bluuebunny/crossref_metadata_2025_split huggingface dataset:
Numerical simulation of human body injury mechanism under multi-angle shock wave
Authors: Geng Jing , Gu Yin , Wu Jialin , Yuan Mengqi 
Published: June 2023

Abstract
To study the human body injuries caused by blast waves, finite element models of the human chest composed of muscles, bones, and organs based on CT flat maps of adult males, are established in this study. Then a shock wave damage model which consists of explosives, air domain, and a human body is built to simulate the damage of 200 g TNT on human models at different distances (110, 160, and 200 cm). The maximum chest wall velocity is used as the injury criterion to study the damage to humans from different angles (0°, 45°, 75°, 90°) at the same distance. The results indicate that the damage to the human body caused by shock waves is associated with distance and angle. The worst injury occurs when the impact direction is normal to the human, while the lightest injury happens when the impact angle is 45 degrees, a 15 percent decrease from the worst. The response of each organ part is related to its mechanical properties, structure, and location. The results could provide a reference to the development of individual protection from shock waves.
Equalization technology of special vehicle power battery pack
Authors: Qiang He , Na Feng , Qingwei Dong , Duo Dai , JianYin Yuan 
Published: June 2023

Abstract
In special vehicles, single cells or battery packs often provide energy for the vehicle after being connected in series and parallel. However, due to the influence of the single battery production process and the use environment, inconsistencies may occur in the battery pack, resulting in a decline in the performance of the battery pack. Therefore, the battery balance management system has increasingly become an indispensable module in the battery management system. It can perform real-time balanced management of the battery pack according to the battery pack status information, thereby avoiding the expansion of inconsistency, improving the capacity utilization rate of the battery pack, slowing down the aging speed of the battery pack, and increasing the driving mileage of the vehicle. To sort out and summarize the current development of battery pack balancing system, based on a large number of references, this paper studies and analyzes the mechanism of inconsistency, the commonly used equalization topology and control strategy of lithium power battery pack. And finally, the development trend of battery pack equalization technology for special vehicles is prospected.
Edge detection ghost imaging using frequency-domain filtering
Authors: Zheng Bowen , Ji Pengcheng , Shi Yangyang , Yu Yuanjin 
Published: June 2023

Abstract
Ghost imaging is a novel imaging method, which enables imaging under harsh environments or quickly extracting image information. The advantage of Ghost imaging in edge detection is that it can directly obtain the edge information of an unknown target. We propose an edge detection method based on two dimensional (2D) discrete cosine transform (DCT) - frequency domain filtering ghost imaging (FDFGI). This method combines the frequency-domain filtering and anisotropic gradient operator to extract the edge information of the unknown object under the under-sampling rate. Compared with traditional methods, this method has a higher signal-to-noise ratio of image edge information extracted under Gaussian noise. It can even achieve edge information extraction under an extremely low sampling rate of about 1.12%.
Fire Control Arithmetic on MRSI of Electromagnetic Guns
Authors: Wang Yue , Wang Jun , Zhang Xianchun 
Published: June 2023

Abstract
In order to improve the firing density and damage efficiency of the electromagnetic gun, the control algorithm of multiple rounds simultaneous impact(MRSI) of the electromagnetic gun was established by controlling the initial velocity of projectile and the time interval of the projectile launch. Under the premise that the electromagnetic gun can effectively improve the strike density and damage efficiency, the allowable distance error and the allowable flight time error are set, the fourth-order Runge Kutta method is used to calculate the outer ballistic. According to Pareto genetic algorithm, the objective function, namely two allowable errors, is optimized to obtain the optimal solution of muzzle velocity and angle of multiple projectiles. The simulation verifies that the electromagnetic gun can achieve multiple rounds simultaneous impact in different ranges, and verifies the feasibility of the algorithm to achieve multiple rounds simultaneous impact, which is of great significance to improve the damage efficiency and fire density of the electromagnetic gun in the future.
Study on Optimization Design of Electromagnetic Loading liner
Authors: Dou J H , Lei J Y , Xue B , Jing Y D 
Published: June 2023

