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Title: Mechanical oscillators described by a system of differential-algebraic equations (English)
Author: Pražák, Dalibor
Author: Rajagopal, Kumbakonam R.
Language: English
Journal: Applications of Mathematics
ISSN: 0862-7940 (print)
ISSN: 1572-9109 (online)
Volume: 57
Issue: 2
Year: 2012
Pages: 129-142
Summary lang: English
Category: math
Summary: The classical framework for studying the equations governing the motion of lumped parameter systems presumes one can provide expressions for the forces in terms of kinematical quantities for the individual constituents. This is not possible for a very large class of problems where one can only provide implicit relations between the forces and the kinematical quantities. In certain special cases, one can provide non-invertible expressions for a kinematical quantity in terms of the force, which then reduces the problem to a system of differential-algebraic equations. We study such a system of differential-algebraic equations, describing the motions of the mass-spring-dashpot oscillator. Assuming a monotone relationship between the displacement, velocity and the respective forces, we prove global existence and uniqueness of solutions. We also analyze the behavior of some simple particular models. (English)
Keyword: differential-algebraic equations
Keyword: existence and uniqueness of solutions
Keyword: mechanical oscillators
MSC: 34A09
MSC: 34A12
MSC: 34C15
idZBL: Zbl 1249.34017
idMR: MR2899728
DOI: 10.1007/s10492-012-0009-8
Date available: 2012-03-05T07:01:49Z
Last updated: 2020-07-02
Stable URL:
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Reference: [2] Meirovitch, L.: Elements of Vibration Analysis, 2nd ed.McGraw-Hill New York (1986).
Reference: [3] Rajagopal, K. R.: A generalized framework for studying the vibration of lumped parameter systems.Mechanics Research Communications 37 (2010), 463-466 10.1016/j.mechrescom.2010.05.010
Reference: [4] Rudin, W.: Real and Complex Analysis, 3rd ed.McGraw-Hill New York (1987). Zbl 0925.00005, MR 0924157
Reference: [5] Vrabie, I. I.: Differential Equations. An Introduction to Basic Concepts, Results and Applications.World Scientific Publishing River Edge (2004). Zbl 1070.34001, MR 2092912, 10.1142/5534


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