyses were preceded by experimental tests. The results received from a numerical analysis were compared with experimental results.
Źródło:: Biuletyn Wojskowej Akademii Technicznej; 2008, 57, 1; 113-126
1234-5865
Pojawia się w:: Biuletyn Wojskowej Akademii Technicznej
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Modeling of the shock wave impact on the flexible shell
Autorzy:: Derewonko, A.
Szurgott, P.
Niezgoda, T.
Powiązania:: https://bibliotekanauki.pl/articles/238097.pdf
Data publikacji:: 2009
Wydawca:: Instytut Technologii Bezpieczeństwa Moratex
Tematy:: elastyczne powłoki
modelowanie fali uderzeniowej
fala uderzeniowa
shock wave
flexible coating
modeling of shock wave
Opis:: An underwater explosion is one of the possible threat which can occure during military operations and/or civilian usage. The ballistic protection systems are the method to reduce the impact of the high explosive (HE) charge blast wave. The aim of this paper is to present the influence of the shock wave on the flexible shell. The simulation of the underwater detonation is provided with use of the Finite Element Method (FEM). The influence of the distance between the HE charge and the flexible shell on its deformation was estimated. The results of the conducted analysis including explosion were compared with those obtained for the basic model with no explosion.
Źródło:: Techniczne Wyroby Włókiennicze; 2009, R. 17, nr 2/3, 2/3; 107-111
1230-7491
Pojawia się w:: Techniczne Wyroby Włókiennicze
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Numerical analysis of the composite-foam panels applied to protect pipelines against the blast wave
Autorzy:: Barnat, W.
Niezgoda, T.
Szurgott, P.
Panowicz, R.
Powiązania:: https://bibliotekanauki.pl/articles/238142.pdf
Data publikacji:: 2009
Wydawca:: Instytut Technologii Bezpieczeństwa Moratex
Tematy:: odkształcenia energii
dynamika wybuchu
fala uderzeniowa
rurociąg
ochrona rurociągu przed falą uderzeniową
deformation energy
dynamics of outbreak
shock wave
protect pipelines
Źródło:: Techniczne Wyroby Włókiennicze; 2009, R. 17, nr 2/3, 2/3; 112-117
1230-7491
Pojawia się w:: Techniczne Wyroby Włókiennicze
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Example of experimental validation and calibration of a finite element model of a heavy vehicle
Autorzy:: Szurgott, P.
Kwaśniewski, L.
Wekezer, J. W.
Powiązania:: https://bibliotekanauki.pl/articles/243839.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: numerical simulations
finite element analysis
heavy vehicles
validation
suspension systems
Opis:: An example of the experimental validation ofafinite element model of a selected heavy vehicle is presented in the paper. A truck tractor with a three axle single drop lowboy trailer and the total weight of 20 tons was selected as a representative for the tests. The major goal of the conducted studies was to develop a well validated the numerical model of a heavy vehicle applicable for computer simulation of dynamic interaction between a vehicle and a bridge or road structure. Therefore, only several components of the vehicle, affecting the vehicle-road interaction, like wheels and the suspension systems, were modelled in detail. The rest of components were simplified and considered as rigid bodies. The finite element model included fully pneumatic tires and the suspension system modelled with discrete massless springs and dampers. Numerical analyzes were performed using the LS-DYNA computer code. The validation and calibration procedure proposed in the current paper was carried out in two steps. In the first one, some parameters such as material densities, thickness of selected elements, were modified to achieve the correct mass distribution in the model based on the measured axle loads. In the next step the stiffness and damping parameters of the suspension system were evaluated based on the results of the experimental tests. The spring and damping coefflcients at all axles were adjusted until the performance of the FE model closely matched that of the actual vehicle.
Źródło:: Journal of KONES; 2010, 17, 1; 433-440
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

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: 6.

Tytuł:: Thermomechanical FE analysis of the engine piston made of composite material with low histeresis
Autorzy:: Szurgott, P.
Niezgoda, T.
