bluuebunny/crossref_metadata_2025_split huggingface dataset:
The establishment of a three-dimensional simulation model of the Queen of Song Dynasty “HUIYI”
Authors: yuqing Yang , yue Li , xiaogang Wang 
Published: July 2021

Abstract
In the application and development process of 3D simulation technology, it is found that the research on traditional Chinese clothing models is still relatively lacking. In order to realize the establishment of the digital virtual model of Chinese traditional costumes, this article takes the Song Dynasty queen “Huiyi” as the research object, and derives the production methods and materials of the Song Dynasty queen “Huiyi” through the analysis of known documents and image data. Using virtual simulation modeling technology, establish a three-dimensional model of virtual clothing display, so that traditional clothing can be quickly and accurately restored. Establish a three-dimensional virtual simulation model on the basis of in-depth research on plane plate making, patterns, materials, to further expand the research on the digital technology of traditional Chinese clothing, and to lay the foundation for three-dimensional simulation. It provides a new direction and method for the inheritance of Chinese traditional costumes.
The conception and exploration of the underwater vehicle simulator
Authors: Shao-feng Gong , Jian-bin Zhang , Dong Cheng , Hai-Yan Xiao , Ping Dong , Zhan-sheng WU 
Published: July 2021

Abstract
In this paper, a new type of underwater vehicle simulator is proposed. The underwater vehicle simulator adopts capsule prefabrication structure and can be carried on UUV Each UUV can be loaded with multiple underwater vehicle simulator capsules. After sailing to the predetermined location, long-distance delivery is carried out. After the underwater vehicle simulator is fully charged and expanded, the underwater vehicle simulator cluster is formed to achieve tactical purposes such as confusing and inducing enemies in quantity, orientation and deployment. The technology can be applied to the new generation of underwater vehicle safety defense system, and can be popularized and applied to other weapon systems. It has great military, political and national defense significance and has broad application prospects.
Design and simulation of key mechanism for transverse sealing of fresh food packaging machine
Authors: Zheng Zhaoqi , Shi Bingjian , Mei Wenjuan , Liu Chaoran , An Zimin , Shi Pu , Wang Ruifang 
Published: July 2021

Abstract
In order to improve the freshness and safety of fresh food, packaging is necessary for the processing industry of agricultural products. At present, the packaging of fresh food in China is mainly manual packaging, which has high labor intensity and low production efficiency. In response to this situation, this study focused on the transverse sealing device of the fresh food packaging machine. The device completed the transverse sealing operation through the cooperation of two main mechanisms, including an up wind box and an anthropomorphic hand folding mechanism. The anthropomorphic hand folding mechanism was composed of roller, cylinder and lower wind box. This paper makes a study of design and simulation of key mechanism for transverse sealing of fresh food packaging machine, improving the completion of the transverse sealing of the packaging machine. The experiment showed that the designed structure basically satisfied the functional requirements of the fresh food packaging machine for the sealing operation of the transverse sealing device. And the optimal parameter of the air outlet of the up wind box was 640 mm2, the lower wind box of anthropomorphic hand folding mechanism was 19 air outlets with a diameter of 2 mm.
Silulation on Parallel Control Mthods of Isoland Microgrid Powered bylnverter and Diesel Generator
Authors: Xiaolin Zhang , Fan Ma , Chun Li 
Published: July 2021

Abstract
Aiming at the power quality problems caused by the large number of renewable energy access to the grid, three common parallel networking modes of inverters and diesel generators in the independent micro-grid were analyzed in this paper, this paper also makes a systematic and comprehensive comparsion from the control principle, control structure, control performance, overall resource occupation, deduced the equivalent conditions of droop control and virtual synchronous generator control. Secondly, the characteristic of different control methods was analyzed to test the stability and also point out the characteristic of voltage and current in this paper. Finally, the micro-grid model was builted on PSCAD/EMTDC platform to verify the performance of three methods from the conditions of parallel off grid switching, load mutation and three-phase short circuit fault, and also point out the application scope of different strategies, it has reference value for micro-grid engineering practice.
Design of Real-time Monitoring System for Liquid Flow Standard Device Based on Internet of Things
Authors: Jiamin Lu , Ping Wang 
Published: July 2021

