Wyświetlanie pozycji 48-67 z 267

    • Damage of the Surface Layer Gears in Grinding Process. 

      Wójcik, Ryszard; Wlazło, Jakub (Lodz University of Technology. Faculty of Mechanical Engineering. Department Division of Dynamics.Wydawnictwo Politechniki Łódzkiej. Wydział Mechaniczny. Katedra Dynamiki Maszyn., 2013)
      The influence of the grinding process on the condition of the surface layer (SL) obtained by the treatment of the gear with grinding wheels Al2O3, CBN, GF, SG, alloy steels with different parameters of the grinding process ...
    • Damping behaviour of thin-walled composite columns under impact in-plane loading 

      Teter, A.; Kołakowski, Zbigniew (2012)
      In this paper the analysis of the damping behaviour of thin-walled composite columns with open stiffened cross-sections subjected to in-plane pulse loading is described. The pulse loading of a rectangular shape is ...
    • Decomposition of the Equations of Motion in the Analysis of Dynamics of a 3-DOF Nonideal System 

      Awrejcewicz, Jan; Starosta, Roman; Sypniewska-Kamińska, Grażyna (2014)
      The dynamic response of a nonlinear system with three degrees of freedom, which is excited by nonideal excitation, is investigated. In the considered system the role of a nonideal source is played by a direct current motor, ...
    • Development of a CFD model for propeller simulation. 

      Stajuda, Mateusz; Karczewski, Maciej; Obidowski, Damian; Jóźwik, Krzysztof (Lodz University of Technology. Faculty of Mechanical Engineering. Department Division of Dynamics.Wydawnictwo Politechniki Łódzkiej. Wydział Mechaniczny. Katedra Dynamiki Maszyn., 2016)
      The article presents a development of numerical model for a single propeller simulation and comparison of obtained results with experimental data available from a test campaign in scale 1:1. Described simulation is a steady ...
    • Diagnostyka procesu szlifowania kłowego wałków. 

      Lajmert, Paweł; Kruszyński, Bogdan; Sikora, Małgorzata; Ostrowski, Dariusz (Stowarzyszenie Inżynierów i Techników Mechaników Polskich, 2014)
      W procesie monitorowania szlifowania kłowego wałków może być rejestrowanych szereg sygnałów pomiarowych takich jak składowe siły szlifowania, sygnały drgań, czy emisji akustycznej. W artykule porównano różne metody ...
    • Different types of chimera states: An interplay between spatial and dynamical chaos 

      Dudkowski, Dawid; Maistrenko, Yuri; Kapitaniak, Tomasz (2014)
      We discuss the occurrence of chimera states in networks of nonlocally coupled bistable oscillators, in which individual subsystems are characterized by the coexistence of regular (a fixed point or a limit cycle) and chaotic ...
    • Discretion in Professional Practice and in Engineering Ethics 

      Wajszczyk, Piotr (Wydawnictwo Uniwersytetu Łódzkiego, 2015)
      There is an ongoing investigation by scholars of ethics and economics into whether human decision making and the resultant acts should be guided by rules and proce-dures or by judgment and discretion. Although each of these ...
    • Dostrajanie wirtualnego modelu wrzeciennika szlifierki na podstawie eksperymentalnych badań obiektu 

      Pawłowski, Witold; Bojanowski, Sebastian (2014)
      W artykule przedstawiono procedurę dostrajania wirtualnego modelu (cyfrowego prototypu) wrzeciennika ściernicy szlifierki do otworów. Dostrajanie wykonano, przeprowadzając eksperymentalne badania statyczne oraz identyfikacyjny ...
    • Double pendulum colliding with a rough obstacle. 

      Sypniewska-Kamińska, Grażyna; Starosta, Roman; Awrejcewicz, Jan (Politechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki., 2015)
      The externally excited and damped vibrations of the double pendulum in the vertical plane are considered. The pendulum can collide with a rough obstacle many times during its motion. The pendulum is modeled as a piecewise ...
    • Dynamic axial crushing of flawed thin-walled square section tubes. 

      Ferdynus, M.; Kotełko, M. (Wydział Mechaniczny. Katedra Wytrzymałości Materiałów i Konstrukcji. Politechnika ŁódzkaLodz University of Technology. Faculty of Mechanical Engineering. Department of Strength of Materials and Structures, 2015)
    • Dynamic behavior of an axially moving wide web. 

      Cedrowska, Agnieszka; Marynowski, Krzysztof (Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej, 2012)
      Theoretical and experimental dynamic analysis of an axially moving wide composite web is presented in this paper. The mathematical model of the system under consideration has the form of a differential equation with partial ...
    • The Dynamic Model of Plane Mechanism with Variable Ratio. 

      Cink, Jacek; Kosucki, Andrzej (Lodz University of Technology. Faculty of Mechanical Engineering. Department Division of Dynamics.Wydawnictwo Politechniki Łódzkiej. Wydział Mechaniczny. Katedra Dynamiki Maszyn., 2016)
      The paper contains the proposal how to reduce many–elements plane mechanism with one degree of freedom to chosen axis or line as one–element model of mechanism. Mostly the place of reduction is driving element in rotary ...
    • Dynamic response of plate under temperature field pulse. 

      Czechowski, L. (Wydział Mechaniczny. Katedra Wytrzymałości Materiałów i Konstrukcji. Politechnika ŁódzkaLodz University of Technology. Faculty of Mechanical Engineering. Department of Strength of Materials and Structures, 2015)
      The work dealt with the numerical simulation of functionally graded plate under thermal pulse loading. It was stated that the great influence on the plate response had the distribution index, the duration and the kind of ...
    • Dynamic response of thin-walled girders subjected to combined load 

      Włuka, Piotr; Urbaniak, Mariusz; Kubiak, Tomasz (2012)
    • Dynamic Response of Viscoplastic Thin-Walled Griders in Torsion. 

      Czechowski, Leszek (Lodz University of Technology. Faculty of Mechanical Engineering. Department Division of Dynamics.Wydawnictwo Politechniki Łódzkiej. Wydział Mechaniczny. Katedra Dynamiki Maszyn., 2013)
      This work deals with an analysis of isotropic or orthotropic girders subjected to transient dynamic loads. The duration of dynamic loading was assumed to be equal to a period of the natural fundamental flexural vibrations ...
    • Dynamics of articulated vehicles by means of multibody methods. 

      Adamiec-Wójcik, Iwona; Awrejcewicz, Jan; Grzegożek, Witold; Wojciech, Stanisław (Politechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki., 2015)
      The paper presents modelling of an articulated vehicle by means of joint coordinates, which enable us to describe the motion of the system with a minimal number of generalised coordinates. We consider a model of a ...
    • Dynamics of two coupled 4-DOF mechanical linear sliding systems with dry friction. 

      Kosińska, Angelika; Grzelczyk, Dariusz; Awrejcewicz, Jan (Politechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki., 2015)
      The paper introduces a model of two identical coupled 4-DOF mechanical linear sliding systems with dry friction coupled with each other by a linear torsional spring. The appropriate components (bodies) of the coupled ...
    • Dynamics simulations of a rigid body lying on a vibrating table with the use of special approximations of the resulting contact forces. 

      Szewc, Michał; Wojtunik, Igor; Kudra, Grzegorz; Awrejcewicz, Jan (Politechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki., 2015)
      The work presents simulations and dynamics of a rigid body lying on a vibrating table. An attempt of shaping and control the body dynamical behavior, by the use of manipulation of parameters of the table oscillations, ...