【摘要】 利用ＳＵＭＴ－ＤＦＰ法研究了静水外压作用下等间距“Ｔ”型环肋圆柱壳和环 肋斜圆锥壳的最轻重量设计问题．把环肋按其型号处理为循环变量．把壳板厚度和 环肋根数当作连续变量．根据给定的壳体半径、壳体长度及各种参数值，本文将求 出壳板厚度、肋骨根数及其型号（对斜圆锥壳还求出斜锥角），使壳体自重与其排 水量之比最小．最后确定结构尺寸时，将壳板厚度和肋骨根数取整并加以验算．更多还原

【Abstract】 The problem of minimum-weight design for ring-stiffened cylindrical and skew conical shell with "T" shaped and equal spaced rings under hydrostatic pressure kas been investigated by means of SUMT-DFP method. The type number of rings is assumed as cyclic variable (method of exhaustion ). The skin thickness and the number of rings are considered as the continuous variables. In this paper, the radius and overall length of shell,as well as tbe proper- ties of material are prescribed, the skin thickness and number of rings and its type number (and also the skew conical angle for the skew conical shell) have been found so that the ratio of net weight and displaced weight of the shell achieves the minimum. When deciding the paramelers of the shell after the optimization process. the skin thickness and number of rings are to be taken integral and the constraints are verified again.更多还原