Abstract
In order to improve the level of information and artificial intelligence of liquid flow standard devices, a real-time monitoring information exchange platform system of Internet of Things for standard devices is built in this paper. By introducing artificial bee colony algorithm to optimize BP neural network algorithm, the data of the Internet of Things system can be analyzed and provided to users, so as to improve the artificial intelligence level of the whole set of standard devices. Simulation and experiment show that the system for liquid flow standard device proposed in this paper works stably and reliably, and all the indicators meet the testing requirements of standard devices.
Design of Data Acquisition System in Tobacco Industry Based on Industrial Internet of Things
Authors: Lin Jingju , Liao Junhui , Zhang Zhibin , Lin Hui , Zhang JianWei 
Published: July 2021

Abstract
This article adopts the Internet of Things technology, network communication technology, edge computing and other technologies to establish a set of data acquisition system based on the industrial Internet through the data collection, storage and reporting of the automatic control systems of the three workshops of silk making, wrapping, and power and other related information systems.
Research on Obstacle Avoidance of Small Cruise Vehicle Based on Improved Artificial Potential Field Method
Authors: Xiaojie Liu , Yinke Dou 
Published: July 2021

Abstract
To enhance the small cruise vehicle in the complex environment under the ice autonomous obstacle avoidance ability, the artificial potential field algorithm was improved in this paper. Firstly, the idea and principle of the traditional artificial potential field obstacle avoidance algorithm as well as its existing defects such as local minimum are analyzed. Then the local minimum defect of the traditional artificial potential field method is solved by optimizing the repulsive potential field function and adjusting the repulsive force component’s direction on the coordinate axis. Then, the improved artificial potential field obstacle avoidance algorithm is simulated by using MATLAB software. The experimental results show that the improved algorithm can make the cruiser safely and accurately sail to the target position without falling into the local minimum value, which proves that the improved artificial potential field obstacle avoidance algorithm can work safely and stably.
Modal analysis of excavator toolbox based on hypermesh
Authors: Wang Mengyao , Dong Mingming , Lu Shen , Hu Yaoguang 
Published: July 2021

Abstract
Excavator is one of the most important construction machineries. Its working environment is complex and changeable. There is no perfect suspension system for excavator as cars, and the covering parts are mostly thin-wall welded parts. Therefore, the covering parts are easy to be damaged in the working process, which brings poor using experience problems to users. According to the user feedback survey, toolboxes are most prone to cracking in the cover. The quality of the toolbox determines the company’s reputation and brand competitiveness in the market to a certain extent. Therefore, it is important to study the vibration response of the toolbox. Aiming at the problem of box body cracking in the road test of a medium-sized excavator toolbox, this paper carried out modal simulation and test verification on the excavator toolbox, laying the foundation for the follow-up research.
Analysis of Subgrade Vibration and Dynamic Stress of Heavy Haul Railway with High Embankment based on ZL-TNTLM Program
Authors: Shujun Yan , Yousheng Deng , Lei Hao , Jian Li , Xueli Zhang 
Published: July 2021

Abstract
Aiming at the high embankment section of heavy-load Railway, a finite element model of dynamic response of subgrade structure under train load is established, and ZL-TNTLM program is used to apply load excitation. The results show that the dynamic stress on the top of the roadbed is a single peak curve under heavy train load, and the peak value of the vertical acceleration vibration changes obviously under heavy train load, and presents a periodic change With the increase of the train speed, the dynamic pressure stress of the track bed and the foundation bed does not increase obviously with the increase of the train speed, but fluctuates and changes slowly; the dynamic stress and the vertical acceleration in the roadbed attenuate non-linearly along the depth direction The attenuation of acceleration is greater than dynamic stress along the direction of subgrade depth. The results are of theoretical and engineering significance for revealing the dynamic stress and vertical acceleration mechanism of heavy-haul railway subgrade under the change of high-speed train speed.
Research on the Ming Dynasty Dao Robe Modeling Method Based on 3D Simulation Technology
Authors: song Ma , yue Li , xiaogang Wang 
Published: July 2021