Abstract
Electromagnetic loading liner is a new way to obtain a jet, which utilizes the Lorentz force to collapse the liner. To form effective jet, the jet critical forming model of electromagnetic loading is established based on the traditional jet critical forming conditions and electromagnetic loading characteristics. Through dimensional analysis, control variable method and theoretical calculation, the upper and lower critical peak current distributions are obtained. Finally, the loading current of 1mm thick liner structure is optimized by the critical peak current distribution diagram. The jet forming of the liner under the optimized current loading is calculated through theoretical simulation. The whole liner forms a jet, and the jet velocity, kinetic energy and liner utilization are much improved, which verifies the reliability of the critical current distribution diagram.
Effect of Electrostatic Discharge (ESD) on Heat Response Performance of NiCr Micro-heater
Authors: Liu W , Zh Xie R , Wang X Y 
Published: June 2023

Abstract
The NiCr micro-heater is a key element of MEMS-based electro-explosive device (mEED), while electrostatic discharge (ESD) may excite the micro-heater accidentally. To discover mechanism that how the ESD excitations effect on heat response performance of NiCr micro-heater, electro-thermal conversion process was numerically modelled by using commercial software. Three different shapes of micro-heaters, including rectangular, V-shape and square ones, are designed, and a series of simulation models are built under ESD events of 25kV, 5000Ω, 500pF and 25kV, 500Ω, 150pF. Heat response performance of NiCr micro-heater with different shapes and sizes were numerically computed under the said ESD events and compared with. The critical safety value at which LTNR and copper azide would not be ignited accidentally were calculated according to the fitted formulas. Conclusions are that maximum temperature decreases exponentially with increase of width of rectangular micro-heater, decreases exponentially with increase of wm and α of V-shape micro-heater, and decreases exponentially with increase of length or width of square micro-heater. The ESD event of 25kV, 500Ω, 150pF is a more severe case for micro-heater than ESD event of 25kV, 5000Ω, 500pF. These results could supply critical data to guide the design of MEMS -based EED for ESD protection.
Electromagnetic modeling and multi-field coupling simulation for conductive rubber embedded in shells
Authors: Yao X , Liu X S , Li Z X , Zhu J M , Wang X G 
Published: June 2023

Abstract
Our living environment and the battlefield witness an increase in electromagnetic energy density due to the emergence of electronic electrical equipment, such as automobiles, communication devices, computers. To adapt to the environment and improve the electromagnetic compatibility of equipment, conductive rubber is increasingly being used in electrical equipment. However, due to the lack of simulation parameters and incomplete simulation methods, the current electromagnetic simulation of conductive rubber cannot meet the needs of supporting engineering applications. This paper presents the test results for the electromagnetic characteristics of a conductive rubber material, develops a simulation model of the material based on test data, and verifies the model through experiments in the real working environment. Results show that the simulation model is valid.
Multi-scale simulation methods of mechanical properties of organic ballistic fibers and their composites: a review
Authors: Jingli Xu , Shuhu Li , Haiyan Zang , Jianqin Zhang , Haiyun Zhang , Huazhen Wei , Danyong Wang , Yiwei Chen 
Published: June 2023

Abstract
The mechanical response behavior and multi-scale simulation methods of organic ballistic fibers were summarized in this paper, including aramid fibers, ultra-high molecular weight polyethylene fibers, and their composites. Simulation methods are summarized, and the current common problems of multi-scale simulation methods are analyzed in the article. The author is convinced that the application of multi-scale simulation methods of organic fibers with core-skin structure can effectively predict the macroscopic mechanical properties of composite materials and explain the mechanism and mechanical behavior evolution.
Dynamic analysis of bullet in-bore motion coupled with barrel temperature field
Authors: Huang C L , Chen L , Xu H , Li Z X , Wu Z L 
Published: June 2023

