SEDL / STP / STP568-EB / STP33158S

Studies on the Impact Structural Damage of Composite Blades

Sun, CT
Senior resident research associates, National Research Council, Air Force Materials Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio

Sierakowski, RL
Senior resident research associates, National Research Council, Air Force Materials Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio

Pages: 16    Published: Jan 1975

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Abstract

The dynamic response of jet engine fan blades subjected to foreign object impact loadings has been investigated. Two analytical methods based upon a discrete mass distribution have been used for model purposes. Numerical results for blade natural frequencies, tip displacements, and bending moments have been obtained for boron-aluminum, graphite-epoxy, titanium, and stainless steel blades. Numerical data have been discussed for the various materials considered.