The modelling and analysis of shock absorbers with stroke-dependent damping

• Autorzy: Ferdek, U.

Warianty tytułu

PL

Modelowanie i analiza amortyzatora z tłumieniem zależnym od amplitudy

• Języki publikacji: EN

Abstrakty

EN

In order to obtain the characteristics of a damping force which depends on the amplitude and frequency of the excitation, a modification to the vehicle shock absorber is proposed in this paper. Within the range of small amplitudes, the ‘soft’ characteristics improve riding comfort, while within the resonance ranges, the increased damping force provides a higher level of ride safety. A nonlinear model of the system is introduced, taking into account various strategies of oil-flow control. Utilising numerical integration methods, the influence of excitation parameters and constructional parameters on the characteristics of the damper is investigated.

PL

W pracy zaproponowano koncepcję amortyzatora samochodowego, którego charakterystyka zależy od amplitudy i częstotliwości wymuszenia. W zakresie małych amplitud charakterystyka miękka poprawia komfort jazdy. W zakresach rezonansowych zwiększona siła tłumienia zapewnia większe bezpieczeństwo jazdy. Opracowano nieliniowy model układu uwzględniający różne strategie sterowania przepływem oleju. Wykorzystując metody numerycznego całkowania, zbadano wpływ parametrów wymuszenia oraz parametrów konstrukcyjnych na charakterystyki tłumika.

Słowa kluczowe

PL

tłumik hydrauliczny; zawieszenie samochodu; nieliniowe drgania

EN

hydraulic damper; vehicle suspension; nonlinear vibrations

• Czasopismo: Technical Transactions
• Rocznik: 2018
• Tom: Vol. 115, iss. 1
• Strony: 163--175
• Opis fizyczny: Bibliogr. 16 poz., il., wz., wykr.

Twórcy

autor

Ferdek, U.

• Faculty of Mechanical Engineering, Cracow University of Technology,

Bibliografia

• [1] Alonso M., Comas Á., Modelling a twin tube cavitating shock absorber, Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering. 220.8, 2006, 1031–1040.
• [2] Benaziz M., Nacivet S., Thouverez F., Nonlinear dynamic analysis of a shock absorber hydraulic spring valve, Proceedings of ISMA International Conference on Noise and Vibration Engineering, 2012, 3857–3870.
• [3] Deferme S., Stroke dependent bypass. U.S. Patent No. 6,918,473. 19 Jul. 2005.
• [4] Farjoud, Ahmadian M., Craft M., Burke W., Nonlinear modelling and experimental characterization of hydraulic dampers: effects of shim stack and orifice parameters on damper performance, Nonlinear Dynamics. 67.2, 2012, 1437–1456.
• [5] Ferdek U., Łuczko J., Modelling and analysis of a twin-tube hydraulic shock absorber, Journal of Theoretical and Applied Mechanics. 50.2, 2012, 627–638.
• [6] Ferdek U., Łuczko J., Performance comparison of active and semi-active SMC and LQR regulators in a quarter-car model, Journal of Theoretical and Applied Mechanics. 53.4, 2015, 811–822.
• [7] Ferdek U., Łuczko J., Vibration analysis of a half-car model with semi-active damping, Journal of Theoretical and Applied Mechanics, 54.2, 2016, 321–332.
• [8] Funke T., Bestle D., Physics-based model of a stroke-dependent shock absorber, Multibody System Dynamics. 30.2, 2013, 221–232.
• [9] Götz O. et al., Dashpot with amplitude-dependent shock absorption, U.S. Patent No. 7,441,639. 28 Oct. 2008.
• [10] Lee C.T., Moon B.Y., Simulation and experimental validation of vehicle dynamic characteristics for displacement-sensitive shock absorber using fluid-flow modelling, Mechanical Systems and Signal Processing. 20.2, 2006, 373–388.
• [11] Nowaczyk M., Vochten J.: Shock absorber with frequency dependent passive valve, U.S. Patent No. 9,441,700. 13 Sep. 2016.
• [12] Prabakar R.S., Sujatha C., Narayanan S., Optimal semi-active preview control response of a half car vehicle model with magnetorheological damper, Journal of Sound and Vibration, 326.3, 2009, 400–420.
• [13] Talbott M.S., Starkey J., An experimentally validated physical model of a high-performance mono-tube damper, SAE Technical Paper, 2002.
• [14] Titurus B., Du Bois J., Lieven N., Hansford R., A method for the identification of hydraulic damper characteristics from steady velocity inputs, Mechanical Systems and Signal Processing. 24.8, 2010, 2868–2887.
• [15] Ventura P., Ferreira C., Neves C., Morais R., Valente A., Reis M.J., An embedded system to assess the automotive shock absorber condition under vehicle operation, Sensors, 2008 IEEE. IEEE, 2008, 1210–1213.
• [16] Witters M., Swevers J., Black-box model identification for a continuously variable, electrohydraulic semi-active damper, Mechanical Systems and Signal Processing, 24.1, 2010, 4–18.

Uwagi

EN

Section "Mechanics"

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).

Identyfikatory

DOI

10.4467/2353737XCT.18.013.7964