Recent Submissions

  • Dynamics of Energy Harvesting Mechanical System in the Vicinity of 1:1 Resonance 

    Puzyrov, Volodymyr; Awrejcewicz, Jan; Losyeva, Nataliya (Wydawnictwo Politechniki ŁódzkiejPolitechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki.Lodz University of Technology PressLodz University of Technology. Faculty of Mechanical Engineering. Department of Automation, Biomechanics and Mechatronics., 2021)
    Energy harvesting provides a useful way to power electronic devices without using batteries or electrical wiring. Energy harvesting can be defined as the conversion of environmental energy, such as mechanical, thermal, ...
  • Influence of a relatively high frequency structure vibrations on the dynamics of real stick-slip motion 

    Olejnik, Paweł; Górniak vel Górski, Adrian; Cebulak, Maciej; Awrejcewicz, Jan (Wydawnictwo Politechniki ŁódzkiejPolitechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki.Lodz University of Technology PressLodz University of Technology. Faculty of Mechanical Engineering. Department of Automation, Biomechanics and Mechatronics., 2021)
    The work concerns the research on the impact of structure vibrations on the dynamics of frictional contact of bodies moving in relation to each other and remaining in frictional contact, causing a stick-slip motion. A ...
  • Determination of global damping and stiffness coefficients of journal foil bearing 

    Łagodziński, Jakub; Tkacz, Eliza; Kozanecki, Zbigniew (Wydawnictwo Politechniki ŁódzkiejPolitechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki.Lodz University of Technology PressLodz University of Technology. Faculty of Mechanical Engineering. Department of Automation, Biomechanics and Mechatronics., 2021)
    For the few last years, in modern low-power generation systems, a demand for oilfree compressors has appeared. The development of reliable bearing technology for this relatively high-speed small turbomachinery could be ...
  • Higher order asymptotic homogenization for dynamical problems 

    Awrejcewicz, J.; Andrianov, I.I.; Diskovsky, A.A. (Wydawnictwo Politechniki ŁódzkiejPolitechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki.Lodz University of Technology PressLodz University of Technology. Faculty of Mechanical Engineering. Department of Automation, Biomechanics and Mechatronics., 2021)
    In general, asymptotic homogenization methods are based on the hypothesis of perfect scale separation. In practice, this is not always the case. The problem arises of improving the solution in such a way that it becomes ...
  • Anisotropic friction sliding rule influence on the mechanical systems dynamics 

    Wijata, Adam; Stańczyk, Bartosz; Awrejcewicz, Jan (Wydawnictwo Politechniki ŁódzkiejPolitechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki.Lodz University of Technology PressLodz University of Technology. Faculty of Mechanical Engineering. Department of Automation, Biomechanics and Mechatronics., 2021)
    Anisotropic friction can produce friction force which is not collinear with a sliding direction. How much friction deviates from a sliding direction is described with a so-called sliding potential or equivalently a sliding ...
  • Estimation the Domain of Attraction for a System of Two Coupled Oscillators with Weak Damping 

    Awrejcewicz, Jan; Puzyrov, Volodymyr; Losyeva, Nataliya; Savchenko, Nina; Nikolaieva, Oksana (Wydawnictwo Politechniki ŁódzkiejPolitechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki.Lodz University of Technology PressLodz University of Technology. Faculty of Mechanical Engineering. Department of Automation, Biomechanics and Mechatronics., 2021)
    When solving a wide class of problems of nonlinear dynamics, the stability property of a given system regime is a prerequisite for design. An important role is played by the concept of the domain of attraction (DoA) of ...
  • Dynamic analysis of functionally graded sandwich shells resting on elastic foundations 

    Tetyana, Shmatko; Lidiya, Kurpa; Awrejcewicz, Jan (Wydawnictwo Politechniki ŁódzkiejPolitechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki.Lodz University of Technology PressLodz University of Technology. Faculty of Mechanical Engineering. Department of Automation, Biomechanics and Mechatronics., 2021)
    Free vibrations of sandwich shallow shells resting on elastic foundations are investigated. It is assumed that shell consists of three layers of the different thickness. Different schemes of arrangement of layers are ...
  • Bionic hand control using EMG signals 

