【摘要】 基于HOUSNER理论和流固耦合相互作用理论对大型立式圆柱储罐的动态特性展开研究。采用ANSYS有限元软件Fluid80单元建立流固耦合有限元模型，并采用Reduced法进行模态分析，对典型低矮型和细高型锚固储罐在1/4、1/2、3/4和设计装液量H下的动态特性进行研究，并对两种模型得出的液面第一阶晃动频率和储罐系统第一阶主振形频率进行对比分析。通过对比基于HOUSNER理论的模型和流固耦合模型的计算结果，对HOUSNER理论公式进行修正，计算结果表明，本文提出的基于HOUSNER理论的修正模型与流固耦合模型计算结果更加接近，本文提出的HOUSENER理论修正模型所预测的储罐第一阶主振形频率最大误差比HOUSENER理论模型降低7.41%,改进了HOUSNER理论公式的不保守性，为核电厂大型储罐的抗震设计提供参考。更多还原

【Abstract】 Based on the HOUSNER theory of the cylindrical tank and the Fluid-Structure-Interactive theory, the dynamic characteristic analysis methods of large cylindrical tank has been studied in this paper. By creating the Fluid-Structure-Interactive FEM model with the ANSYS software, the dynamic characteristic of two typical types of stout and slim cylindrical tank with 1/4, 1/2, 3/4 and full tank design capacity H have been studied by the reduced method. The results of the sloshing frequency and first principle frequency of the tank system are compared. After correction of HOUSEER theory equations, the calculation results are much closer with the results of the Fluid-Structure-Interactive FEM model. The error of the first principle frequency of the tank system predicted by the corrected HOUSNER model proposed by this paper decreases 7.41%, which improve the non-conservatism of the HOUSNER model. The corrected HOUSNER model proposed by this paper can be a reference for the seismic design of large tanks in nuclear power plant.更多还原