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    Wyświetlanie 1-11 z 11
    Tytuł:
    Modification and analyses of structural properties of a goods wagon bogie frame
    Autorzy:
    Dižo, Ján
    Blatnický, Miroslav
    Harušinec, Jozef
    Falendysh, Anatoliy
    Powiązania:
    https://bibliotekanauki.pl/articles/329358.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    goods wagon bogie
    modified design
    bogie frame
    modal analysis
    strength analysis
    wagon towarowy
    rama wózka
    projekt
    analiza modalna
    analiza wytrzymałościowa
    Opis:
    The contribution presents a modification of a goods wagon bogie frame. Every newly designed or significantly modified any support part of a railway bogie must meet strict criteria related to its strength and fatigue life. It presents key changes of the structure of an original goods wagon bogie frame, conditions and results strength analyses for unfavourable load cases, for which values of load forces come out from valid standards. The introductory part presents the original goods wagon bogie and the idea of its modification. In the next part analyses of structural properties (modal and stress analyses) are introduced. Simulation computations were carried out using Finite Element Method. Further, main load cases which all bogies must meet before commissioning and conditions for bogies approval are described. In simulation calculations a goods bogie frame was loaded in compliance with standards by four unfavourable load cases.
    Źródło:
    Diagnostyka; 2019, 20, 1; 41-48
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    FEM analysis of main parts of a manipulator for mountig a compressor to a car equipped with a pneumatic suspension system
    Autorzy:
    Blatnický, Miroslav
    Dižo, Ján
    Barta, Dalibor
    Droździel, Paweł
    Powiązania:
    https://bibliotekanauki.pl/articles/328780.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    engineering devices
    FEM simulation
    pneumatic mechanism
    vehicle
    pojazd
    mechanizm pneumatyczny
    symulacje MES
    Opis:
    The article deals with a FEM analysis of main parts of an engineering design of a pneumatically controlled manipulator, which will serve for mounting a compressor to a PO536 car chassis. This car chassis belongs to SUV cars and it is equipped with a pneumatic suspension system. It is the chassis of a Porsche Cayenne car produced in the Slovak Republic. The designed manipulator will be located on the assembly line of this vehicle. Except of FEM analyses of designed important parts of the manipulator, which are necessary for verification of safety of the design in order to obtain distribution of stresses and deformations in a structure, the it contains also the design of a pneumatic circuit of the manipulator together with pneumatic logic and it individual components. Based on three-dimensional model, there will be possible to generate drawings of the manipulator for manufacturing of the device and its application to the real operation.
    Źródło:
    Diagnostyka; 2020, 21, 2; 87-94
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Engineering design of a manipulator for mounting an air suspension compressor to a car chassis
    Autorzy:
    Blatnický, Miroslav
    Dižo, Jan
    Barta, Dalibor
    Rybicka, Iwona
    Powiązania:
    https://bibliotekanauki.pl/articles/2091144.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    compressor
    air suspension system
    chassis
    engineering design
    manipulation
    kompresor
    system zawieszenia pneumatycznego
    podwozie
    projekt inżynieryjny
    manipulacja
    Opis:
    This article is aimed at the engineering design of a manipulator, which is pneumatically controlled. It will serve for mounting the compressor of an air suspension system to the chassis of a sport utility vehicle (SUV) produced in the Slovak Republic. The manipulator will be used on an assembly line, on which SUVs are assembled. The designed device belongs to a group of dedicated devices, which are not produced within a serial production, however, it is the only functional prototype. Together with the manipulator structure, a pneumatic part of the assembly line including individual components, schemes and the pneumatic system will be proposed. Within the project process, all necessary customer demands, technical and safety standards have to be met. Moreover, ergonomic requirements for handling the device and other acts on the workplace have to be considered.
