| 摘 要： | In analyzing hyperbolic shells of revolution with non-axisymmeteric imperfections, anapproximate method based on simulating the effect of imperfections by the application offictitious normal pressure loading on the perfect shell is investigated.In the analysis of ashell of revolution with a bulge-type imperfection under non-axisymmetric loads,anefficient algorithm of applying the method is developed;the effect of individual curvatureerrors on stress resultants and couples are separately considered,while the interactionsamong various curvature errors are properly treated in the analysis by an iterativeprocedure. This algorithm avoids repeated analyses for non-axisymmetric loads and maybe implemented with a purely axisymmetric analysis capability.A hyperbolic cooling tower shell with a bulge-type imperfection is analyzed under deadload and wind load conditions by the equivalent load method.A direct analysis of theimperfect shell is also made by a specialized finite element program. Through numericalstudie
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