Abstract
The object of the present paper is to formulate the the efficient method for the nonlinear dynamic analyses of rotational shells by the combined use of the finite element method and the mode superposition method. The effects of the geometrical imperfections are taken into consideration. In the Part 2, a shallow spherical cap having a clamped edge subjected to the lateral pressure is analysed for λ=5, 6, 7, 8 and 9 and the results are compared to be in fair agreement with those given by other authers. The shell subjected to the simultaneous dynamical action of a uniform pressure and a concentrated load on the apex with various ratio is investigated and the results show the large amount of reducction of the dynamic buckling load due to a slight concentrated load. The interaction formula for the dynamic buckling of the lateral pressure and the concetrated load is discussed.
