本文用有限元法研究了加肋和复合材料弹性旋转薄壳的静力问题。分别考虑了密集肋与离散环向肋两种情形。对于密集肋,计入了肋的偏心影响,将此类问题简化为各向异性壳的静力问题。对于离散环肋,准确处理了肋和壳的耦合。考虑了旋转壳离散支承对应力分布的影响。为了得到支承附近的真实应力,进行了二次计算。多数算例与分析解做了比较,说明本文所提供的方法和程序是可靠的。 In this paper, the finite element method is used to investigate the static forces of ribbed and composite elastic thin shells. Two cases of dense ribs and discrete circular ribs were considered respectively. For dense ribs, the eccentric effects of the ribs are included, simplifying such problems into the static problem of anisotropic shells. For discrete ring ribs, the coupling of the ribs and shells is accurately handled. The influence of the discrete support of the rotating shell on the stress distribution is considered. In order to obtain the true stress in the vicinity of the support, a second calculation was performed. Most of the examples are compared with the analytical solutions, which shows that the methods and procedures provided in this paper are reliable.