论文部分内容阅读
在石油化工容器设计计算中,多采用施转壳无矩理论轴对称问题的平衡方程式。正确地确定旋转壳的曲率半径成为旋转壳应力和变形计算的关键。本文针对有关文献中的第一曲率半径和第二曲率半径的符号确定问题,提出笔者的一点看法。石油化工容器多数为薄壁旋转壳体,而且通常为轴对称问题的旋转壳。由于无矩理论忽略了弯矩,横剪力随之消失,使得问题得到简化。薄壁壳体的无矩理论是壳体一般理论的基本部分,广泛应用于薄壁容器的设计。钢制压力容器的设计多数应用旋转壳无矩理论轴对称问题的平衡方程式,下面谈一下应用公式时值得注意的一个问题一曲率半径的符号确定。
In petrochemical container design and calculation, the balance equation of axisymmetric problem of shell torque is mostly used. Correctly determining the radius of curvature of the rotating shell is the key to calculate the stress and deformation of the rotating shell. In this paper, the first radius of curvature and the second radius of curvature in the literature to determine the symbol of the problem, the author’s point of view. The majority of petrochemical vessels are thin-walled rotating housings and are often rotational shells with axisymmetric problems. Since moment-free theory ignores the moment, the transverse shear disappears, which simplifies the problem. The momentless theory of thin-walled shells is an essential part of the general theory of shells and is widely used in the design of thin-walled vessels. The design of steel pressure vessel mostly uses the equilibrium equation of the axisymmetric problem of moment of inertia of the rotating shell. Here is a noteworthy question about the formula of the radius of curvature.