本文用有限元素法对集中力作用下的薄壁加劲壳进行应力分析,推导了变轴力杆—受剪板模型的元素刚度矩阵,提出了横向构件和边界约束的处理方法。用满应力法对结构进行综合,在调优过程中,受压应力控制的元件采用“同步”迭代格式,并引入了必要的几何约束,优化结果,重量有明显降低。 In this paper, the finite element method is used to analyze the stress of thin-walled stiffened shell subjected to concentrated force. The element stiffness matrix of variable-force rod-sheared plate model is deduced. The treatment methods of transverse members and boundary constraints are proposed. With the stress method, the structure is integrated. During the tuning process, the components controlled by compressive stress adopt the “synchronous” iterative format, and introduce the necessary geometric constraints to optimize the results. The weight is significantly reduced.