Autor: Krasoń, K. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Numerical standard tests of railway carriage platform
Autorzy:: Chłus, K.
Krasoń, W.
Powiązania:: https://bibliotekanauki.pl/articles/246494.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: ACTS intermodal wagon
standard strength test of the structure
FEM
numerical analysis
Opis:: The object of the paper is to build a numerical model of a railway wagon and perform statics calculation. The examined railway wagon is designed to transport interchangeable containers in ACTS (Abroll Container Transport System). The essential matter of such reloading is placing the container on a special rotating platform, which enables horizontal reloading of the load on the truck. The carriage is equipped with a flat frame cooperating with two bogies and three mobile platforms rotated in respect to central knots in order to simplify the process of loading and unloading of the interchangeable containers. A numerical model was verified and validated by experimental and numerical tests. Particular attention was paid to the support model in a contact place of the frame-carriage and bogies. The paper presents the results of static calculations prepared in accordance with relevant standards for this type of construction. The numerical model was loaded according to the requirements of PN-EN12663 standard specified for the F-I vehicle and BN-77/3532-40 standard. The finite element method was used for numerical analysis. A discreet FEM model was developed with the aid of MSC Patran pre-processor, while MSC Nastran code was applied for simulations. The results of calculations are presented by displacement and stress characteristic. Strength of construction was determined based on results.
Źródło:: Journal of KONES; 2012, 19, 3; 59-64
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Dynamic analysis of railway platform chassis model
Autorzy:: Chłus, K.
Krasoń, W.
Powiązania:: https://bibliotekanauki.pl/articles/242171.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: mechanics
strength of construction
FEM
dynamic analysis
railroad wagon
Opis:: The aim of the paper is to build a numerical model of a railway wagon, to perform statics calculation as well as to compare the calculations results with the experimental results of measurement of a real railway wagon maximal deflection and to conduct dynamic analyses. The examined railway wagon was designed to transport interchangeable containers in ACTS (Abroll Container Transport System). The essential matter of such reloading is placing the container on a special rotating platform which enables horizontal reloading of the load onto the truck. In order to perform strength and dynamic numerical analyses with a finite element method (FEM), a 3D coat-beam model of the wagon were prepared. The discreet FEM model was executed with the aid of MSC.Patran preprocesor and for calculations MSC Nastran program was applied. The obtained results were verified by the experimental results of measurement of real railway wagon maximal deflection. The correctly verified model was applied both for modal analysis of free vibration and time dependent dynamic analysis. The influence of dynamic load on construction strength was examined. The loading model was selected so as to represent hypothetical simultaneous loading of the containers on the carriage frame. It turned out that the most strenuous element during the simulation of loading the containers onto the frame was the element of the vertical reinforcing plate which is in the direct contact with the pivot support of the carriage.
Źródło:: Journal of KONES; 2011, 18, 2; 93-100
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Experimental and numerical verification of the pontoon bridge section
Autorzy:: Chłus, K.
Derewonko, A.
Krasoń, W.
Powiązania:: https://bibliotekanauki.pl/articles/244277.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: pontoon bridge section
demonstrator of construction
verification of numerical analysis
Opis:: The object of the paper is experimental and numerical verification of a pontoon bridge prototype section. The main part of a single segment is a waterproof cassette which contains a shell (pontoon). After filling with the air, the pontoon assures the required buoyancy. The cassette, in which the shell is located, has a movable bottom. Pontoon bridges are built of ready-to-use repeatable segments and they may be used as temporary crossings. Verification of the bridge modules was performed by launching a demonstrator compound of two modules of the pontoon bridge section, filling the pontoons with air and measuring their immersion. The test was performed in the pool, in the Military Engineering Works. S.A. (WZInż. S.A.) in Deblin. Recording and measurements were performed with two Phantom V12 cameras placed on static tripods. It allowed reading from each of the cameras the heights of the midpoints of the prow and the starboard above the water surface, and the inclination angle of the pontoon unit in transverse and longitudinal planes. The combination of these results allowed calculation of height of the roadway centre of pontoons set above the water surface. Displacement and stability of the structure was specified based on analytical calculations. This paper presents the results of numerical calculations of launching a pontoon bridge section demonstrator. Correctness of the numerical methods of calculation was examined based on a comparison of numerical and experimental results.
Źródło:: Journal of KONES; 2013, 20, 1; 35-40
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Numerical tests of the double spring with hangers
Autorzy:: Krasoń, W.
Wysocki, J.
Zając, K.