    Sencerek, Jędrzej; Zagrodny, Bartłomiej (Wydawnictwo Politechniki ŁódzkiejPolitechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki.Lodz University of Technology PressLodz University of Technology. Faculty of Mechanical Engineering. Department of Automation, Biomechanics and Mechatronics., 2021)
    Abstract. 3D printed prototype a human hand which is controled by sEMG signal was created to simulate two types of fingers motions. The first one includes fingers flexion/extension and the second one is focused on opposing ...
  • Construction and 3D model of stand for investigating a non-ideal forcing in a nonlinear chain dynamics of self-excited oscillators with friction 

    Rogala, Patryk; Olejnik, Paweł; Awrejcewicz, Jan (Wydawnictwo Politechniki ŁódzkiejPolitechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki.Lodz University of Technology PressLodz University of Technology. Faculty of Mechanical Engineering. Department of Automation, Biomechanics and Mechatronics., 2021)
    The research involves application and research on a non-ideal forcing to modelling and identification of vibrating systems with friction. It is still an innovative approach in the numerical analysis of vibrations of ...
  • Mathematical Modelling of an extended Swinging Atwood Machine 

    Yakubu, Godiya; Olejnik, Paweł; Awrejcewicz, Jan (Wydawnictwo Politechniki ŁódzkiejPolitechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki.Lodz University of Technology PressLodz University of Technology. Faculty of Mechanical Engineering. Department of Automation, Biomechanics and Mechatronics., 2021)
    An extended model for a variable-length pendulum’s mechanical application is being derived from the Swinging Atwood Machine (SAM). An electrical component consisting of an electromagnet and armature coil is attached on ...
  • Geometrically nonlinear vibrations of double-layered nanoplates 

    Awrejcewicz, Jan; Mazur, Olga (Wydawnictwo Politechniki ŁódzkiejPolitechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki.Lodz University of Technology PressLodz University of Technology. Faculty of Mechanical Engineering. Department of Automation, Biomechanics and Mechatronics., 2021)
    The geometrically nonlinear vibrations of simply supported double-layered graphene sheet systems are considered in the presented manuscript. The interaction between layers is taken into account due to van der Waals forces. ...
  • Thermal waves in composite membrane with circular inclusions in hexagonal lattice structures 

    Andrianov, I.V.; Awrejcewicz, J.; Starushenko, G.A.; Kvitka, S.A. (Wydawnictwo Politechniki ŁódzkiejPolitechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki.Lodz University of Technology PressLodz University of Technology. Faculty of Mechanical Engineering. Department of Automation, Biomechanics and Mechatronics., 2021)
    Non-stationary heat conduction in the fibre composite materials is studied. 2D сomposite media consists of matrix with circular inclusions in hexagonal lattice structures. The perfect contact between different materials ...
  • Design and simulation of a lower limb exoskeleton with linear electric actuators 

    Grzelczyk, Dariusz; Jarzyna, Olga; Awrejcewicz, Jan (Wydawnictwo Politechniki ŁódzkiejPolitechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki.Lodz University of Technology PressLodz University of Technology. Faculty of Mechanical Engineering. Department of Automation, Biomechanics and Mechatronics., 2021)
    In the present study, we proposed and investigated a relatively simple and inexpensive construction of a lower limb exoskeleton driven by linear electric actuators and controlled by an Arduino microcontroller board. ...
  • Conditions Regulating Tumor Cell Behaviour in Biological Systems with Memory of States 