Abstract
With the rapid development of 3D virtual fitting technology, the study of virtual simulation models of traditional Chinese clothing is of great significance to the establishment of a visual database. In this article, the Ming Dynasty Dao gown is taken as the research object. First, the method of combining historical documents and archeological objects is used to analyze the Dao gown’s clothing culture, plane structure, and modeling characteristics in depth. Use virtual simulation technology to establish a three-dimensional model, and simulate and reproduce the color pattern, fabric material, human body proportion, and replica modeling of the robe. In the research of this thesis, the clothing CAD technology is used to restore the historical pattern and the three-dimensional simulation technology to show the effect of the ready-made clothing, and more concretely reproduce the clothing shape and style characteristics of the Ming Dynasty Taoist robe. The modeling method of 3D simulation technology provides new ideas for the reproduction and reproduction of visualized Chinese historical costumes and the promotion of the digital inheritance of Chinese historical costumes.
Modelling and simulation calculation of fixed-cylinder hydro-pneumatic suspension
Authors: Chen Yijie , Huang Long , Xu Long , Zheng Guanhui , Wang Le 
Published: July 2021

Abstract
According to the structural characteristics of the fixed-cylinder hydro-pneumatic suspension, the force transmission and the construction of the theoretical model were discussed. The non-linear correspondence of the force between the piston and the road wheel was clarified through analytical deduction, and the formula for calculating the stiffness of the suspension was given. The influence factors of suspension leverage ratio and elastic force were simulated and analysed by programming, the conclusions drawn provided ideas for the design of zero stiffness suspension near the equilibrium position.
Improvement of tensioning roll for aluminum foil cutting assembly of ZB48 packaging machine
Authors: Guoqian Ye , Yonglong Yu , Yuming Xu , Guofu Luo 
Published: July 2021

Abstract
In the operation process of ZB48 dual-channel ultra-high speed cigarette packing unit, the fault downtime of aluminum foil cutting assembly is long, which accounts for 77.4% of the total downtime, and the main phenomenon is caused by the falling of aluminum foil. The cam-like appearance of the aluminum foil paper tightening roll is designed to ensure that the total length of the periphery is equal to that of a piece of aluminum foil paper, and the power transmission mode is optimized to eliminate the phenomenon of falling off the torn pieces of aluminum paper. The results show that the aluminum foil cutting component based on the new improved tensioning roller meets the requirements of the continuous and stable operation of the ultra-high speed packaging unit. Through six months of tracking analysis, the average daily shutdown time of the aluminum foil components is reduced to 5.6 minutes, which reaches the predetermined target.
Finite Element Analysis of Glass Fiber Winding Molding of HDPE Pressure Vessel
Authors: Zeng Wenlei , Hu Wenhua , Liu Huan , Tian Haobin 
Published: July 2021

Abstract
Type IV low-pressure vessel formed by non-geometric winding of glass fiber composite materials are taken as the object. The number of winding layers, winding line type and thickness of the winding layer of the vessel are designed by the method of CADWIND numerical simulation. Finally, with finite element software for stress and strain analysis. The middle part of the pressure vessel is wound in a combination of hoop winding and spiral winding, and finite element modeling is carried out using CADWIND winding professional simulation software. According to the trajectory of non-geometric winding forming, the optimal winding parameters of the composite pressure vessel are determined; the design parameters such as fiber winding thickness, winding angle and number of winding layers are determined. The finite element model of the pressure vessel was established and exported on the basis of CADWIND simulation software, and the finite element simulation software was used to verify and analyze the thickness of the winding layer. The results show that when the internal pressure of 1.5MPa is applied, although the head is easily damaged, it is not enough to make the pressure vessel invalid. The research in this paper can provide reference for the design and use of glass fiber composite material low pressure vessel.
Analysis of the influence of oscillator stiffness parameters on vibration transmission characteristics of Drude model acoustic metamaterial with series double harmonic oscillators
Authors: Huijie Shi , Ming Gao , Enxin Hu , Dongfu Yan , Zhiyuan Zhang , Lin Du 
Published: July 2021

