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在航空、建筑等工程中常用到具有加劲肋的薄壳。在弹性范围内一般采用的计算方法是把此种薄壳用正交各向异性的壳来代替。但如Ю．Н．Работнов１９］所指出，在塑性范围内这种 计算方法是不合理的，因为纵向与横向的加劲肋都是处于单向应力状态，它们的塑性条件彼此无 关。在本文中讨论了具有加劲肋的薄壳的一种计算模型，这个模型考虑了蒙皮的弯曲，而加劲肋 用集中面积来代替。求得了具有加劲肋的圆柱壳在对称变形情况下的极限条件。讨论了两种进一 步简化的情况，即１）当蒙皮用双层壳来代替时，２）当蒙皮中为薄膜应力状态时。用简单的例 子说明了所求得的极限条件对于决定承载能力之应用。１）坎层兖的削ｔ计算模型最早是由ｍ．１１ｋ６ＯＴＨ（）Ｂ“““在讨论弹塑性髡的问题时提出的。
Thin shells with stiffeners are commonly used in aerospace and construction projects. The commonly used calculation method in the elastic range is to replace the thin shell with an orthotropic shell. But if you do. Н. Работнов 19] pointed out that this method of calculation is unreasonable in the plastic range because both longitudinal and transverse stiffeners are in one-way stress state, and their plastic conditions are not related to each other. In this paper, a computational model of a thin shell with stiffened ribs is discussed. This model takes into account the curvature of the skin and the stiffened ribs are replaced with concentrated areas. The limit conditions for the symmetrical deformation of a cylindrical shell with stiffened ribs are obtained. Two further simplifications are discussed, namely 1) when the skin is replaced with a double shell, 2) when the skin is in a stress state of the film. A simple example is used to illustrate the application of the determined limit conditions for determining load carrying capacity. 1) The computational model for the t-cutting of the ridges was first determined by m. 11k6OTH () B “” "Proposed when discussing the problem of elastoplasticity.