Powiązania:: https://bibliotekanauki.pl/articles/244407.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: engine piston
composite piston
coefficient of thermal expansion
thermal analysis
FE analysis
Opis:: The main purpose of the preliminary analyses presented in the paper was to compare the behaviour of the combustion engine piston made of different type of materials under thermal load. A thermomechanical FE analysis of the engine piston made of composite material was shown. A selected engine is installed in one of the popular polish tanks. The proposed new material is characterized by a low hysteresis – the differences of the coefficient of thermal expansion for heating and cooling are not significant. The results obtained for the piston made of a new material were compared with those for the current standard material. The piston was loaded by a temperature field inside it. Appropriate averaged thermal boundary conditions such as temperatures and heat fluxes were set on different surfaces of the FE model. FE analyses were carried out using MSC.Marc software. Development of the FE model was also presented. Geometrical CAD model of the piston was developed based on the actual engine piston, which was scanned using a 3D laser scanner. A cloud of points obtained from the scanner was processed and converted into a 3- dimensional solid model. FE model of a quarter part of the piston was developed for the preliminary analysis presented in the paper. 4-node tetrahedron finite elements were applied since there was no axial symmetry of the considered object. The temperature field inside the piston was determined and presented in the form of contour bands. Contours of displacement and stress in a radial direction were shown as well.
Źródło:: Journal of KONES; 2011, 18, 1; 645-650
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: CI engine as a case study of thermomechanical FE analysis of the piston - piston rings - cylinder system
Autorzy:: Szurgott, P.
Niezgoda, T.
Powiązania:: https://bibliotekanauki.pl/articles/247997.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: engine piston
composite piston
thermomechanical analysis
FE analysis
Opis:: The compression-ignition engine as a case study of a methodology of the numerical modelling and simulation of the piston - piston rings - cylinder system was presented in the paper. Thermomechanical FE analysis, taking into account thermal and mechanical loads, was carried out using the MSC.Marc/Mentat software. The mechanical loads included loads due to inertial and gas forces as well. A three dimensional solid geometrical model of the considered set was developed using AutoCAD software, whereas the finite element mesh was generated using Altair HyperMesh. Kinematic boundary conditions - the vertical displacement and acceleration of the piston - were described by the corresponding curves as a function of time for selected engine speed. Changes in pressure on the piston crown were estimated based on data from the engine manufacturer and the corresponded indicator diagram available in the literature. The results of thermomechanical FE analysis were presented in the form of stress and/or displacement contours. The main aim of the analysis was to determine the deformation of the piston depending of on the piston material. Two types of material were compared - the actual one PA12 aluminum alloy and the new composite material with low hysteresis. The second material was characterized by slight differences of the coefficient of thermal expansion for heating and cooling.
Źródło:: Journal of KONES; 2012, 19, 1; 399-406
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Modelling and numerical analysis of the reinforced concrete viaduct under the Eurocity EC-114 train
Autorzy:: Szurgott, P.
Powiązania:: https://bibliotekanauki.pl/articles/246723.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: bridge - train interaction
moving train
reinforce concrete bridge
numerical analysis
dynamics
Opis:: The paper presents a methodology of finite element modelling and numerical simulation of symmetric vibrations of the reinforced concrete viaduct using advanced CAE systems. Two types of analysis were carried out - static analysis of the viaduct under dead load and dynamic analysis under a moving high speed train. The KNI 140070 viaduct of span length of 14.40 m with abutment zones was selected as a representative for the study. The serviced ballasted track was taken into consideration. The FE model of the track includes the main rails, fastening systems, sleepers and the ballast. The EuroCity EC 114, Polish high speed train, moving at 100-160 km/h was selected for the study. Components of the train FE model were considered as rigid bodies and were modelled using shell and beam elements. Cylindrical and revolute constrained joints were applied for kinematic connections and relations between relative components. Discrete springs and dampers were applied for modelling of the primary and the secondary suspension systems. The numerical analysis was performed using finite element code LS-DYNA. The stress distribution in selected components of the viaduct structure was presented as the results of the static analysis, whereas the selected time histories for displacements and stresses were shown as the results of the dynamic analysis. The results obtained from both analyses allowed to assess the actual displacement and stress states for the considered viaduct.