Abstract
For a kind of acoustic metamaterial with special microstructure and attenuation band gap, the vibration transmission characteristics of five period Drude system with series double harmonic oscillators are analysis to uncover the widening band gap method. The harmonic oscillator stiffness parameters are changed to expand the range of band gap width. The increase of parameter k
1 will widen the high frequency band gap width, and the increase of k
2 will widen the low frequency band gap width. In band gap region, under the steady state, the first harmonic oscillator in five period motion direction will change from consistent to inconsistent as the parameter k
1 change. The conclusion in pass band region is similar. The research provides technical approach for promoting the development of vibration and noise control in engineering.
Structural characteristics and strength analysis of main hull of cylindrical FPSO
Authors: Yun Xie 
Published: July 2021

Abstract
In this paper, a cylindrical FPSO is analyzed. Firstly, the structural characteristics and structural layout principles are introduced. The overall structural model of the main hull of the cylindrical FPSO is established by using the three-dimensional finite element design software. According to the actual situation in the operation process, the boundary conditions and load cases are determined. Finally, the yield strength of the main hull is checked. This paper has a certain guiding significance for the design of cylindrical FPSO.
Application of genetic algorithm to optimize the impact resistance of composite laminates
Authors: Yang Runze , Wu Zhirong , Fang Lei 
Published: July 2021

Abstract
The impact resistance of composite fan hood is of great significance to improve the safety of engine. Taking the fiber reinforced resin matrix composite laminate for Aeroengine fan case as the research object, the maximum loss kinetic energy of impact body as the objective function, and the fiber ply angle as the design variable, the impact resistance of the fiber reinforced composite laminate was optimized. ABAQUS finite element software is used to simulate the high velocity impact of composite laminates, and genetic algorithm is used to optimize the design, and the optimal stacking method is obtained. Through the optimization design, the impact resistance of fiber reinforced composite laminates has been greatly improved.
Corrosion failure analysis and microstructure characterization of emulsion on hydraulic cylinder base
Authors: Zhiwei Zhang , Fan Wang , Sufen Liu , Hongwei Zhou , Wenyuan Geng , Zhaojie Li 
Published: July 2021

Abstract
This paper studies the corrosion of the base of the 30CrMnSi hydraulic cylinder due to changes in emulsion concentration during maintenance and its effect on alloy performance. The results show that the corrosion characteristics of the base of the hydraulic cylinder are comprehensive corrosion and local point corrosion, and that the anti-rust performance of emulsion in contact with the outer surface of the hydraulic cylinder base is insufficient, and the chemical reaction with its surface is the main cause of the corrosion of the components. According to the analysis, the hydraulic cylinder base can not be stored at a reasonable emulsion concentration, resulting in a decrease in its surface pitting potential, so that its ability to cope with environmental corrosion decreased, after a period of time, rust on its surface.
Early hydration behavior of novel amphoteric polymer in cement paste
Authors: Ke Yuliang 
Published: July 2021

Abstract
The development of the early strength of the concrete mainly depends on the early hydration process of the cement, and there are many factors influencing the early hydration process of the cement. It is of great significance to study the mechanism of the polymer on the cement hydration for the development of the product. The amphoteric polymer was synthesized by (2-propenyloxyethyl) trimethyl ammonium chloride, acrylic acid and isopentene polyoxyethylene ether with different molar ratio. The chemical structure of polymer was characterized by GPC, and the performance of cement with polymers was observed by isothermal calorimetry and compressive strength of mortar. The results showed that the new amphoteric polymer has a strong promoting effect on the early hydration of cement. With the increase of the amount of (2-propenyloxyethyl) trimethyl ammonium chloride, the hydration speed is faster, but the addition of amphoteric polymer results in the decrease of fluidity of cement paste, so it is necessary to control its amount reasonably.
Enhanced stability and performance of inverted perovskite solar cell using titanium interlayer
Authors: Sun Tian , Lin Xiaoyun , Wang Ya , Zhong Hong , Zhou Hang 
Published: July 2021

