Analytical and Experimental Simulation of Fan Blade Behavior and Damage Under Bird Impact

[+] Author and Article Information
H. C. Teichman, R. N. Tadros

Pratt & Whitney Canada Inc., Mississauga, Ontario, Canada

J. Eng. Gas Turbines Power 113(4), 582-594 (Oct 01, 1991) (13 pages) doi:10.1115/1.2906281 History: Received January 31, 1990; Online April 24, 2008


An extensive analytical and experimental program has been undertaken to investigate the Foreign Object Damage resistance capabilities of external components for small gas turbofan engines. A transient nonlinear impact analysis has been used to predict the structural response of fan blades under bird ingestion conditions. This analysis is based on finite elements, a three-dimensional bird load model, and an interactive structure-to-bird contact algorithm. Experiments were designed and carried out to record large blade deformations during bird impact, and were used to validate and calibrate the analytical models. The analytical models and testing program are described, and dominant fan blade response and failure modes are presented. Predicted results demonstrate good correlation with tests. Analysis application to fan blade design and other engine components is recommended.

Copyright © 1991 by The American Society of Mechanical Engineers
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