Auxiliary Bearing Design Guides in Active Magnetic Bearing System: High Fidelity Ball Bearing and Damper Model Including Thermal Growth Effects for ... Auxiliary Service and Blade Loss Simulation [Paperback]

Guangyoung Sun (Author)

Book Description

Publication Date: September 25, 2008 | ISBN-10: 3639080491 | ISBN-13: 978-3639080490

In this book, a high fidelity ball bearing and squeeze film damper (SFD) model including thermal effects is developed for an energy storage flywheel system with active magnetic bearings (AMBs). A high fidelity nonlinear ball bearing employs the Hertzian contact load-deflection model between ball and races, and predicts ball contact load and stress during rotor drop. Thermal growths and expansions of bearing components are estimated and applied to the ball bearing dynamics. A SFD model, based on FEM, determines oil film pressure distribution, calculates viscous damping force correcting oil film cavitation and predicts power loss due to viscous dissipation in oil film. Using the model capabilities, a variety of simulations for the energy storage flywheel system are conducted to investigate the effects of auxiliary bearing design parameters on the dynamic responses of flywheel rotor drop. Auxiliary bearing design guides to provide safe landing of rotor and to prevent high speed backward whirl are presented based on performance indices from the simulation results.

Editorial Reviews

About the Author

Guangyoung Sun, ASME fellow, currently works for Samsung Techwin Inc., Turbomachinery Center as a senior engineer. He received his B.S. Degree from Inha University in Korea and M.S., Ph.D. Degrees from Texas A&M University all in Mechanical Engineering. He was also a NRC research fellow in NASA-GRC, Cleveland in Ohio.

Product Details

• Paperback: 244 pages
• Publisher: VDM Verlag (September 25, 2008)
• Language: English
• ISBN-10: 3639080491
• ISBN-13: 978-3639080490
• Product Dimensions: 9 x 6 x 0.5 inches
• Shipping Weight: 12 ounces (View shipping rates and policies)
• Average Customer Review: 4.0 out of 5 stars  See all reviews (1 customer review)
• Amazon Best Sellers Rank: #1,480,459 in Books (See Top 100 in Books)

Customer Reviews

Most Helpful Customer Reviews

4.0 out of 5 stars Substantial rotor drop model, October 26, 2008

By 

Amelie J. - See all my reviews

This review is from: Auxiliary Bearing Design Guides in Active Magnetic Bearing System: High Fidelity Ball Bearing and Damper Model Including Thermal Growth Effects for ... Auxiliary Service and Blade Loss Simulation (Paperback)

It comprehensively covered the rotor drop simulations including detailed ball bearing model and thermal increase by the rotor/backup-bearing mechanical contacts, and provided insightful design guides for backup bearing design in a magnetic bearing system. Highly recommended !!