Powiązania:: https://bibliotekanauki.pl/articles/245670.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: double multi-leaf spring
suspension of a motor truck
stand test
vertical load
1D FE models
3D FE models
Opis:: Subject of the work include selected numerical models of the test stand intended for testing a prototype double multi-leaf spring of bi-linear nature. Basic design assumptions of the stand were as follows: provide laboratory tests of multi-leaf (single and double) springs designed for dependent suspensions of passenger cars of permissible weight up to 3,5 tones. The stand should allow for testing basic spring and strength characteristics in the quasi-static conditions and dynamic conditions with the impact of the force impulse or a set variable load characterized by a particular force amplitude (displacement) and frequency of its variations. Considered stand models include the tested spring, base, support and the hanger. This paper presents two types of FEM models of the spring element (beam and 3D). In the first element, components of the spring-hanger system were mapped by means of beam elements, in the second one by means of definite solid elements. The spring was loaded with a vertical force from 0 to 10000 N. A non-linear analysis of the bi-linear spring was carried out including clearance as well as the elastic analysis of the stand. The results of the numerical tests are presented in a form of tabular specifications, diagrams of displacements, and reduced stresses of selected components of the stand.
Źródło:: Journal of KONES; 2015, 22, 4; 163-170
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Selected aspects of simulation of multi - module mechanisms with the use of multibody method
Autorzy:: Krasoń, W.
Kozłowski, R.
Derewońko, A.
Golczak, K.
Powiązania:: https://bibliotekanauki.pl/articles/247966.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: bridges
simulation of multi-component mechanism
rigid models
multibody numerical analysis
Opis:: The paper presents numerical analysis of a single segment of a floating bridge built in the form of a metal cassette with a movable bottom. An internal elastic container - a pontoon filled with the air was fixed in the cassette [4]. It enables a fluent change of displacement of a single segment and of a floating ribbon assembled from segments. A multibody analysis of cooperation of the cassette in the process of filling the pontoon and opening the cassette was discussed. Numerical analysis of a single cassette presented in the paper constitutes a part of tests including stand tests. The single floating cassette has a typical shelled construction consists of a tight deck, a pneumatic chamber closed with a reinforced movable bottom and sets of fastenings together with a mechanism of bottom opening. Each cassette is equipped with a highly resistant elastic or semi-elastic cushion hereinafter called a pontoon. The movement of the bottom and the process of opening the cassette module with a pneumatic air cushion realized under an influence of pressure of the compressed air. As a result of uneven filling the individual chamber of the pontoon with the air or their uneven emptying in the process of closing the cassette, there can occur the asymmetry of displacements of the bottom resulted even in seizing of telescopic mechanisms. In the paper were considered the cases of symmetrical and asymmetrical movement of the bottom corresponding to symmetrical and unsymmetrical pull out of the telescopic mechanism modules. Dynamical analysis of movement of cooperating subsystems of the floating cassette was carried out with the use of MSC.Adams code [5, 8].
Źródło:: Journal of KONES; 2012, 19, 1; 207-214
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Multi - body simulations of railway wagon dynamics
Autorzy:: Wójcik, K.
Małachowski, J.
Baranowski, P.
Mazurkiewicz, Ł.
Damaziak, K.
Krasoń, W.
Powiązania:: https://bibliotekanauki.pl/articles/246886.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: multi-body
MSC ADAMS
railway wagon
dynamics
Opis:: The main aim of the presented paper is to verify the dynamics of chosen railway wagon using multi-body methods. Thus, in tests a wagon prototype with rotational rail-car body was simulated, which is going to be used for TIR vehicles trailer bodies transporting. Implemented prototype is authored by the team from Department of Applied Mechanics and Computer Science from Faculty of Mechanical Engineering in Military University of Technology. For this purpose CAD model, and subsequently numerical model, of mentioned wagon was developed. Using MSC Adams software initial boundary conditions, material parameters and contact characteristics were defined. In the previous authors' paper [1], preliminary analyses of the loads acting on the railway platform were carried out, which verified chosen parameters and coefficients. The main aim of presently proposed 3D multi-body simulations of railway wagon is to investigate its motion with full load and to determine the operation limit safety. Thus, in the performed analyses the railway wagon was accelerated to the desired velocity and drove through the curved tracks with four different velocities. From the carried out simulations the wagon dynamic behaviour was investigated and obtained results including contact forces characteristics were compared from all analyses cases. Moreover, performed study shows that the MSC. Adams software is capable for analysing and simultaneously validating various complex engineering problems, such as the one investigated by the authors.
Źródło:: Journal of KONES; 2012, 19, 3; 499-506
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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