Wydział Mechaniczny / Faculty of Mechanical Engineering / W1

Stały URI zbioruhttp://hdl.handle.net/11652/1

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Filtry

2006 - 200912010 - 201912020 - 20211

Ustawienia

Tematsearch.filters.applied.operator.equals: search.filters.subject.friction

Wyniki wyszukiwania

Teraz wyświetlane 1 - 3 z 3
  • Pozycja
    Construction and 3D model of stand for investigating a non-ideal forcing in a nonlinear chain dynamics of self-excited oscillators with friction
    (Wydawnictwo Politechniki Łódzkiej, 2021) Rogala, Patryk; Olejnik, Paweł; Awrejcewicz, Jan
    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 mechatronic machines and devices. This will allow to make a much real numerical modelling and more efficient identification of nonlinear dynamic phenomena observed in vibrating systems with friction, and thus, a better modelling of such phenomena in computer programs. To obtain the goal, initial 3D model of the mechanical stand was made in the CAD software. Based on the 3D model, real stand will be built, and experiments will be held to obtain data that will be necessary to ensure correctness of the mathematical model, which also will be studied and developed.
  • Pozycja
    Matematyczne i numeryczne metody analizy bifurkacji i dynamiki chaotycznej układów mechanicznych z tarciem i uderzeniami
    (Wydawnictwo Politechniki Łódzkiej, 2006) Awrejcewicz, Jan; Pyryev, Jurij; Kudra, Grzegorz; Olejnik, Paweł; Wydział Mechaniczny. Politechnika Łódzka.; Faculty of Mechanical Engineering. Lodz University of Technology.; Kapitaniak, Tomasz; Wodziński, Piotr; Kaźmierczak, Marek; Olejnik, Paweł; Jakubowski, Krzysztof; Świder, Jerzy; Grądzki, Ryszard
    Książka obejmuje wprowadzenie do podstaw teoretycznych, modelowania i metod numerycznych, związanych z analizą dynamiki bifurkacyjnej i chaotycznej układów mechanicznych z tarciem i uderzeniami. Autorzy przedstawiają oryginalne metody modelowania i analizy wybranych układów mechanicznych niegładkich oraz prezentują nowe wyniki uzyskane w tym obszarze dynamiki nieliniowej układów dyskretnych.
  • Pozycja
    Synchronization in arrays of coupled self-induced friction oscillators
    (Springer, 2016-11) Marszal, Michał; Saha, Ashesh; Jankowski, Krzysztof; Stefański, Andrzej; Katedra Dynamiki Maszyn. Wydział Mechaniczny. Politechnika Łódzka.; Division of Dynamics. Faculty of Mechanical Engineering. Lodz University of Technology.
    We investigate synchronization phenomena in systems of self-induced dry friction oscillators with kinematic excitation coupled by linear springs. Friction force is modelled according to exponential model. Initially, a single degree of freedom mass-spring system on a moving belt is considered to check the type of motion of the system (periodic, non-periodic). Then the system is coupled in chain of identical oscillators starting from two, up to four oscillators. A reference probe of two coupled oscillators is applied in order to detect synchronization thresholds for both periodic and non-periodic motion of the system. The master stability function is applied to predict the synchronization thresholds for longer chains of oscillators basing on two oscillator probe. It is shown that synchronization is possible both for three and four coupled oscillators under certain circumstances. Our results confirmed that this technique can be also applied for the systems with discontinuities.