    Dzyubak, Larysa; Dzyubak, Oleksandr; Awrejcewicz, Jan (Wydawnictwo Politechniki ŁódzkiejPolitechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki.Lodz University of Technology PressLodz University of Technology. Faculty of Mechanical Engineering. Department of Automation, Biomechanics and Mechatronics., 2021)
    For biological systems with memory of states there were found conditions which regulate tumor cell behaviour. These conditions depend on parameters of the multi-parametric space. Based on the Masing–Bouc-Wen’s framework, ...
  • Drive-by-wire of a converted into electric car Syrena 105 enabling Hardware-In-Loop tests of driving 

    Adamski, Paweł; Olejnik, Paweł (Wydawnictwo Politechniki ŁódzkiejPolitechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki.Lodz University of Technology PressLodz University of Technology. Faculty of Mechanical Engineering. Department of Automation, Biomechanics and Mechatronics., 2021)
    In this work, replacing an electronic throttle pedal and a driver in an electric car converted into electric by a hardware-in-loop workbench is described, highlighting the advantage of drive-by-wire feature that appeared ...
  • Magnetic oscillator under excitation with controlled initial phase 

    Polczyński, Krystian; Bednarek, Maksymilian; Awrejcewicz, Jan (Wydawnictwo Politechniki ŁódzkiejPolitechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki.Lodz University of Technology PressLodz University of Technology. Faculty of Mechanical Engineering. Department of Automation, Biomechanics and Mechatronics., 2021)
    The work contains the results of numerical simulations of the dynamics of a magnetic pendulum system subjected to excitation with a varying initial phase. A magnetic pendulum consists of a magnet fixed to the end of its ...
  • Energy flow control in a system of coupled pendulums using magnetic field 

    Pilipchuk, Valery; Polczyński, Krystian; Bednarek, Maksymilian; Awrejcewicz, Jan (Wydawnictwo Politechniki ŁódzkiejPolitechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki.Lodz University of Technology PressLodz University of Technology. Faculty of Mechanical Engineering. Department of Automation, Biomechanics and Mechatronics., 2021)
    In the presented work, we proposed a methodology of controlling the resonance energy exchange in mechanical systems by creating appropriate electromagnetic fields around the system’s structural subcomponents. It has been ...
  • Nonlinear Dynamics of Forced Oscillator Subjected to a Magnetic Interaction 

    Skurativskyi, Sergii; Kudra, Grzegorz; Witkowski, Krzysztof; Wasilewski, Grzegorz; Awrejcewicz, Jan (Wydawnictwo Politechniki ŁódzkiejPolitechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki.Lodz University of Technology PressLodz University of Technology. Faculty of Mechanical Engineering. Department of Automation, Biomechanics and Mechatronics., 2021)
    It is considered the system composed of a cart moving along a linear rolling bearing with harmonic excitation produced by a stepper motor with an unbalanced disk. The magnetic field is generated by a pair of non-point ...
  • Research of the dynamics of a physical pendulum forced with an electromagnetic field 

    Ogińska, Ewelina; Grzelczyk, Dariusz; Awrejcewicz, Jan (Wydawnictwo Politechniki ŁódzkiejPolitechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki.Lodz University of Technology PressLodz University of Technology. Faculty of Mechanical Engineering. Department of Automation, Biomechanics and Mechatronics., 2021)
    In this paper, both experimental and numerical results of the dynamics of a pendulum with a neodymium magnet and an aerostatic bearing are presented. The experimental stand includes the pendulum with the neodymium magnet ...
  • Parametric Vibrations of a System of Oscillators Connected with Periodically Variable Stiffness 

    Kudra, Grzegorz; Witkowski, Krzysztof; Seth, Soumyajit; Polczyński, Krystian; Awrejcewicz, Jan (Wydawnictwo Politechniki ŁódzkiejPolitechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki.Lodz University of Technology PressLodz University of Technology. Faculty of Mechanical Engineering. Department of Automation, Biomechanics and Mechatronics., 2021)
    The work is a part of a larger project concerning investigations of different configurations of connected oscillators with direct and parametric forcing sources. Among others, we present preliminary numerical studies of ...

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