Chongqing Hongyu Precision Industry Co.

Chongqing, China

Chongqing Hongyu Precision Industry Co.

Chongqing, China

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Yin J.-P.,North University of China | Liu T.-X.,North University of China | Zhang H.-C.,Chongqing Hongyu Precision Industry Co. | Jian Q.-F.,Institute of Space Power Source | You M.,The Second Artillery Military Resesentative Room
Hanneng Cailiao/Chinese Journal of Energetic Materials | Year: 2014

In order to study the influence of V-shaped cavity degree (θ), length (L) and depth (H) on the damage efficiency of half-premade fragmented Penetrator with Enhanced Lateral Efficiency (HF-PELE), numerical simulations of HF-PELE penetrating 4340 steel were carried out by ANSYS/LS-DYNA. Based on the influence of V-shaped cavity degree on damage efficiency of HF-PELE, the optimized structure parameters were acquired by orthogonal test with θ, L and H as variables and maximum radial velocity (vr,max) as the objective function: θ=40°, L=8 mm, H=3.5 mm and vr,max=161.82 m·s-1. Results indicate that the V-shaped cavity depth makes a big difference on the damage efficiency of PELE, the V-shaped cavity degree follows behind, and the V-shaped cavity length's is minimum.


Sun B.-P.,Beijing Institute of Technology | Duan Z.-P.,Beijing Institute of Technology | Wan J.-L.,Chongqing Hongyu Precision Industry Co. | Liu Y.,Beijing Institute of Technology | And 2 more authors.
Baozha Yu Chongji/Explosion and Shock Waves | Year: 2015

Aimed to the safety of an explosive charge in a projectile during penetration, the visco-statistical crack mechanics (Visco-SCRAM) model was applied to numerically calculate the bulk heat of the explosive charge, the heat produced by the friction between explosive charge cracks, and the heat induced by the friction between the explosive charge and the projectile inner wall. The contribution of the above three mechanisms to the temperature rise of the explosive charge were analyzed, the ignition mechanism of the explosive charge was discussed, and the critical initial penetration velocity of the projectile was obtained corresponding to the ignition of the explosive charge. The investigated results show as follows: (1) the heat induced by the friction between the explosive charge and the projectile inner wall has a certain contribution to the temperature rise of the explosive charge, and this contribution gradually increases as the initial penetration velocity of the projectile increases; (2) the bulk temperature rise produced by the viscosity, damage and adiabatic volume change plays a weak role in the ignition of the explosive charge; (3) the hot spot formation by the friction between the explosive charge cracks is the physical mechanism for the ignition of the explosive charge; (4) the Visco-SCRAM model can be used to predict the ignition responses of explosive charges to low strength and long pulse loads. ©, 2015, Explosion and Shock Waves. All right reserved.


Liang Z.-Y.,North University of China | Ding F.-C.,North University of China | Chen Z.-G.,North University of China | Gao W.,Chongqing Hongyu Precision Industry Co.
Binggong Xuebao/Acta Armamentarii | Year: 2014

The fragments of focusing rod warhead's are the rods. The different parameters of the rods have some effects on the damage efficiency of warhead. Focusing rod warhead is simulated by finite element software ANSYS/LSDYNA, and the influences of the number and dislocation arrangement of rods on lethal blast radius formed during explosion are analyzed. The simulation results show that the warhead with 12 rods in single-layer arrangement has the better damage efficiency, and the rods dislocatedly arranged at 5°can form a continuous lethal radius with a certain width when the maximum diameter of warhead is 11 cm. ©, 2014, China Ordnance Society. All right reserved.


Liang Z.-Y.,North University of China | Chen Z.-G.,North University of China | Gao W.,Chongqing Hongyu Precision Industry Co. | Song H.-J.,North University of China
Binggong Xuebao/Acta Armamentarii | Year: 2013

In order to the charge stability of different charge structures during penetration, the non-linear finite element software LS-DYNA is used to analyze the equivalent stresses which the integrally packaged explosive and the charge structures packaged in several units are subjected to during the process of the warhead penetrating into concrete target at 1 000 m/s. The maximum stress-time curve of charge structure during penetration is obtained. Based on the critical energy criterion, the stability of charge can be predicated by analyzing the maximum stress point of charge. The results show that the stress environment of charge is improved, and the impact stress and overload are reduced when the explosive is packaged in several units using low acoustic impedance material. The method can be used to keep charge stability during the process of the warhead penetrating into hard target.


Chen J.,Chongqing Hongyu Precision Industry Co. | Wang Z.-Y.,Chongqing Hongyu Precision Industry Co.
Binggong Xuebao/Acta Armamentarii | Year: 2012

Two time series models are proposed by analyzing the course of actions of an insensitive tandem bomblet. Calculation of time series is carried out based on the models, calculation results and test results are compared. Theory calculation and test results prove that the tandem bomblet can act according to the scheduled time series, the models have reference value to the design of other tandem bomblets.


Wang S.-H.,Chongqing Hongyu Precision Industry Co. | Hu X.-D.,Chongqing Hongyu Precision Industry Co.
Binggong Xuebao/Acta Armamentarii | Year: 2012

The military demand and the basic concept of the insensitive munitions were briefly described, and also the current development status of insensitive munitions is summarized. Based on the analysis of overseas typical insensitive munitions design and hazardous environment factors, a main technology approach to improved insensitive performance of munitions was presented, the applied research cases were given, and the assumption and recommendation on developing the insensitive munitions were offered.

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