Abstract

The extreme problem of finding upper (kinematic) limit load of rigid-plastic fiber-reinforced spherical shallow shells and plates, which are circular in plan, is formulated and solved. The structures are clamped and have rigid insert. Two-layer shell model is used. The materials of components are rigid-perfectly plastic and asymmetric in tension and compression. The binder is isotropic or orthotropic. The structural model of composition takes into account two-dimensional stress state in the components. The piecewise-linear yield curves are constructed for radial-circumferential and spiral reinforcement. Comparisons results with other studies are given and influence of reinforcement parameters on limit load is investigated.

摘要

制定并解决了寻找平面上呈圆形的硬塑纤维增强球形浅壳和板的上限（运动）极限载荷的极限问题。该结构被夹紧并具有刚性插入物。使用双层壳模型。组件的材料是刚性-完美塑性的，并且在拉伸和压缩方面是不对称的。粘合剂是各向同性或正交各向异性的。成分的结构模型考虑了组件中的二维应力状态。分段线性屈服曲线是为径向-周向和螺旋钢筋构建的。给出了与其他研究的比较结果，并研究了钢筋参数对极限载荷的影响。