Abstract
In this paper, a multi-physics field coupled finite element model for the motion of projectile in a hot barrel is proposed and validated by muzzle velocity test and barrel temperature test. The model includes heat transfer analysis, explicit dynamic analysis and investigates the in-bore motion of the projectile under different barrel temperature conditions. It is pointed out that, with the increase of barrel temperature, the radial displacement of the projectile centroid increases, the consistency of the radial velocity of the projectile centroid becomes worse, and the swing angle increases significantly. This work can contribute to further studies on anomalous dispersion mechanism and improvement of firing accuracy.
Study on prediction technology of mechanical properties of aramid fiber based on molecular scale
Authors: Gaoyingying  , Daiyong  
Published: June 2023

Abstract
aramid fiber is an organic fiber developed in the mid-s. it is the second generation of high-performance composite reinforcement after carbon fiber. Molecular simulation has unparalleled advantages in scientific research. It can simulate experimental conditions that cannot be achieved in reality. Molecular simulation can be used to control various internal and external conditions of the system, so as to investigate the influence of interested factors on various statistical properties of the model system. In this paper, the PPTA Fiber unit cell model or supercell model constructed according to the actual situation is used to calculate the mechanical property parameters of PPTA Fiber. The main mechanical property parameters calculated include stiffness matrix, flexibility matrix, bulk modulus, shear modulus, Young’s modulus and sound velocity, Lame constant and stress-strain curve in uniaxial tension or compression.
Real-time Signal Processing of UWB Fuze Based On 1D-CNN Model
Authors: Luo Yao , Hou Jun , Shi Xiaoshan , Hao Shijun , Huang Zhonghua 
Published: June 2023

Abstract
The main source of the burst-height error of UWB fuze is the random error related to the fuze signal processing method. Therefore, the use of reliable algorithms to reduce the error as much as possible to avoid bursting early and misfire is very important to improve the burst-height precision of fuze. In this paper, taking the output of the fuze sampling and integrating circuit as the research object, a real-time signal processing method based on the 1D-CNN model is proposed. Simulation results show that the target recognition rate of the 1D-CNN algorithm is as high as 100%, with no bursting early or misfires, and the mean absolute time error is as low as 0.0202s. The burst-height error is effectively reduced.
Massively parallel numerical simulation of 3D shock wave propagation based on JASMIN framework
Authors: Liu N , Zhang P , Li K , Yu Y Q 
Published: June 2023

Abstract
An efficient massively parallel computing program for shock wave propagation named Shock3d is developed for shock wave damage mechanism in complex scenes. With the finite volume method, the program is built upon JASMIN (J parallel Adaptive Structured Mesh applications INfrastructure) and employs a component-based hierarchical organization structure. Using the patch-based core algorithm, Shock3d enables high parallel efficiency and strong parallel scalability with a parallel domain decomposition method and an image domain-based communication mode. It not only considers gravity, real gas effects, and boundaries in complex scenes, but also supports dynamic load balancing (DLB) and three-dimensional structured meshes and allows the parallel solution of hundreds of millions of mesh problems. Typical examples were used to verify the validity, parallelism, and high-resolution simulation results of the program developed. In the scalability test, where the propagation of shock waves through hundreds of millions of mesh elements was simulated on 300,000 CPU cores, the program delivered parallel efficiency of 60.84%.
Design of Hardware-in-the-loop Simulation System for Image-guided Missiles
Authors: Zhang Duo , Liu Manguo , Dong Guocai , Cheng Simin 
Published: June 2023

Abstract
This paper introduces a design method of a hardware-in-the-loop simulation system applied to a certain type of image-guided missile. By studying the characteristics of a certain type of image-guided missile, the working principle of the image-guidance system is analyzed, the mathematical simulation scheme and the hardware-in-the-loop simulation scheme are designed, and the working mechanism of RTX is analyzed. Established a real-time hardware-in-the-loop simulation system based on RTX+Windows, analyzed the delay of the simulation computer, the simulated launch control computer, the flight motion simulator and the image simulator, and finally integrated the flight data and missed target amount of the hardware-in-the-loop simulation test, and obtained the hardware-in-the-loop simulation system meets the requirements.
Preparation and laser response of graphene oxide complexes for typical polynitramine energetic materials
Authors: Lu Feipeng , Han Ruishan , He Aifeng , Wang Yanlan , Zhang Fang , Li Shaoqun 
Published: June 2023

