Vibrational Behaviour of Rotors with Gear Couplings in Case of Insufficient Coupling Lubrication

Bachschmid, N.; Curami, A.; Petrone, Francesco

doi:10.1007/978-1-4471-1979-1_29

Cited by 4 publications

(3 citation statements)

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“…5 These functions, as mentioned previously, are univocally defined if, once a certain ratio is assigned between the width b and the diameter D of the bearing, the temperature T is assumed to be constant in the meatus: on the contrary, when having to define the temperature distribution in the meatus, other independent variables are involved in the problem such as, for example, the input temperature of the lubricant in the meatus, so we obtain, for each pair of values Q Ã and X Ã , families of curves A v ð Þ and b v ð Þ functions, in turn, of the input temperature of the lubricant as well as of the ratio b/D.…”

Section: Analytical Definition Of the Static And Dynamic Characteristmentioning

confidence: 97%

“…Once the force field caused by the presence of the fluid film has been analytically defined, it is possible to linearise the expressions of F xc and F yc around the generic 5 As mentioned, A v ð Þ and b v ð Þ can also be defined experimentally using proximity sensors to measure the position x co and y co described by the centre of the pin with respect to the bearing, upon variation of the angular velocity Ω and upon variation of the load applied to bearing Q. 6.2 Description of the System Composed …position of equilibrium of the journal x co and y co , as already shown in Chap.…”

Section: Analytical Definition Of the Static And Dynamic Characteristmentioning

confidence: 99%

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Rotordynamics

Cheli¹,

Diana²

2015

Advanced Dynamics of Mechanical Systems

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So far in the discussion we have illustrated the methods used for the dynamic analysis of mechanical systems. The main purpose of analysis has always been both to study forced motion and to study the stability of these systems and, therefore, analysis of perturbed motion around the steady-state or rest condition. In describing the various types of system which, we should remember, has been subdivided into dissipative systems and systems subject to force fields, we have included various examples of applications, with the main aim of better highlighting the problem and to better illustrate the methods of analysis used. The subject of rotordynamics which will be addressed in this chapter is now proposed with a dual purpose:• to provide basic knowledge to the engineer who has to handle the design and use of machinery, since rotors are essential and vital organs in any machinery; • to offer this subject, given the multitude of problems that it entails, as a valid example of the use of the techniques illustrated in the previous chapters.

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Section: Analytical Definition Of the Static And Dynamic Characteristmentioning

confidence: 97%

Section: Analytical Definition Of the Static And Dynamic Characteristmentioning

confidence: 99%

Rotordynamics

Cheli¹,

Diana²

2015

Advanced Dynamics of Mechanical Systems

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“…Kramer [7] discussed the bending moments on the coupling, and derived a simple equation. Bachschmid et al [8] analyzed the behavior of the gear coupling between the turbine and the compressor by means of an FEM. In their dynamic model the gear coupling was simulated by a very thin beam element, so they did not consider the relative motion between the hub and the sleeve of the coupling.…”

Section: Introductionmentioning

confidence: 99%