    Źródło:
    Zeszyty Naukowe. Transport / Politechnika Śląska; 2020, 109; 5--16
    0209-3324
    2450-1549
    Pojawia się w:
    Zeszyty Naukowe. Transport / Politechnika Śląska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Design of a manipulator of a conveyor for bulk materials – calculation of the center of gravity of the conveyor
    Autorzy:
    Blatnický, Miroslav
    Dižo, Ján
    Molnár, Denis
    Droździel, Paweł
    Powiązania:
    https://bibliotekanauki.pl/articles/2203083.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    steel structure
    analytical calculation
    center of gravity
    technology
    handling
    konstrukcja stalowa
    obliczenia analityczne
    środek ciężkości
    technologia
    obsługa
    Opis:
    The predominant goal of the research presented in this paper is the design of a manipulator for a conveyor of bulk materials based on the given requirements. This issue is an emerging topical one mainly for the reasons of increasing efficiency and speed, as well as the safety of maintenance of machines and equipment. Especially, another essential aspect is the reduction of the physical strain on operators during service operations on the conveyor of bulk materials. The introductory part of this paper attends to the materials used for the production of steel structures, their technological processing, as well as different types of joining of their components. The practical part was set out to ascertain the mass and position of the center of gravity of the load itself – the conveyor. From the perspective of acting, it loads the entire proposed structure, although in different operating modes.
    Źródło:
    Zeszyty Naukowe. Transport / Politechnika Śląska; 2022, 117; 43--56
    0209-3324
    2450-1549
    Pojawia się w:
    Zeszyty Naukowe. Transport / Politechnika Śląska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Structural design of a boom mounting of a mast type jib crane for handling sludge pumps
    Autorzy:
    Molnár, Denis
    Blatnický, Miroslav
    Dižo, Ján
    Ishchuk, Vadym
    Powiązania:
    https://bibliotekanauki.pl/articles/2201651.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Koszalińska. Wydawnictwo Uczelniane
    Tematy:
    mast type jib crane
    handling
    structural design
    functional calculation
    load capacity
    żuraw przemysłowy
    dźwig
    obsługa
    projekt konstrukcyjny
    udźwig
    Opis:
    The paper is a continuation of the issue of the technical solution of a mast type jib crane for handling sludge pumps. It serves for the use in Building no. 900, Block V2, of the nuclear power plant Jaslovské Bohunice. It is an optimization of the original, in-service damaged handling device with manual control of lift and rotation. The overloading of the device has an insignificant effect on the lifting force on a crank handle. It was found that the lifting force permanently falls within the recommended range of 120 to 160 N for convenient operation by a single worker. Inasmuch as there is a complete absence of bearings in the slewing gear in the original design, it is the solution to this issue that is the subject of the paper. The problem of pulling out the sludge pumps, which was established in the course of using the jib crane, ingeniously provided the opportunities to further design changes on the original design. The solution offered was to scrap the original design of the carrier inserted into the support and replace it with a fixed mast on which the boom would rotate. Accordingly, it would potentially be feasible to increase the load capacity of the jib crane, and thus the issue of the sludge pumps attached to the tank bottom would be solved. Moreover, it is attainable to extend the scope of this crane in this way.
    Źródło:
    Journal of Mechanical and Energy Engineering; 2022, 6, 2; 1--6
    2544-0780
    2544-1671
    Pojawia się w:
    Journal of Mechanical and Energy Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Design of a metro door system and determination of main loads
    Autorzy:
    Blatnický, Miroslav
    Dižo, Ján
    Barta, Dalibor
    Droździel, Paweł
    Powiązania:
    https://bibliotekanauki.pl/articles/197054.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    constructional design
    door
    metro
    parametric model
    calculation
    projekt konstrukcyjny
    drzwi
    model parametryczny
    obliczenie
    Opis:
    This article discussed the determination of a metro vehicle’s door forces acting on its coarse structure. With previous articles addressing this issue, a definition of a specific reference vehicle was provided together with the collection of the normative requirements for metro vehicles. These form a basis for addressing the issue. The main objective hereof was to design a technical solution of a door system for the reference vehicle and create a parametric model of the door's forces acting on the vehicle’s rough structure. This model would serve to approximate and operatively quantify these force effects of the door to the vehicle’s structure by modifying the various input parameters. Therefore, it was necessary to create a mathematical model of the equilibrium conditions of the proposed door system and to quantify them using a developed software. Subsequently, these results served as inputs for the FEM analysis of the load-bearing components between the door and the vehicle’s structure.
