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RISCharacterization of Nonlinear Rattling Behavior of a Gear Pair Through a Validated Torsional Model
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Dynamic response of a gear pair subjected to input and output torque or velocity fluctuations is examined analytically. Such motions are commonly observed in various powertrain systems and identified as gear rattle or ...
VibroImpact Motions of a ThreeDegreeofFreedom Geartrain Subjected to Torque Fluctuations: Model and Experiments
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this study, a multimesh gear system subjected to torque fluctuations is employed as an example to study vibroimpacts of multidegreeoffreedom systems having multiple clearances. Such rotational systems are common in ...
A Rattle Noise Severity Index for Multi-Mesh Gear Trains Subjected to Torque Fluctuations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: External fluctuation torques acting on gear trains having clearances often cause vibro-impact motions with resultant rattle noise issues. In this study, an impact velocity-based rattle severity parameter that correlates ...
Experimental and Theoretical Investigation of Vibro-impact Motions of a Gear Pair Subjected to Torque Fluctuations to Define a Rattle Noise Severity Index
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Vibro-impacts are common in various automotive engine and transmission gear applications. They are known to cause excessive noise levels, often called rattling or hammering. Input and output fluctuations acting on such ...
An Investigation of Dynamic Behavior of Electric Vehicle Gear Trains
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The automotive industry has been experiencing a significant transition toward electrified powertrains in recent years. A torsional model of a common type of electric vehicle (EV) drivetrains is proposed to demonstrate ...
A Helical Gear Pair Pocketing Power Loss Model
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A new fluid dynamics model is proposed to predict the power losses due to pocketing of air, oil, or an airoil mixture in the helical gear meshes. The proposed computational procedure treats a helical gear pair as a combination ...
A Gear Load Distribution Model for a Planetary Gear Set With a Flexible Ring Gear Having External Splines
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In order to accurately predict ring gear deformations and to investigate the effects of ring gear flexibility on quasi-static behaviors of planetary gear sets, a complete load distribution model of planetary gear sets ...
In Memoriam: Veniamin I. Goldfarb
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Veniamin I. Goldfarb, a well-known scholar and educator, passed away on November 12, 2019, at the age of 78. As the Director of the Institute of Mechanics of the Izhevsk State Technical University, Professor Goldfarb was ...
An Experimental Study on the Accuracy of Cumulative Damage Models in Gear Tooth Bending Fatigue
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Tooth bending fatigue failure is a primary design concern for gear designers in power transmission applications. Fracture of a gear tooth in operation results in overload conditions to adjacent teeth, which cascades into ...