放射源跌落冲击响应谱仿真与分析

采用冲击响应谱改进的递归数字滤波法，基于有限元模拟仿真，对密封放射源跌落冲击响应谱(SPS)进行研究。分析放射源包壳不同测点位置、跌落姿态以及跌落高度的最大加速度冲击响应谱特点及规律。结果表明，跌落冲击响应谱能够确定放射源结构在跌落冲击中存在的共振响应，准确计算共振产生放大效应的损伤势，可为放射源结构的抗冲击设计及优化提供依据。

Simulation and Analysis for Drop Impact Response Spectrum of Radioactive Sources

Based on the simulation results of finite element method, the drop impact shock response spectrum (SPS) of sealed radioactive source is studied by using the improved recursive digital filtering method of shock response spectrum. The characteristics and laws of maximum acceleration shock response spectra under different conditions are analyzed, including different positions of metal cladding, falling postures and drop heights. The results show that shock response spectrum can determine the resonance response of the radiation source structure in drop impact, accurately calculate the damage potential of amplification effect caused by resonance, and provide the basis for the anti-shock design and optimization of the radiation source structure.