Abstract
The conflict between polynitramine energetic materials’ high energy density and its safety has been a challenge in its safe and efficient application. GO has been demonstrated to be promising materials for the regulation of energetic materials’ performance with various advanced preparation methods. However, the thermal-based performance of GO-based polynitramine energetic composites haven’t been deeply investigated. In this work, the GO@RDX and GO@CL-20 composites were obtained with the simple solvent evaporation method. GO-based polynitramine energetic composites’ structure was identified with SEM, PXRD, IR, and XPS, its thermal based performance was investigated with DSC, activation energy, and laser initiation system. This work could provide basis for the design of novel energetic composites with excellent comprehensive performance.
Experimental study on internal explosion of thermobaric explosives containing metastable intermolecular composite (MIC) materials
Authors: Yuanyuan Li , Yulei Niu , kun Li , Hai Nan 
Published: June 2023

Abstract
In order to study the influence of metastable intermolecular composite (MIC) materials on the internal implosion properties of thermobaric explosive, the calorimetric bomb and closed chamber were used to measure the detonation heat, quasi-static pressure and energy impulse of five explosive formulations containing different MIC materials. Compared with the traditional aluminized warm compressed explosives, the energy release characteristics and output characteristics were analyzed. The results show that the explosive formula containing MIC material has lower detonation heat value in air and vacuum than that containing traditional Al powder; The quasi-static pressure and energy impulse of the former are higher than those of the latter, indicating that MIC materials can improve the output energy of thermobaric explosives. The results can be used to guide the formulation design of thermobaric explosives.
Study on Mechanical Properties and Penetration Stability of DNAN Based Explosives Under Additive Effects
Authors: Jiang T , Feng C L , Wan L L , Miao F C , Zhou L , Zhu Y Z , Kang H , Wu X X 
Published: June 2023

Abstract
A series of mechanical experiments and penetration tests, for investigating the effects of additives, on DNAN-based explosives were carried out. At various strain rates, the data result that the stress-strain curves range 10−5s−1-102s−1, were obtained in mechanical experiments by the application of quasi-static and dynamic apparatus. Utilizing the visco-elastic Maxwell model which is calibrated with the experiment data,the dynamic behavior of the explosives could be simulated in penetration process. The results show that the peak stress and displacement of the explosive with binder 1# is smaller than those of the explosive with plasticizer 2# at the same positions. It indicates that the explosive with binder 1# undertake a less severe stress condition than the other, and the explosive with binder 1# may perform more stable. The conclusion of penetration tests which show that both of the additives stabilize the explosive are more effective, coincides with the simulation results.
Numerical simulation research on fragments formation of cylindrical cased charge based on SPH method
Authors: Li X L , Chen H X , Kou J F , Song Y D , Hu C , Huang H J , Gao D Y 
Published: June 2023

Abstract
In order to obtain the fracture and fragmentation of a cased charge under blast loading, the JWL equation of state of HMX-based PBX was fitted based on a cylinder test firstly, then the smooth particle hydrodynamics (SPH) method was used to perform a simulation of cased charge under interior blast loading, in the meantime, an blast test of cased charge was conducted. The results show that the parameters of JWL equation of state and the simulation method were reasonably. The simulated fragments velocities and calculated results from empirical formula agreed well with each other, the maximum error did not exceed 9.5%. Under the direct loading of the detonation wave, the fragments velocities increased to more than 1000m/s immediately within 5us, and then the fragments were continuously accelerated by detonation products and shock wave until the fragments reached the maximum velocities in the later 250us. Eventually, the shape of expansion contour of the casing tended to be ellipsoid. The method and results can provide references for the power design of the fragment warhead, as well as the protection design against the fragments.
Predictive combining multiple variously hybridized low-dimensional nanocarbons in a single additive for nano-sized energetic materials performance enhancement
Authors: Lukin Alexander 
Published: June 2023

