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储罐除了受自重、液体内压作用外,还受到风载荷的作用,从而在储罐中产生应力,应力过大会引起储罐的损坏。提出风载荷作用下圆柱形储罐分析的位移有限元法,根据圆柱形储罐属于轴对称壳体这一结构特点,用圆柱壳单元和圆环壳单元将其离散化,单元之间以结点圆相连接,风载荷和位移沿环向展开成三角级数,降低了计算维数,减少了计算工作量。用编制的有限元分析程序对一个算例的计算表明,该方法能方便有效地计算风载荷作用下圆柱形储罐的应力,可为圆柱形储罐的设计提供理论依据。
In addition to the weight of the tank, the role of liquid pressure, but also by the wind load, resulting in stress in the tank, the stress caused by the General Assembly will damage the tank. The finite element method for the displacement of a cylindrical tank under the wind load is proposed. According to the structural characteristics of a cylindrical tank belonging to the axisymmetric shell, the cylindrical shell unit and the annular shell unit are used to discretize the unit. Dot-connected, wind load and displacement along the ring to the triangular progression, reducing the calculation of dimensions, reducing the computational workload. The calculation of an example by using the finite element analysis program shows that the method can calculate the stress of the cylindrical tank under the wind load easily and effectively, which can provide the theoretical basis for the design of the cylindrical tank.