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Equivalent and Simplification of Nickel-Based Superalloy Plates with Close-Packed Film Cooling Holes
Y. M. Zhang, Z. X. Wen, H. Q. Pei, W. Y. Gan, Z. F. Yue
Journal:

Journal of Mechanics / Volume 35 / Issue 3 / June 2019

Published online by Cambridge University Press:

28 August 2018, pp. 359-372

Print publication:

June 2019
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The mechanical properties of thin-walled plate with close-packed film cooling holes are studied based on the equivalent solid material concept. The equivalent principals of the method of equivalent strain energy, homogenization theory and uniform static deformation are considered. A simplification method of square penetration pattern for pitch and diagonal direction loading is presented. The goodness of fit is calculated to determine the optimal method. The tensile deformation, bending deflection, rotation displacement and maximum Mises equivalent stress of simplification plate models are in good agreement with plate models with close-packed film cooling holes. For square penetration pattern for pitch direction loading, the equivalent errors of Mises equivalent stress are all less than 10% when the ligament efficiency is more than 0.6.