Influence of machining accuracy of links on dynamic response of planar mechanisms

• Autorzy: Hać Michał
• Języki publikacji: EN

Abstrakty

EN

In the paper the influence of machining accuracy of mechanism links on their dynamic response is under investigation. As an example a of planar slider-crank mechanism is studied. The influence of different cross-section area within the assumed tolerance on the dynamic behaviour of mechanism’s connection rod is investigated. For vibration analysis of links the finite element method is used with Bernoulli-Euler beam elements. The calculation were conducted for nominal dimensions of the cross section of the crank and for the two cases for connecting rod: 1) for the maximal stiffness and 2) for the minimal stiffness obtained within the given tolerance. The results of analysis show that the changes in dynamic response for different cross-sectional area of mechanism links, within the assumed tolerance of machining, can be quite significant in the case of high-speed precise mechanisms and manipulators.

Słowa kluczowe

EN

FEM; finite elements method; slider-crank mechanism; machining tolerance

PL

MES; metoda elementów skończonych; mechanizm korbowo-wodzikowy; tolerancja obróbki

• Wydawca: Poznan University of Technology. Institute of Applied Mechanics
• Czasopismo: Vibrations in Physical Systems
• Rocznik: 2020
• Tom: Vol. 31, nr 2
• Strony: art. no. 2020207
• Opis fizyczny: Bibliogr. 6 poz., wykr.

Twórcy

autor

Hać Michał

• Institute of Machine Design Fundamentals, Warsaw University of Technology

Bibliografia

• 1. S. Akbari, F. Fallahi, T. Pirbodaghi, Dynamic analysis and controller design for a slider-crank mechanism with piezoelectric actuators, Journal of Computational Design and Engineering, 3 (2016) 312-321
• 2. S. Cheng, S. Liu, Dynamic analysis of slider-crank mechanism with a cracked rod, Math. Problems in Eng., ID 8540546 (2018) https://doi.org/10.1155/2018/8540546.
• 3. M. Hać, Influence of static and dynamic deflection of shaft pins on strength parameters of toothed gear, Machine Dynamic Problems, 29 (1) (2005) 65-76.
• 4. M. Hać, Influence of Material Damping on Dynamics of Slider-Crank Mechanism, Machine Dynamics Research, 36 (2012) 16-25.
• 5. M. Hać, On Equations of Motion of Elastic Linkages by FEM, Mathematical Problems in Engineering, ID 648706 (2013) https://doi.org/10.1155/2013/648706.
• 6. M. Hać, J. Łazęcki, Rigid-body motion of planar mechanisms by finite element method with comparison to the multibody approach, Machine Dynamics Research, 40 (2) (2016) 1-10.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).