    Źródło:
    Zeszyty Naukowe. Transport / Politechnika Śląska; 2019, 105; 49-64
    0209-3324
    2450-1549
    Pojawia się w:
    Zeszyty Naukowe. Transport / Politechnika Śląska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of simulation computations in investigation of vibration properties of a tricycle
    Autorzy:
    Dižo, Ján
    Blatnický, Miroslav
    Barta, Dalibor
    Melnik, Rafał
    Powiązania:
    https://bibliotekanauki.pl/articles/328688.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    tricycle
    multibody model
    comfort for passengers
    driving safety
    pojazd trójkołowy
    bezpieczeństwo jazdy
    komfort jazdy
    Opis:
    Vibration properties of road vehicles can be in principles evaluated using two ways, i. e. by simulation computations using a virtual model of a vehicle and by measuring on a real vehicle prototype, whereby, their dynamical properties are usually assessed in compliance with to two criterions, namely from the ride comfort for passengers point of view and from the driving safety point of view. The topic of this article is focused on evaluation of passenger’s ride comfort of a tricycle. In this regard, vertical movements of a vehicle are most important. In respect of ride comfort for passengers, accelerations in vertical direction are critical. Accelerations are usually detected on a seat. In regard of driving safety, value of the contact force between a wheel and a road are decisive. In our research we present process of investigation of level of ride comfort for passengers and level of driving safety of a tricycle based on simulation computations using the tricycle multibody model.
    Źródło:
    Diagnostyka; 2019, 20, 3; 97-104
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Feasibility study of a rail vehicle damper fault detection by artificial neural networks
    Autorzy:
    Melnik, Rafał
    Koziak, Seweryn
    Dižo, Ján
    Kuźmierowski, Tomasz
    Piotrowska, Ewa
    Powiązania:
    https://bibliotekanauki.pl/articles/24200807.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
    Tematy:
    rail vehicle
    damper
    suspension
    fault detection
    neural networks
    Opis:
    The aim of the study was to investigate rail vehicle dynamics under primary suspension dampers faults and explore possibility of its detection by means of artificial neural networks. For these purposes two types of analysis were carried out: preliminary analysis of 1 DOF rail vehicle model and a second one - a passenger coach benchmark model was tested in multibody simulation software - MSC.Adams with use of VI-Rail package. Acceleration signals obtained from the latter analysis served as an input data into the artificial neural network (ANN). ANNs of different number of hidden layers were capable of detecting faults for the trained suspension fault cases, however, achieved accuracy was below 63% at the best. These results can be considered satisfactory considering the complexity of dynamic phenomena occurring in the vibration system of a rail vehicle.
    Źródło:
    Eksploatacja i Niezawodność; 2023, 25, 1; art. no. 5
    1507-2711
    Pojawia się w:
    Eksploatacja i Niezawodność
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of driving stability of a vehicle–trailer combination depending on the load’s position within the trailer
    Autorzy:
    Dižo, Ján
    Blatnický, Miroslav
    Droździel, Paweł
    Melnik, Rafał
    Caban, Jacek
    Kafrik, Adam
    Powiązania:
    https://bibliotekanauki.pl/articles/2204650.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    driving stability
    vehicle–trailer combination
    multibody simulation
    Opis:
    Passenger cars are a means of transportation used widely for various purposes. The category that a vehicle belongs to is largely responsible for determining its size and storage capacity. There are situations when the capacity of a passenger vehicle is not sufficient. On the one hand, this insufficient capacity is related to a paucity in the space needed for stowing luggage. It is possible to mount a rooftop cargo carrier or a roof basket on the roof of a vehicle. If a vehicle is equipped with a towbar, a towbar cargo carrier can be used for improving its space capacity. These accessories, however, offer limited additional space, and the maximal load is determined by the maximal payload of the concerned vehicle. If, on the other hand, there is a requirement for transporting a load with a mass or dimensions that are greater than what could be supported using these accessories, then, provided the vehicle is equipped with a towbar, a trailer represents an elegant solution for such demanding requirements. A standard flat trailer allows the transportation of goods of various characters, such as goods on pallets, bulk material, etc. However, the towing of a trailer changes the distribution of the loads, together with changes of loads of individual axes of the vehicle–trailer axles. The distribution of the loads is one of the key factors affecting the driving properties of a vehicle–trailer combination in terms of driving stability, which is mainly a function of the distribution of the load on the trailer. This research introduces a study into how the distribution of the load on a trailer influences the driving stability of a vehicle–trailer combination. The research activities are based on simulation computations performed in a commercial multibody software. While the results presented in the article are reached for a particular vehicle–trailer combination as well as for a particular set of driving conditions, the applicability of the findings can also be extended more generally to the impact that the load distributions corresponding to various vehicle–trailer combinations have on the related parameters and other driving properties.
