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分别采用壳单元模型和多串梁模型对２００ＭＷ核供热堆（ＮＨＲ－２００）紧贴式安全壳，压力壳及吊篮，上部导向架等堆内构件进行了详细的动力分析。壳模型中各部件之间的连接以等效梁单元模拟。由于这种模型考虑了壳体局部变形对刚度的贡献，因此比传统的梁模型更加准确、可靠。在多串梁模型中，作者对壳体支撑截面提出一种新的简化办法，以沿支座弹性主轴的弹簧单元模拟壳体局部变形对刚度的贡献，建立了可以同时考虑水平和竖直地震输入的三维模型。另外，通过对压力壳和吊篮之间不可压流场的分析，得到了流体的耦合附加质量矩阵，并通过修改总体质量阵的办法引入多串梁模型。
The detailed dynamic analysis of the inner components of the 200MW nuclear heating reactor (NHR-200), such as the close-packed containment, pressure shell, gondola and upper guide frame, is carried out by using shell element model and multi-string model respectively. The connections between the components in the shell model are modeled as equivalent beam elements. Because this model considers the contribution of shell deformation to stiffness, it is more accurate and reliable than the traditional beam model. In the multi-beam model, the authors propose a new simplified approach to the shell support section. By simulating the contribution of local deformation of the shell to the stiffness of the spring element along the elastic main axis of the support, a method is proposed to consider both horizontal and vertical earthquakes Enter the 3D model. In addition, by analyzing the incompressible flow field between the pressure shell and the basket, the additional mass matrix of the fluid is obtained and the multi-beam model is introduced by modifying the overall mass matrix.