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Effects of Time-Varying Mesh Stiffne...

Purdue University.

Effects of Time-Varying Mesh Stiffness, and its Modifications, on Planetary Gear Dynamics.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Effects of Time-Varying Mesh Stiffness, and its Modifications, on Planetary Gear Dynamics./
Author:	Mitra, Eeshan.
Description:	1 online resource (122 pages)
Notes:	Source: Masters Abstracts International, Volume: 56-06.
Subject:	Mechanical engineering. -
Online resource:	click for full text (PQDT)
ISBN:	9780355156409

Effects of Time-Varying Mesh Stiffness, and its Modifications, on Planetary Gear Dynamics.
Mitra, Eeshan.

Effects of Time-Varying Mesh Stiffness, and its Modifications, on Planetary Gear Dynamics. - 1 online resource (122 pages)

Source: Masters Abstracts International, Volume: 56-06.

Thesis (M.S.M.E.)--Purdue University, 2017.

Includes bibliographical references

Time-varying mesh stiffness in gears has been found to be the primary cause for vibration in gears. This parametric excitation opens up bands of unstable regions of frequency, rather than just isolated resonances. Despite its many advantages, planetary gears, by virtue of having more components, and therefore more degrees of freedom, add to the complexity in terms of vibrational response.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9780355156409Subjects--Topical Terms:

557493
Mechanical engineering.
Index Terms--Genre/Form:

554714
Electronic books.

Effects of Time-Varying Mesh Stiffness, and its Modifications, on Planetary Gear Dynamics.
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040 $a MiAaPQ $b eng $c MiAaPQ
100 1 $a Mitra, Eeshan. $3 1148488
245 1 0 $a Effects of Time-Varying Mesh Stiffness, and its Modifications, on Planetary Gear Dynamics.
264 0 $c 2017
300 $a 1 online resource (122 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Masters Abstracts International, Volume: 56-06.
500 $a Adviser: Charles M. Krousgrill.
502 $a Thesis (M.S.M.E.)--Purdue University, 2017.
504 $a Includes bibliographical references
520 $a Time-varying mesh stiffness in gears has been found to be the primary cause for vibration in gears. This parametric excitation opens up bands of unstable regions of frequency, rather than just isolated resonances. Despite its many advantages, planetary gears, by virtue of having more components, and therefore more degrees of freedom, add to the complexity in terms of vibrational response.
520 $a This research is aimed at carrying out a numerical investigation on the effects of mesh stiffness. To establish this objective, a discretized model of a planetary gear assembly is set up using a lumped parameter approach. Subsequently, its natural frequencies are determined, and categorized based on the structured properties of modal response. A numerical algorithm using the Floquet theory is developed to trace the stability boundaries of a reduced order model. The boundaries for a Rayleigh-damped system are also traced, and compared with the instabilities of the undamped system.
520 $a Qualitative dependence of the external gear mesh stiffness on tooth profile modification is discussed, and stability boundaries are re-computed for different kinds of modifications. Forced response plots for 'relieved' profiles show that while the peak amplitudes of super-harmonic resonances decrease dramatically, amplitudes for primary resonances increase, owing to an increased strength of the fundamental frequency component in a modified stiffness profile.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Mechanical engineering. $3 557493
650 4 $a Mechanics. $3 527684
655 7 $a Electronic books. $2 local $3 554714
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690 $a 0346
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a Purdue University. $b Mechanical Engineering. $3 845672
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10257335 $z click for full text (PQDT)

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