Abstract: In this paer, effects of hy drostatic pressures on the natural frequencies of cylindrical liquid storage containers are analyzed by using nonlinear strain-displacement equation of the shell, and the system matrix equation of motion is derived with an additive stiffness matrix due to the presence of the initial stress field.A comparison betw een the computed dynamic characteristics and the results from experiments is made, showing that they are in good agreement.

Key words: liquid storage container, hydrostatic pressure, natural frequency

摘要： 采用壳体几何非线性理论,通过在系统自振方程中引入附加刚度矩阵,分析了液体静水压力对圆柱形储液容器自振频率的影响,并将计算结果同实验数据进行了比较,表明本文采用的方法是实用和可行的.

关键词: 储液容器, 静水压力, 自振频率