形状初期不整の分布形状が剛接合単層ラチスドームの弾塑性座屈荷重に与える影響
2000 年 65 巻 531 号 p. 109-115
詳細
2000 年 65 巻 531 号 p. 109-115
In the present paper, the effect of the geometrical initial imperfections on the buckling load of rigidly jointed single-layer latticed domes is investigated. The imperfection is assumed to be the similar shape of the first elasto-plastic buckling mode obtained form the elasto-plastic buckling analysis, and it is given only in the vertical direction at each node of the dome. As a result, the elasto-plastic buckling laod of the domes is estimated by using Modified Dunkerley Formulation as a function of λs or Λ with the knock-down factor γ. Here, it is shown that the curve of the buckling load of the domes is defined as a function of the amplitude of the imperfection.