Źródło:: Journal of KONES; 2012, 19, 2; 515-524
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

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: 10.

Tytuł:: Numerical analysis of a shaped rail pad under selected static load
Autorzy:: Szurgott, P.
Gotowicki, P.
Niezgoda, T.
Powiązania:: https://bibliotekanauki.pl/articles/248000.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: numerical analysis
FEM
rail pad
hyperelastic material
fastening
Opis:: Numerical analysis of selected type of the polyurethane rail pad is presented in the paper. A shaped pad with cylindrical-shaped elements in its working section was selected as a representative for the computational simulation. Analysis reflected the experimental test according to the valid standard. The test included loading of the vertical force perpendicular to the foot of the rail. Such test allows determining the static stiffness of the pad. The Mooney - Rivlin material model was selected in the current study. Necessary experimental tests including a uniaxial compression and tension were conducted to provide material constants for the hyperelastic material model applied for the FE model. Simplified FE models of the considered rail pad and the rail were developed. Rounded corners and edges of the cylindrical-shaped elements were omitted, since their modelling required a significant density of the FE mesh. Vertical force perpendicular to the foot of the rail was declared as nodal force distributed evenly along the edges of the selected finite element models Non-linear static analysis was performed using MSC.Marc software with large displacements and deformations taken into consideration. The obtained results allowed estimating deformations and the state of stress in a highly deformed rail pad. The static stiffness of the pad was defined as secant stiffness based on the vertical force - deflection curve.
Źródło:: Journal of KONES; 2012, 19, 1; 407-414
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Numerical Modelling and Experimental Verification of Glass-Polyester Mixed Laminate Beam Bending Test
Autorzy:: Bondyra, A.
Klasztorny, M.
Szurgott, P.
Gotowicki, P.
Powiązania:: https://bibliotekanauki.pl/articles/387011.pdf
Data publikacji:: 2012
Wydawca:: Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:: zginanie belek
analiza numeryczna
MES (metoda elementów skończonych)
metoda elementów skończonych
weryfikacja doświadczalna
GRRP shells
beam bending test
FEM numerical modelling
experimental verification
Opis:: The subject undertaken in the study is a glass (fibre) – polyester (matrix) layered composite, of the mixed sequence, composed alternately of laminas reinforced with E-glass plain weave fabric (WR600) and E-glass mat (CSM450). The laminate is manufactured on Polimal 104 polyester matrix. The aim of the study is to determine the options/values of parameters for numerical modelling and simulation of static processes in shell structures made of glass-polyester composites undertaken, in MSC.Marc system, recommended in engineering calculations. The effective elastic and strength constants of homogeneous laminas have been determined experimentally according to the standard procedures. The bending test of composite beams has been conducted experimentally and simulated numerically. Numerical investigations have been focused on selection of options/values of the numerical modelling and simulation parameters. The experimental verification of numerical modelling of the bending test is positive in both the quasi-linear range and in the catastrophic – progressive failure zone.
Źródło:: Acta Mechanica et Automatica; 2012, 6, 3; 1-18
1898-4088
2300-5319
Pojawia się w:: Acta Mechanica et Automatica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Preliminary numerical analysis of selected phenomena occurring in a rail fastening system
Autorzy:: Szurgott, P.
Bernyś, K.
