Analysis of vibro-impacts in a torsional system under both wide open throttle and coast conditions with focus on the multi-staged clutch damper

Abstract This paper presents a method of obtaining the next trial frequency from the results given by the previous Holzer table. The basis of the method is the effect of a small (fictitious) change in moment of inertia on the natural frequency of the torsional system. Although basically different, the method leads to a result which is very close to that given by Crandall and Strang. The relative merits of the two methods depend on whether the trial frequency is above or below the exact one and on whether or not the next approximation will overshoot the exact value.

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Torsional System: Instability of Closed-Loop Systems

Mechanical Instability ◽

10.1002/9781118600849.ch3 ◽

2013 ◽

pp. 153-200

Keyword(s):

Closed Loop ◽

Closed Loop Systems ◽

Torsional System

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Experimental study of vibration suppression for uncertain two-mass torsional system

2016 12th IEEE International Conference on Control and Automation (ICCA) ◽

10.1109/icca.2016.7505410 ◽

2016 ◽

Author(s):

Jiayu Ye ◽

Jing Cui ◽

Zhongyi Chu

Keyword(s):

Experimental Study ◽

Vibration Suppression ◽

Torsional System

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A Closed-Form Planet Load Sharing Formulation for Planetary Gear Sets Using a Translational Analogy

Journal of Mechanical Design ◽

10.1115/1.3042160 ◽

2009 ◽

Vol 131 (2) ◽

Cited By ~ 43

Author(s):

H. Ligata ◽

A. Kahraman ◽

A. Singh

Keyword(s):

Closed Form ◽

Discrete Model ◽

Deformable Body ◽

Planetary Gear ◽

Load Sharing ◽

Position Errors ◽

Model Predictions ◽

Planetary Gear Sets ◽

Torsional System

A simplified discrete model to predict load sharing among the planets of a planetary gear set having carrier planet position errors is presented in this study. The model proposes a translational representation of the torsional system and includes any number of planets positioned at any spacing configuration. The discrete model predictions are validated by comparing them to (i) the predictions of a deformable-body planetary gear set model and (ii) planet load sharing measurements from planetary gear sets having three to six planets. A set of closed-form planet load sharing formulas are derived from the discrete model for gear sets having equally-spaced planets for conditions when all of the planets are loaded. These formulas allow, in an accurate and direct way, calculation of planet loads as a function of position errors associated with each planet.

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