In planetary transmissions, the input torque is split between a number of parallel sun-pinion-ring gear paths. Under ideal conditions, each parallel path carries the same amount of torque. However, manufacturing errors in the pinion pin-hole location cause unequal load sharing between the parallel paths. The nature of this load sharing behavior depends upon the number of pinions in the planetary system. This load sharing behavior is studied for 4, 5, and 6-pinion variants of a planetary transmission. Critical manufacturing tolerances are identified and loss function curves are generated. The effects of sun gear support stiffness and pinion needle bearing stiffness on the load sharing results are also studied. It is shown that as the number of pinions in a planetary transmission increases, the pin-hole position error tolerance has to be tightened in order to reap the full benefits of load sharing between the pinions. Gear system analysis modules (GSAM) is an analytical tool that can model entire gear systems and will be used in this paper to quantify the load sharing between pinions. The numerical techniques implemented in GSAM will be briefly reviewed.
Skip Nav Destination
Article navigation
Article
Application of a System Level Model to Study the Planetary Load Sharing Behavior
Avinash Singh
Avinash Singh
Advanced Gear Systems Group, Advanced Power Transfer, GM Powertrain
General Motors Corporation
, 30240 Oak Creek Drive, Wixom, MI 48393
Search for other works by this author on:
Avinash Singh
Advanced Gear Systems Group, Advanced Power Transfer, GM Powertrain
General Motors Corporation
, 30240 Oak Creek Drive, Wixom, MI 48393 J. Mech. Des. May 2005, 127(3): 469-476 (8 pages)
Published Online: June 23, 2004
Article history
Received:
August 22, 2003
Revised:
June 23, 2004
Citation
Singh, A. (June 23, 2004). "Application of a System Level Model to Study the Planetary Load Sharing Behavior." ASME. J. Mech. Des. May 2005; 127(3): 469–476. https://doi.org/10.1115/1.1864115
Download citation file:
Get Email Alerts
Related Articles
Flexible Multibody Dynamic Modeling of a Horizontal Wind Turbine Drivetrain System
J. Mech. Des (November,2009)
Nonlinear Dynamic Modeling of Gear-Shaft-Disk-Bearing Systems Using Finite Elements and Describing Functions
J. Mech. Des (May,2004)
Design of a Calibration Phantom for Measuring the Temporal Resolution of a Tomographic Imaging Device
J. Med. Devices (September,2007)
Influence of Planetary Needle Bearings on the Performance of Single and Double Pinion Planetary Systems
J. Mech. Des (January,2007)
Related Proceedings Papers
Related Chapters
Compromise between Tensile and Fatigue Strength
New Advanced High Strength Steels: Optimizing Properties
Introduction and Definitions
Handbook on Stiffness & Damping in Mechanical Design
Tribology-by-Design for Bearing and Gear Steel Tribology
Bearing and Transmission Steels Technology