Powiązania:: https://bibliotekanauki.pl/articles/242992.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: rail pad
fastening system
moving load
numerical analysis
hyperelastic material
Opis:: The results of numerical analysis of selected phenomena occurring in a rail fastening system were presented in the paper. The study is focused on assessment of the state of displacement and stresses in the rail pad subjected to a moving load. Two finite element models of the considered system were developed. The first one included elementary track segment corresponding to one sleeper. The second FE model consisted of several elementary segments. The number of the track segments was determined independently on the basis of dynamic analysis carried out using LS-DYNA computer code. Essential FE analyses were performed using MSC.Marc/Mentat software. FE model of the elementary segment included 600 mm length rail and a two-side shaped rail pad. The Mooney - Rivlin material model was applied for the polyurethane rail pad. The fastening systems were modelled using spring elements. The vertical and longitudinal spring elements were also applied for the ballast modelling. A case of moving load caused by single vertical force - one axle - was considered in the study. Methodology of moving load simulation in the MSC.Marc software was proposed. The obtained results allowed assessing the total deflection of the rail pad, the state of stress, the load distribution on respective sleepers. Moreover, they gave information about the behaviour of the rail pad under moving load in context of static test described in respective standards.
Źródło:: Journal of KONES; 2012, 19, 4; 607-614
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Hybrid locomotives overview of construction solutions
Autorzy:: Konarzewski, M.
Niezgoda, T.
Stankiewicz, M.
Szurgott, P.
Powiązania:: https://bibliotekanauki.pl/articles/245761.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: hybrid powertrain
hybrid locomotive
diesel-electric locomotive
railway vehicles
Opis:: Nowadays, transportation becomes a significant source, apart from factories and power plants, of air pollution. Therefore, due to legal restrictions on the emission of noxious gases, other power sources for vehicles are necessary. Some of these power sources allow replacement of the internal combustion engine completely, whereas the other ones only support the engine operation. Hence, a hybrid powertrain – alternative to the drivetrain equipped with an internal combustion engine only – is increasingly being used. The hybrid powertrain was mostly applied in cars and buses but recently it has been also used in railway vehicles such as locomotives and multiple units. The paper presents a shortened and brief overview of construction solutions of selected hybrid locomotives. A list of the applied hybrid drive systems as well as the basic data and properties are provided. The most important variants of vehicles are compared. The presented material allows identification of the development trends in the considered area. The hybrid locomotive usually uses an onboard rechargeable energy storage system, placed between the power source and the traction transmission system connected to the wheelsets. Modification of a classic diesel-electric locomotives is a relatively simple procedure since they have all the components of a series hybrid transmission except the storage battery. Therefore, the existing and operated diesel-electric locomotives can be modified to increase their efficiency and reduce operating costs and emissions.
Źródło:: Journal of KONES; 2013, 20, 1; 127-134
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Numerical analysis of load distribution in railway track under wheelset
Autorzy:: Szurgott, P.
Bernyś, K.
Powiązania:: https://bibliotekanauki.pl/articles/244219.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: railway rack
wheelset
bogie
moving load
numerical analysis
Opis:: The results of numerical analysis of a load distribution in a railway track under wheelset are presented in the paper. Dynamic analysis was carried out using LS-DYNA computer code. Ballasted track with the rectilinear rail-line axis was taken into consideration. Finite element model of the track section was developed. The model included two rails, fastening systems, sleepers, ballast and the embankment. Fasteners and the ballast layer were modelled using 1-D massless discrete elements – springs and dampers. Sleepers were modelled as elastic beams. The embankment was reflected approximately by a rectangular prism with unmovable side and bottom boundary surfaces. Moving load was applied using simplified FE models of railway vehicles. Vertical forces were put in the wheel – rail contact points. Two types of the vehicles, and loads consequently, were considered – the first one including two single wheelsets whereas the second one was equipped with two classic 2-axle bogies. RAIL_TRACK and RAIL_TRAIN LS-DYNA’s modules were applied for simulating the vehicle – track interaction. Displacements of selected nodes as well as other characteristic values were registered during the numerical simulation. Contours of stress and displacements for selected moment of time were also presented as a result of the FE analysis. The study gave information about the behaviour of the railway track and foundation under load caused by single axle and 2-axle bogie. Obtained results were compared to those available in the literature and the technical instructions of railway design.
Źródło:: Journal of KONES; 2013, 20, 3; 405-410
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

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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