    Źródło:
    Acta Mechanica et Automatica; 2023, 17, 1; 60--67
    1898-4088
    2300-5319
    Pojawia się w:
    Acta Mechanica et Automatica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Strength analysis of an off-road lorry frame
    Autorzy:
    Dižo, Ján
    Blatnický, Miroslav
    Droździel, Pawel
    Semenov, Stanislav
    Mikhailov, Evgeniy
    Kurtulík, Jakub
    Powiązania:
    https://bibliotekanauki.pl/articles/2116409.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    frame
    offroad truck
    strength analysis
    finite element method
    rama
    samochód terenowy
    analiza wytrzymałościowa
    metoda elementów skończonych
    Opis:
    The lorry frame is the main carrying part of a lorry, composed of several components. These components are connected by joints into one structural unit and it forms the lorry chassis. The contribution of this article is focused on thestrength analyses of a backbone frame, which is used on an off-road lorry chassis. Strength analyses are carried out utilising the finite element method. This article presents a created three-dimensional model of the frame and definition of boundary conditions (loads, the definition of degrees of freedom) needed for simulation computations. Results of the numerical calculations are the main parts of this article. Attention is mainly centred on the distribution of stresses of the frame under defined loads and its deformations.
    Źródło:
    Zeszyty Naukowe. Transport / Politechnika Śląska; 2021, 110; 23--33
    0209-3324
    2450-1549
    Pojawia się w:
    Zeszyty Naukowe. Transport / Politechnika Śląska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Possibilities of improving a rail vehicle running safety with independently rotating wheels
    Autorzy:
    Mikhailov, Evgeny
    Semenov, Stanislav
    Shvornikova, Hanna
    Dižo, Ján
    Blatnický, Miroslav
    Droździel, Paweł
    Kravchenko, Kateryna
    Powiązania:
    https://bibliotekanauki.pl/articles/2176117.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    rail vehicle
    running safety
    independently rotating wheels
    mathematical calculation
    pojazd szynowy
    bezpieczeństwo jazdy
    niezależnie obracające się koła
    obliczeniA matematyczne
    Opis:
    This work is focused on the possible ways of improving the running safety of a railway vehicle, which uses IRWs (independently rotating wheels) in a bogie. It discusses the main positive and negative properties of an application of IRWs for a railway vehicle while it is running in a curve. There are evaluated running properties of a railway vehicle in terms of safety for IRWs and a standard wheelset (SW). It is assumed that a wheelset design with IRWs will reduce the risk of derailment of a railway vehicle in a curve with a smaller radius because it will be reached a more favourable distribution of decisive forces in the wheel/rail contact. A designed wheelset with IRWs differs from other IRWs designs; in this case, only a flange can rotate independently from a wheel treat surface about the axis of rotation. Further, this research presents an analysis of a friction forces distribution of the friction forces in a contact of a flange and a rail head and a comparison with an SW. The obtained results allow concluding that it is advisable to use the wheels with the perspective wheel design (including independently rotating) to reduce the resistance to movement and improve the running properties of a railway vehicle for safety.
    Źródło:
    Zeszyty Naukowe. Transport / Politechnika Śląska; 2022, 115; 93--106
    0209-3324
    2450-1549
    Pojawia się w:
    Zeszyty Naukowe. Transport / Politechnika Śląska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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