Abstract
We propose to uncover new opportunities for predictive nano-sized energetic materials performance enhancement through manipulating by vibrational interactions, energy exchange as well as heat transfer enhancement within the reaction zones at nanoscale. The combination of multiple carbon nanostructured materials with various hybridizations within a single substance can uncover new unique properties. Due to a recent fundamental discovery the collective atomic vibrations, called phonon waves, manifested in transition domains of multilayer nanostructures, incorporation of self-organized arrays of metastable nanostructures are capable controlling vibrational interactions and energy exchange within the reaction zones at nanoscale. For using this phenomenon, we propose predictive incorporation into the nano-sized energetic material composition of various carbon-based allotropes, used as catalytic nano-additives, combined with assembling them by the self-organized arrays of differently hybridized low-dimensional nanocarbon promoters. For predictive combining of multiple differently hybridized nanocarbons within a single substance we propose to use the energy-driven initiation of the allotropic phase transformations in nanocarbon promoters by concurrent electron and ion irradiation. For fine tuning the collective atomic vibrations, nanoarchitecture and functionality of the mentioned arrays of differently hybridized nanocarbon promoters we propose using combination of a set of techniques: concurrent electron and ion irradiation, using the surface acoustic waves combined with heteroatom doping along with application external electromagnetic fields and using the data-driven nanoscale manufacturing approach.
Design Method and Performance Study of Insensitive Bridge Wire
Authors: Chang Y K , Xu X , Zhao W J , Sun J , Zhang T , Li L , Wu R D 
Published: June 2023

Abstract
An insensitive “fishbone” bridge wire was designed by dividing the bridge wire into a heat collection zone and a heat dissipation zone, leading to the improved safety and reliability of initiating explosive devices. The surface temperature of the bridge wire was investigated by using finite element simulation. The performance of insensitive initiating explosive devices composed of bridge wire was analyzed by using resistance and ignition performance tests. The results show that the designed collector area of the bridge wire is the highest surface temperature during operation, initiating explosive devices consisting of insensitive “fishbone” bridge wires that meet the requirements of insensitivity.
Research on Integrated Parallel Reactions for the High Throughput Preparation Energetic Materials
Authors: Wang Qiuxiao , Tao Wang , Yifei Zhou , Gao Haixiang 
Published: June 2023

Abstract
The high-throughput automatic sample addition platform technology was applied to the large-scale sample addition, pretreatment, and high-throughput synthesis of simple compounds in many fields. With the introduction of material genome technology into the field of high energy energetic materials (HEDMs), the energetic materials genome (EMG) project is implemented. Completing different reaction types at the same time has become key to high-throughput synthesis of energetic materials. In this study, three common synthetic methods (nitration, oxidation and ion exchange reactions) were selected and successfully integrated on the high-throughput automatic sample addition platform. The parallel reactions could be used for preparing energetic materials. The method is viable for high-throughput synthesis of HEDMs. The method improves the efficiency, safety, labor costs compared to conventional methods, which is of great significance for accelerating the synthesis of HEDMs.
Study on the curing process and thermal performance of an RDX-based UV-cured combustible ordnance material
Authors: Li Manman , Hu Rui , Lu Honglin , Gao Yuchen , Wang Qionglin , Yang Weitao 
Published: June 2023

Abstract
RDX-based combustible ordnance material was prepared using a 3D printer, and the curing process of the UV-curing resin (acrylic resin) was tracked by infrared spectroscopy. The thermal decomposition characteristics of photocurable combustible materials were studied by DSC, and the non-isothermal method was used to study Kinetic parameters. Meanwhile, the delayed ignition time of UV-cured combustible materials at different temperatures were tested using a muffle furnace. Infrared spectroscopy test results show that the C=C bond conversion rate can reach to 81.7% when the acrylate resin is irradiated for 2 s. DSC test results show that the thermal decomposition peak temperature of the UV-curing combustible ordnance material is 235.9°C (at heating rate of 10°C/min), and the activation energy of the reaction is 129.93 kJ/mol. The critical explosion temperature and spontaneous temperature were 466.85K and 469.31K, respectively.