Journal of Mechanical Design and Vibration

ISSN (Print): 2376-9564

ISSN (Online): 2376-9572

Editor-in-Chief: Shravan H. Gawande

Website: http://www.sciepub.com/journal/JMDV

   

Article

Dynamic Modeling of PGT using Analytical & Numerical Approach

1Department of Mechanical Engineering, M. E. Society’s College of Engineering, Pune, S.P. Pune University, Maharashtra, India


Journal of Mechanical Design and Vibration. 2015, 3(1), 24-30
doi: 10.12691/jmdv-3-1-3
Copyright © 2015 Science and Education Publishing

Cite this paper:
S. S. Ghorpade, A. B. Kadam, D.A. Mane, S. H. Gawande, S. N. Shaikh. Dynamic Modeling of PGT using Analytical & Numerical Approach. Journal of Mechanical Design and Vibration. 2015; 3(1):24-30. doi: 10.12691/jmdv-3-1-3.

Correspondence to: S.  S. Ghorpade, Department of Mechanical Engineering, M. E. Society’s College of Engineering, Pune, S.P. Pune University, Maharashtra, India. Email: saudamini1994@gmail.com

Abstract

Gears are one of the most critical components in industrial rotating machinery. There is a vast amount of literature on gear modelling. The objectives in dynamic modelling of gears has varied from vibration analysis and noise control, to transmissions errors and stability analysis over at least the past five decades. The ultimate goal of this paper is to perform planetary gear train modeling as in [1] to study the effect deflection and stresses on surface pitting and scoring. This paper is an extension of the work performed by the authors as in [1], in which the experimental work was carried out to study the effect of planet phasing on noise and subsequent resulting vibrations of Nylon-6 planetary gear drive.

Keywords

References

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[10]  A. Kahraman, “Natural-modes of planetary gear trains”. Journal of Sound and Vibration, 173 (1), 125-130, 1994.
 
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[12]  J. Lin, R.G. Parker, “Analytical characterization of the unique properties of planetary gear free vibration”. Journal of Vibration and Acoustics, 121(3), 316-321, 1999.
 
[13]  J. Lin, R.G. Parker, “Structured vibration characteristics of planetary gears with unequally spaced planets”. Journal of Sound and Vibration, 233(50), 921-928, 2000.
 
[14]  J. Lin, R.G. Parker, “Sensitivity of planetary gear natural frequencies and vibration modes to model parameters”. Journal of Sound and Vibration, 228 (1), 109-128, 1999.
 
[15]  J. Lin, R.G. Parker, “Natural frequency veering in planetary gears”. Mechanics of Structures and Machines, 29(4), 411-429, 2001.
 
[16]  J. Lin, R.G. Parker, “Planetary gear parametric instability caused by mesh stiffness variation”. Journal of Sound and Vibration, 249 (1), 129-145, 2002.
 
[17]  A. Kahraman, G.W. Blankenship, “Planet mesh phasing in epicyclic gear sets”. International Gearing Conference, Newcastle, Wash, USA, 1994.
 
[18]  R.G. Parker, “A physical explanation for the effectiveness of planet phasing to suppress planetary gear vibration”. Journal of Sound and Vibration, 236(4), 561-573, 2000.
 
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Article

Vibration Control of an Electromechanical Model with Time-Dependent Magnetic Field

1Department of Mathematics, Faculty of Science, Al-Azhar University, Gaza, Palestine


Journal of Mechanical Design and Vibration. 2016, 4(1), 1-9
doi: 10.12691/jmdv-4-1-1
Copyright © 2016 Science and Education Publishing

Cite this paper:
Usama H. Hegazy, Jihad Y. Abu Ful. Vibration Control of an Electromechanical Model with Time-Dependent Magnetic Field. Journal of Mechanical Design and Vibration. 2016; 4(1):1-9. doi: 10.12691/jmdv-4-1-1.

Correspondence to: Usama  H. Hegazy, Department of Mathematics, Faculty of Science, Al-Azhar University, Gaza, Palestine. Email: uhijazy@yahoo.com, u.hejazy@alazhar.edu.ps

Abstract

This paper presents a study of the nonlinear response of the electromechanical (seismograph) system under parametric excitations in the mechanical and electrical parts with periodically time-varying magnetic field. The case of subharmonic (parametric) resonance is considered and examined. Approximated solutions are sought applying the method of multiple scales. Numerical simulations are carried out to illustrate the steady-state response and the stability of the solutions using the frequency response function and time series solution.

Keywords

References

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Article

An Experimental Investigation of Closed-Loop Impedance Pumping in a Compliant, Elastic Tube Millistructure by Variation of Perturbation Location

1Department of Mechanical Engineering, The University of Akron, Akron, OH 44325, U.S.A


Journal of Mechanical Design and Vibration. 2017, 5(1), 1-10
doi: 10.12691/jmdv-5-1-1
Copyright © 2017 Science and Education Publishing

Cite this paper:
Nicholas G. Garafolo, Bryan C. Rich, Matthew J. Cymbal. An Experimental Investigation of Closed-Loop Impedance Pumping in a Compliant, Elastic Tube Millistructure by Variation of Perturbation Location. Journal of Mechanical Design and Vibration. 2017; 5(1):1-10. doi: 10.12691/jmdv-5-1-1.

Correspondence to: Nicholas  G. Garafolo, Department of Mechanical Engineering, The University of Akron, Akron, OH 44325, U.S.A. Email: nicholas.g.garafolo@uakron.edu

Abstract

Flow through a fluid-filled compliant tube microstructure subject to periodic perturbations is not widely reported. An understanding of this phenomena is sought herein, as it may be useful for design of biological flows in microfluidic devices. An experiment conducted at the milli-scale to study the fluid flow produced within a closed-loop network of tubing, having a compliant millitube section subject to periodic perturbations from a probe is presented, and provides a basis for a micro-scale experiment. To test the fluid response, the boundary of the compliant millitube section was periodically perturbed by the probe at a variety of frequencies at five locations. Experimental results demonstrate fluid circulation within the closed-loop of tubing, which varies significantly with the frequency and location of applied perturbations. Overall, the study herein illustrates a unique design for pumping which utilizes periodic vibrations of a compliant tube structure to create a net positive displacement of fluid.

Keywords

References

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