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    Wyświetlanie 1-6 z 6
    Tytuł:
    Evaluation of the Damage Initiation of a Composite Thin-Walled Structure, on the Example of the ADUSTER Gyroplane Undercarriage
    Autorzy:
    Szklarek, Karol
    Różyło, Patryk
    Powiązania:
    https://bibliotekanauki.pl/articles/103123.pdf
    Data publikacji:
    2018
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    numerical analysis
    FEM
    ABAQUS
    failure
    analiza numeryczna
    MES
    Abaqus
    niepowodzenie
    Opis:
    The subject of the research was a undercarriage leg of a gyroplane made of composite materials. The aim of the work was to assess the level of damage initiation of the composite gyroplane undercarriage. In the study, a structural capacity analysis was carried out, taking into account the phenomenon of damage initiation. Numerical calculations were conducted based on the finite element method in the ABAQUS® software. The issue was solved according to the Newton-Raphson algorithm.
    Źródło:
    Advances in Science and Technology. Research Journal; 2018, 12, 4; 48-55
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimization of I-section profile design by the finite element method
    Autorzy:
    Różyło, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/103286.pdf
    Data publikacji:
    2016
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    Abaqus
    optimization
    numerical analysis
    Opis:
    This paper discusses the problem of design optimization for an I-section profile. The optimization process was performed using the Abaqus program. The numerical analysis of a strictly static problem was based on the finite element method. The scope of the analysis involved both determination of stresses and displacements in the profile and structure topology optimization. The main focus of the numerical analysis was put on reducing profile volume while maintaining the same load and similar stresses prior to and after optimization. The solution of the optimization problem is just an example of the potential of using this method in combination with the finite element method in the Abaqus environment. Nowadays numerical analysis is the most effective cost-reducing alternative to experimental tests and it enables structure examination by means of a computer.
    Źródło:
    Advances in Science and Technology. Research Journal; 2016, 10, 29; 52-56
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical thermal analysis of a car braking system
    Autorzy:
    Różyło, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/102377.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    Abaqus
    braking system
    numerical analysis
    temperature distribution
    Opis:
    The study involved performing a numerical thermal analysis of selected components in a car braking system. The primary goal of the study was to determine the regions which are most susceptible to variations in temperature, and to determine the degree of thermal impact upon them. The analysis was performed using the Abaqus environment. The examined components of the braking system were made of materials reflecting mechanical properties of the real subassemblies. The FEM analysis enabled determination of the distribution of temperature in the system with respect to the properties of the investigated materials and applied boundary conditions.
    Źródło:
    Advances in Science and Technology. Research Journal; 2017, 11, 2; 38-43
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simulation of the Griffiths Crack Using Own Method of Predicting the Crack Propagation
    Autorzy:
    Podgórski, Jerzy
    Gontarz, Jakub
    Powiązania:
    https://bibliotekanauki.pl/articles/2023448.pdf
    Data publikacji:
    2021
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    fracture mechanics
    X-FEM
    Abaqus user subroutine
    UDMGINI
    griffith’s crack
    mechanika pęknięć
    podprogramy użytkownika abaqus
    pęknięcie Griffitha
    Opis:
    The paper presents the results of numerical simulation of brittle material fracture initiated by Griffith's crack situated at any angle with respect to the load direction. The simulations were performed with the Simulia Abaqus FEA system using the X-FEM method. The direction of the crack propagation was determined using the user's subroutine written in Fortran, implemented in the Abaqus system. The authors programmed several conditions for the direction of the fracture propagation: maximum principal stress criterion, Ottosen-Podgórski criterion, three criteria based on displacements around the crack tip, and the MTS criterion, which is based on stress intensity factors. For the purposes of this study, two shapes of the crack tip were analyzed - sharp and blunted. The relationship between the direction of the initial fracture and the direction of crack propagation was found. The simulations were carried out for the angles of the initial crack from 0° to 90°, every 10°. A theoretical analysis of the implemented criteria was also carried out and compared to numerical results. The influence of the shape of the crack tip on the simulation result was analyzed. It was shown that the simulation results closest to the theoretical results were obtained for the own implementation of the stress-based criteria. It has also been proven that the shape of the crack tip has little effect on the result if the finite element mesh is properly densified. However, the sharp crack has a disadvantage for small initial crack angles. The Author’s method of predicting the crack propagation has been proven correct and effective. This work is also the basis for the further development of the described method.
    Źródło:
    Advances in Science and Technology. Research Journal; 2021, 15, 4; 1-13
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Computational Method of Predicting the Crack Path in Confrontation with Laboratory Tests
    Autorzy:
    Gontarz, Jakub
    Podgórski, Jerzy
    Powiązania:
    https://bibliotekanauki.pl/articles/2201916.pdf
    Data publikacji:
    2023
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    X-FEM
    fracture mechanics
    Abaqus user subroutine
    UDMGINI
    Opis:
    The paper presents the results of laboratory tests and computer simulations of the pull-out test of a rod embedded in a concrete cylindrical sample. The main purpose was to verify the force-displacement relationship and the crack paths. The X-FEM method of fracture simulation was used. The authors compared a simple maximum principal stress criterion, as well as their own method of simulating fracture propagation in brittle materials, implemented with the user subroutine in the Simulia Abaqus FEA system. A number of conclusions were obtained in the analyzes, related to the influence of the finite element mesh size, the method of modeling the rod and its contact with concrete. The advantages of own method were presented. the reasons for the differences between the results of simulations and laboratory tests were presented.
    Źródło:
    Advances in Science and Technology. Research Journal; 2023, 17, 2; 90--110
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Theoretical and experimental analysis of loading impact from the progressive gear on the lift braking distance with the use of the free fall method
    Autorzy:
    Lonkwic, P.
    Różyło, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/103063.pdf
    Data publikacji:
    2016
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    friction drive lift
    progressive gears
    safety
    FEA analysis
    Abaqus
    Opis:
    The gear which is the central safety element of the friction drive lift during braking is exposed to overloading connected with changeable weight which loads the lift braking system. In the article the results of numerical analysis for braking process of CHP 2000 type progressive gear distinguished by an innovative design have been presented. The numerical analysis was conducted with the use of a simulation of the gear roller displacement depending on changeable loading with the support of Abaqus/CAE software. Displacement of the gear roller from the neutral position in which the gear starts loosing energy of speeding up weight to zero was simulated. The results obtained from computer simulations were verified on the basis of a physical experiment at the bench station created to verify braking parameters of the gears with the use of free fall method.
    Źródło:
    Advances in Science and Technology. Research Journal; 2016, 10, 30; 103-109
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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