核级气动执行机构的模态分析和研究

Modal Analysis and Research of Nuclear Pneumatic Actuator

简述核级气动执行机构产品的结构,详细阐述了分析时模型简化处理过程。在模态分析时,介绍了材料和网格控制、边界条件施加技巧,进行了装配体的模态分析并提取了模态解。将抗震鉴定试验的数据与理论分析进行对比,理论分析结果与试验数据基本吻合,证实了提出的理论分析方法在实际产品设计和工程实践中应用的有效性。

The paper introduces the product structure of nuclear pneumatic actuator,and expounds on the model simplification process of analysis. In the modal analysis, it introduces the techniques of the material and grid control and boundary conditions applied, and then carries out modal analysis of the assembly and extracts the modal solution. Comparing the seismic experimental data with theoretical analysis.the analysis results are basically consistent with the data, which confirms the theory analysis method suggested is effective when applied in the actual product design and engineering practice.