Abstract
Metal atom diffusing in perovskite solar cells (PSCs) results in pernicious effects, leading to degradation of efficiency and long-term stability. Here we report the potential of titanium (Ti) acting as permeation barrier interlayer between organic layer and metal electrode. The thin, compact titanium layer not only insulates active layer from external moisture, but also keeps metal electrode from further corrosion. By introducing titanium interlayer, open circuit voltage (Voc) and fill factors (FF) are both enhanced, presenting a power conversion efficiency of 20.52% (Voc of 1.127 V, Jsc of 22.136 mA/cm2, FF of 82.299%). Furthermore, the unencapsulated devices maintain 98.3% of their initial efficiency after 85°C thermal aging in ambient atmosphere (air, Relative Humidity: 50%-60%) for 55 hours.
Red loam soils blocks modified using cement-lime: Assessment of its optimum ratio, performance, and practice
Authors: Zhang Fupeng , Shi Lei , Liu Simian , Zhao Mingqiao , Ma Qian 
Published: July 2021

Abstract
This paper reports the optimal ratio of cement-lime modified rammed earth materials for red loam soils in the Changsha area. The optimal moisture content of 8%∼12% was determined by key indicators such as test block effect, compressive strength, and weather resistance. Subsequently, the physical properties, water resistance, and weather resistance of red loam soil blocks with different cement and lime ratios were compared, and the suitable ratios of cement-lime modified rammed earth material for the Changsha area were determined as follows: soil: sand: stone: lime: cement - 5:3:2:1/3:1:1. To verify the reasonableness and practicability of the experiments, the rammed simulated tests and practical applications were carried out.
Orthogonal experimental study on preparation of water glass from biomass ash
Authors: Liu Ao , Zuo Huimin , Zhang Peng , Zhou Mingyuan 
Published: July 2021

Abstract
Using fly ash from biomass power plant as raw material, sodium silicate was prepared by alkali melting method under normal pressure. Orthogonal experiments were designed to explore the effects of NaOH solution concentration, solid-liquid ratio (ratio of NaOH solution volume to biomass ash mass), reaction temperature and reaction time on the dissolution rate of SiO2 and the modulus of sodium silicate. The results showed that the optimal solution was NaOH concentration of 1mol/L, solid-liquid ratio of 1:4, reaction temperature of 120°C and reaction time of 4 hours. According to the experimental verification, the dissolution rate of silicon dioxide and the modulus of water glass in the optimal scheme reach 56% and 2.43, respectively, which is the best experimental condition.
Study on mechanical properties of lightweight and high strength polyurethane cement composite (PUC)
Authors: Gao Hongshuai , Dong Yaqiao , Zhang Kexing , Liu Hongbo 
Published: July 2021

Abstract
Polyurethane cement composite (PUC) has the characteristics of low density and strong bending and tensile strength. Firstly, the composition of PUC is introduced and analyzed. Then, the preparation method of PUC is proposed. It is found that molding time of PUC sample can be adjusted by catalyst, and the key step is drying and dehydration of cement during the preparation process. Finally, PUC specimens with four mixture ratios are prepared according to proposed preparation method, and compressive and bending tests are carried out. Test results show that, PUC has ductility and toughness; with mixture ratio decreasing, strength changes with a little range, but elastic modulus increases.
Talking about the New Uses of Several Inorganic Antibacterial Materials
Authors: Wu Zexin 
Published: July 2021

Abstract
In recent years, the outbreak of a variety of infectious diseases has had a significant impact on human health and social economy, so the research on antibacterial materials has become very important. The author sorted out and analyzed the principle preparation and related applications of the three current inorganic antibacterial materials, summarized their new uses in life, and discussed zinc-type composite inorganic antibacterial materials, zinc-europium antibacterial materials and zinc-Holmium antibacterial silica new antibacterial materials currently have some limitations and a bright vision for future research.