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本文应用线性小挠度理论,根据起重机的结构特点,给出了离散加肋圆柱壳在中心轴向压缩、弯曲和扭转共同作用下失稳临界应力的微分方程。对中心轴压和偏心轴压两种工况下仅有纵肋加强的圆柱壳给出了理论解和例题。同时进行了实验研究,推荐了实用的设计计算方法。
In this paper, the linear small deflection theory is applied, and according to the structural characteristics of the crane, the differential equation of the critical stress of the discrete stiffened cylindrical shell under axial compression, bending and twisting is given. Theoretical solutions and examples are given for cylindrical shells with longitudinal rib reinforcement under central and axial eccentric pressures. At the same time, an experimental study was conducted and a practical design calculation method was recommended.