改性双基推进剂机械感度的预测方法OA北大核心CSTPCD

To predict the mechanical sensitivity of modified double base propellants,the critical impact energy E and the criti-cal friction load Fs were obtained by using the BAM impact device and friction sensitivity meter.Based on the correlation be-tween the oxygen balance index of the single-compound explosive and the impact sensitivity,the relationship between the oxy-gen balance index and the mechanical sensitivity of modified double base propellants was investigated.The oxygen balance in-dex,N—NO2,O—NO2,—COOR and benzene ring were selected as the molecular structure descriptors,and perform multi-ple linear regression to establish a mechanical sensitivity prediction model and calculate the E and Fs of modified double base propellants.The randomly selected test samples were examined to test the model.The results show that the oxygen balance in-dex OB100 exhibits a good linear relationship with both E and Fs,which can be used to judge the mechanical sensitivity of the modified double base propellants.The E and Fs prediction models based on molecular structure descriptors have high correla-tion coefficients of 0.963 and 0.983,respectively;Meanwhile,the root mean square error(RMSE)versus the mean absolute percent error(MAPE)of their test samples are 0.40J and 10.27％versus 8.33N and 10.83％,respectively.