A rotating spring-mass system is considered using polar coordinates. The system contains a cubic nonlinear spring with damping. The angular velocity harmonically fluctuates about a mean velocity. The dimensionless equations of motion are derived first. The velocity fluctuations resulted in a direct and parametric forcing terms. Approximate analytical solutions are sought using the Method of Multiple Scales, a perturbation technique. The primary resonance and the principal parametric resonance cases are investigated. The amplitude and frequency modulation equations are derived for each case. By considering the steady state solutions, the frequency response relations are derived. The bifurcation points are discussed for the problems. It is found that speed fluctuations may have substantial effects on the dynamics of the problem and the fluctuation frequency and amplitude can be adjusted as passive control parameters to maintain the desired responses.
REFERENCES(18)
1.
Pakdemirli M, Ulsoy A.G. and Ceranoglu A. (1994): Transverse vibrations of an axially accelerating string.– Journal of Sound and Vibration, vol.169, No.2, pp.179-196.
Öz H.R., Pakdemirli M. and Boyacı H. (2001): Nonlinear vibrations and stability of an axially moving beam with time dependent velocity.– International Journal of Non-Linear Mechanics, vol.36, No.1, pp.107-115.
Pakdemirli M. and Öz H. R. (2008): Infinite mode analysis and truncation to resonant modes of axially accelerated beam vibrations.– Journal of Sound and Vibration, vol.311, pp.1052-1074.
Parker R.G. and Lin Y. (2001): Parametric instability of axially moving media subjected to multifrequency tension and speed fluctuations.– Journal of Applied Mechanics, vol.68, pp.49-57.
Ghayesh M.H., Yourdkhani M, Balar S. and Reid T. (2010): Vibrations and stability of axially travelling laminated composite beam.– Applied Mathematics and Computation, vol.217, pp.545-556.
Lin H., Zhou C., Shi J. and Feng Z. (2012): Transverse vibration of axially accelerating moving fabric: Experiment and Analysis.– Applied Mechanics and Materials, vol. 226-228, pp.150-153.
Ghayesh M. H. and Amabili M. (2013): Steady state transverse response of an axially moving beam with time dependent axial speed.– International Journal of Non-Linear Mechanics, vol.49, pp.40-49.
Shao M., Wu J., Wang Y. and Wu Q. (2019): Nonlinear parametric vibration and chaotic behaviors of an axially accelerating moving membrane.– Shock and Vibration, vol.2019, Article ID 6294814.
Sahoo B. (2019): Nonlinear dynamics of a viscoelastic traveling beam with time-dependent axial velocity and variable axial tension.– Nonlinear Dynamics, vol.97, pp.269-296.
Sahoo B. (2020): Nonlinear dynamics of a viscoelastic beam traveling with pulsating speed, variable axial tension under two-frequency parametric excitations and internal resonance.– Nonlinear Dynamics, vol.99, pp.945-979.
Pakdemirli M, Ulsoy A.G. (1997): Perturbation analysis of spindle speed variation in machine tool chatter.– Journal of Vibration and Control, vol.3, pp.261-278.
Zhao D., Liu J. and Wang L. (2016): Nonlinear free vibration of a cantilever nanobeam with surface effects: Semi-analytical solutions.– International Journal of Mechanical Sciences, vol.113, pp.184-195.
Linnett J.A. (1974): The effect of rotation in the steady state response of a spring-mass system under harmonic excitation.– Journal of Sound and Vibration, vol.35, No.1, pp.1-11.
Provatidis C.G. and Gamble M.A. (2013): Support forces in a synchronized rotating spring-mass system and its electromagnetic equivalent.– International Journal of Electromagnetics and Mechanics, vol.4, pp.313-334.
Pakdemirli M (2023): The new shift perturbation method with applications to vibrational problems.– Journal of Vibration and Control, DOI: 10.1177/10775463231176400.
Pakdemirli M. (2003): Comparison of higher order versions of the method of multiple scales for an odd non-linearity problem.– Journal of Sound and Vibration, vol.262, pp.989-998.
Pakdemirli M., Karahan M.M.F. and Boyacı H. (2011): Forced vibrations of strongly nonlinear systems with multiple scales lindstedt poincare method.– Mathematical and Computational Applications, vol.16, No.4, pp.879-889.
We process personal data collected when visiting the website. The function of obtaining information about users and their behavior is carried out by voluntarily entered information in forms and saving cookies in end devices. Data, including cookies, are used to provide services, improve the user experience and to analyze the traffic in accordance with the Privacy policy. Data are also collected and processed by Google Analytics tool (more).
You can change cookies settings in your browser. Restricted use of cookies in the browser configuration may affect some functionalities of the website.