ランダムな形状初期不整を有する剛接合単層トラスドームの弾性座屈解析

概要

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In the present paper, the effect of imperfections on the elastic buckling loads and mode shapes of externally-loaded single layer reticulated domes is investigated. The types of buckling concerned here are the general buckling, the local buckling and the member buckling. As to the geometrical parameter of domes, the characteristic value S is adopted which represents the openness and slenderness of the dome. The maximum value of the imperfection is assumed to be the normal random variable. The buckling loads are computed by the linear and the nonlinear buck-ling analysis using the finite element method. The statistical values are calculated by the three-points estimates method. The main points of interest are the influence of the shape and the extent of an imperfection on the buckling loads.
1990-12-30