Response of non-linear shock absorbers-boundary value problem analysis

• Autorzy: Rahman M. A. , Ahmed U. , Uddin M. S.

Identyfikatory

DOI

10.2478/ijame-2013-0048

• Języki publikacji: EN

Abstrakty

EN

A nonlinear boundary value problem of two degrees-of-freedom (DOF) untuned vibration damper systems using nonlinear springs and dampers has been numerically studied. As far as untuned damper is concerned, sixteen different combinations of linear and nonlinear springs and dampers have been comprehensively analyzed taking into account transient terms. For different cases, a comparative study is made for response versus time for different spring and damper types at three important frequency ratios: one at r = 1, one at r > 1 and one at r <1. The response of the system is changed because of the spring and damper nonlinearities; the change is different for different cases. Accordingly, an initially stable absorber may become unstable with time and vice versa. The analysis also shows that higher nonlinearity terms make the system more unstable. Numerical simulation includes transient vibrations. Although problems are much more complicated compared to those for a tuned absorber, a comparison of the results generated by the present numerical scheme with the exact one shows quite a reasonable agreement.

Słowa kluczowe

EN

shock absorber; untuned vibration damper; frequency ratios; non-linear springs; non-linear dampers; stability; boundary value problem; multisegment method of integration

PL

amortyzator; tłumik drgań; stabilność; wartość graniczna

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2013
• Tom: Vol. 18, no. 3
• Strony: 793--814
• Opis fizyczny: Bibliogr. 24 poz., tab., wykr.

Twórcy

autor

Rahman M. A.

• Department of Mechanical Engineering Bangladesh University of Engineering and Technology (BUET), Dhaka-1000, Bangladesh

autor

Ahmed U.

• Department of Mechanical Engineering Bangladesh University of Engineering and Technology (BUET), Dhaka-1000, Bangladesh

autor

Uddin M. S.

• Department of Mechanical Engineering Bangladesh University of Engineering and Technology (BUET), Dhaka-1000, Bangladesh

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