Prediction of Peak Overpressure of Underwater Cylindrical Charge Based on PSO-CNN-XGBoost

doi:10.12382/bgxb.2023.0743

Abstract

Abstract:

In order to explore the relationships among the peak overpressure of underwater cylindrical charge and the parameters of its structure and blast distance, the sample data of the charge is regarded as two-dimensional data.A peak overpressure fusion prediction algorithm of underwater cylindrical charge is established. The fusion prediction algorithm is based on particle swarm optimization(PSO)algorithm,1D convolutional neural network(1DCNN) and Extreme Gradient Boosting(XGBoost). Correlation analysis and data visualization methods are used to analyze the correlation among charge structure parameters, blast distance and peak overpressure. 1DCNN deep network is designed to mine the longitudinal temporal relationship among the parameters, including aspect ratio, blast distance, etc., and peak overpressure. XGBoost algorithm is applied to find the lateral nonlinear relationships among charge structure parameters, blast distance and peak overpressure, so as to improve the prediction accuracy of small sample data. PSO algorithm is used to optimize the hyperparameters of 1DCNN and XGBoost, and gain the optimal algorithm structure. In the comparison experiments involving ten intelligent algorithms, the accuracy, stability and fitting degree of PSO-CNN-XGBoost underwater cylindrical charge peak overpressure prediction algorithm are higher than those of other algorithms.

Key words: underwater cylindrical charge, aspect ratio, blast distance, peak overpressure, particle swarm optimization algorithm, 1D convolutional neural network, extreme gradient boosting

CLC Number:

O383⁺.1

LIU Fang, LI Shiwei, LU Xi, GUO Ce’an. Prediction of Peak Overpressure of Underwater Cylindrical Charge Based on PSO-CNN-XGBoost[J]. Acta Armamentarii, 2024, 45(5): 1602-1612.

Figures/Tables 20

References 22

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参数	数值
ρ₀/(g·cm^-3)	1.55
Q/(m·s^-1)	6930
p_C-J/GPa	21
A/GPa	373.77
B/GPa	3.747
R₁	4.15
R₂	0.9
ω	0.35
E	0.07

参数	数值
ρ₀/(g·cm^-3)	1.55
Q/(m·s^-1)	6930
p_C-J/GPa	21
A/GPa	373.77
B/GPa	3.747
R₁	4.15
R₂	0.9
ω	0.35
E	0.07

序号	长径比	长度/ mm	直径/ mm	爆距/ mm	爆径比	峰值超压/ MPa
1	0.5	12.7	25.4	30	11.8	29.15
2	0.5	12.7	25.4	40	15.7	19.81
	︙	︙	︙	︙	︙	︙
28	1	20.2	20.2	50	24.8	21.35
29	1	20.2	20.2	60	29.8	16.73
30	1	20.2	20.2	70	34.7	13.60
	︙	︙	︙	︙	︙	︙
219	10	93.6	9.4	120	128.2	17.66
220	10	93.6	9.4	130	138.9	16.17

序号	长径比	长度/ mm	直径/ mm	爆距/ mm	爆径比	峰值超压/ MPa
1	0.5	12.7	25.4	30	11.8	29.15
2	0.5	12.7	25.4	40	15.7	19.81
	︙	︙	︙	︙	︙	︙
28	1	20.2	20.2	50	24.8	21.35
29	1	20.2	20.2	60	29.8	16.73
30	1	20.2	20.2	70	34.7	13.60
	︙	︙	︙	︙	︙	︙
219	10	93.6	9.4	120	128.2	17.66
220	10	93.6	9.4	130	138.9	16.17

爆距/ cm	仿真/ MPa	经验公式^[9]/ MPa	实弹实验^[11]/ MPa	误差1/ %	误差2/ %
50	21.35	19.71	19.97	8.3	6.9
60	16.73	15.71	16.45	6.5	1.7
70	13.60	12.59	13.95	8.0	2.5