A-4 遠心力及び熱荷重を受ける一辺固定反対称積層平板の変形(材料I)

概要

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With stretching-twisting coupling property, antisymmetric laminate plate usually twists when loaded by in-plane forces. In this paper, the twisting deformation of arbitrary antisymmetric ([θ_1/θ_2/θ_3…]antisymmetric) laminate, loaded by centrifugal force or temperature change, is analyzed by Rayleigh-Ritz (RR) method. By mathematical deductions, the volume-integration process in RR analysis for total potential calculation is simplified as the surface-integration, to raise the analyzing efficiency. The deformation functions are assumed to be polynomial functions of x-variable up to the 6^<th> order, and y-variable up to the 2^<nd> order. Results of the present analysis are compared with those from FEM calculation to show that the analyzing scheme renders good numerical accuracy. Using this scheme, the twisting deformation of 16-ply antisymmetric laminates, stacked by 7-pair 30°plies and one pair 45°plies, are investigated. The optimum lamination layup is proposed, by which the plate has small thermal deformation during curing process, but reserves sufficient stretching-twisting coupling effect under centrifugal forces.
社団法人日本ガスタービン学会の論文
2000-10-20