存储测试装置聚氨酯灌封料减振特性研究

为研究聚氨酯封料的减振特性，通过霍普金森杆实验获得了不同密度聚氨酯材料的力学参数，对运用该参数进行的侵彻硬目标仿真获得的结果与空气炮实验测得数据进行了相关性计算，二者间具有较高的相关系数表明仿真模型及材料参数有效，在此基础上，基于仿真数据和动力学模型进行了灌封后的测试体传递函数的辨识，分析了该传递函数的幅频特性，对不同密度聚氨酯灌封下的存储测试装置结构减振特性给出了定量评估. 

Research on the Damping Characteristics of Polyurethane in the Storage Test Device

In order to study the damping characteristies of Polyurethane, the mechanics parameters of polyurethanes got from SHPB test were used in finite element model (FEM) simulations of hard target penetration. A series air cannon experiments were conduced in the same condition. Correlation calculations were conducted between results from the simulations and the air cannons experiments. Then high correlation coefficients proved the accuracy of simulation model and material parameters. On this basis, the transfer functions were identified based on account of the simulation data and dynamic model for the memory-test-device potted with polyurethane under the specific density. The damping characteristics of the test devices were quantitatively evaluated after the amplitude frequency characteristics analysis of the transfer function.