Digital Simulation Technology Research Articles

Modal analysis of key components of crusher based on digital simulation technology

The modal characteristics of the crusher rotor and shell constitute the crucial factors influencing vibration and noise. Based on the principle of simplification, the rotor component model was established. Through mesh optimization, the model accuracy and calculation efficiency can be ensured, and the calculation of natural frequency and modal shapes was completed based on ANSYS. To verify the accuracy of the finite element model, the modal test was carried out by the hammering method. Sensors were set in three different directions to obtain the frequency response function and the modal assurance criterion matrix mode confidence criterion. Using the same research method, the modal characteristics of the shell model were simulated and analyzed. The research results show that the modal parameters identified by the modal test are basically consistent with the simulation model. The natural frequencies of the rotor and the shell are quite different from the excitation frequency of the motor, and resonance problems will not occur when the crusher is proper functioning.

Digital technology-assisted extraction of impacted maxillary third molar located between the furcation of maxillary second molar by root dislocation: a case report.

Most of the maxillary impacted third molars are located in the maxillary tuberosity, where the vision and operation space are limited. This paper reports a case of surgical extraction of the left maxillary horizontal superhigh impacted third molar, which is located between the roots of the adjacent teeth and is closely related to the maxillary sinus. The digital simulation technology was used to reconstruct a three-dimensional visual image of the patient's maxilla, related teeth, and other adjacent anatomical structures to assist in finding the optimal surgical method accurately. Root dislocation before the crown not only protects the roots of the adjacent tooth, but also reduces the risk of maxillary sinus lining damage or perforation during operative procedures, improves the efficiency of the operation, and reduces surgical trauma, which conforms to the concept of minimally invasive surgery and provides a new idea and experience for the clinical extraction of such maxillary impacted third molars.

Examination of Digitalized Non-Heritage Apparel Design Using CLO3D: Case Study of Ningbo Gold and Silver Color Embroidery

Driven by the wave of digitalization and fashion, traditional handicrafts in intangible cultural heritage (ICH) have experienced a remarkable transformation in the existing social value coordinate system. On the one hand, as a key carrier of the historical and cultural memory of the nation and the state, intangible cultural heritage is faced with many challenges of preservation and inheritance; on the other hand, the rapid development of digital technology provides innovative solutions for the modernization of traditional arts. This paper uses Ningbo gold, silver and color embroidery as a case study to explore the application of CLO3D software technology in the design of nonheritage apparel products and shows nonheritage crafts through digital simulation technology, which is not only the future development direction of the apparel industry but also the reconstruction of the apparel form and the use of function, aiming to assess its impact on nonheritage protection and innovation and to find a new path for the digital inheritance of nonheritage.

EFFECTS OF DIGITAL GAME-BASED LEARNING IN STEM EDUCATION ON STUDENTS’ MOTIVATION: A SYSTEMATIC LITERATURE REVIEW

STEM education, which includes science, technology, engineering and mathematics, has been expanding for the past two decades. This study aimed to map new trends and the possibility of implementing digital game-based learning (DGBL) in STEM education. For this purpose, a systematic literature review was conducted. The resulting sample was further selected according to PRISMA guidelines, with screening and eligibility processes conducted based on the inclusion criteria defined concerning the research objective. This review consisted of twenty-eight studies. The findings revealed a growing interest in DGBL in STEM education from 2018 to 2023. Furthermore, most studies have focused on the K-12 education system and universities. According to the review, educational games for digital learning and simulation technology are the most promising tools used in research. The analysis is launched by studying the effects that influence the increase of student motivation in DGBL teaching STEM education. The findings support the conclusion that prior experience in gaming has a positive impact on increasing students' motivation to learn in DGBL STEM teaching. In addition, students' previous knowledge of a STEM subject increases engagement and motivation. Implementing educational computer games, therefore, showed a great interest in students in STEM education. Keywords: digital game-based learning, students’ motivation, STEM education, systematic literature review

Retracted: Fuzzy Intelligence in Physical Immersion Teaching System Based on Digital Simulation Technology

Retracted: Fuzzy Intelligence in Physical Immersion Teaching System Based on Digital Simulation Technology

Interaksi Antara Dunia Digital dan Fisik: Pemanfaatan Teknologi Simulasi Digital dan Cetak 3D

Digital simulation technology and 3D printing have eliminated the boundaries between the digital and physical world in the current digital era. This article aims to explore the increasingly close integration between the two domains through the use of digital simulation technology and 3D print. This research explores the application of this technology in various industrial sectors, examines the benefits offered, and identify the challenges faced in the implementation process. Literature study methods and secondary data analysis are used to present a comprehensive picture of the development of digital simulation and 3D print technology. This technology not only accelerates the design and production process, but also increases operational efficiency and encourages innovation in various industrial fields. This study reveals technology adoption by the manufacturing sector for fast prototyping and its important role in education to increase student involvement. Despite its various benefits, the implementation of this technology faces significant challenges such as high initial costs and resistance to change. However, with sustainable research and development and expanding industrial capacity, the potential of digital simulation technology and 3D print to improve innovation and future efficiency remains large. In conclusion, this article highlights the crucial role of digital simulation technology and 3D print in connecting the digital and physical world. By continuing to explore new applications and overcome existing challenges, it can be created a future where this technology not only supports industrial progress, but also strengthens the integration between virtual and physical reality faced today.

Research on Carbon Emission of Solar Grade Polysilicon Produced by Metallurgical Route Using Digital Simulation Technology

Under the enormous pressure of carbon reduction, we need to have a clear understanding of the environmental impact of the energy-intensive and high-emission polysilicon industry. With the rapid development of technology, we now have the ability to monitor the inflow and outflow of materials in enterprises, so as to obtain the life cycle inventory required for environmental impact assessment. And solve the problems of large data collection workload and long working cycle encountered in conventional life cycle assessment. By combining digital simulation technology and life cycle assessment, we analyze carbon dioxide (CO2) emission in each production process of 1 kg solar grade polysilicon (SoG-Si) by metallurgical route (MR) in detail. We not only analyze four typical production processes of MR, namely slag refining, hydrometallurgy, directional solidification and electron beam refining. The production process of metallurgical grade silicon is also analyzed. It is obtained that the production of 1 kg SoG-Si by MR will produce 69.77 kg CO2. The contribution analysis shows that the CO2 produced by electron beam refining, metallurgical silicon smelting, secondary directional solidification and primary directional solidification is more significant, reaching 38.47%, 20.88%, 15.84% and 14.50%, respectively. The sensitivity analysis shows that the sensitivity of electric power in the process of electron beam refining, secondary directional solidification, primary directional solidification and metallurgical silicon smelting is significant, reaching 38.47%, 15.77%, 14.45% and 13.81%, respectively. In addition, according to the analysis results, the improvement suggestions to reduce CO2 emission are given.

Gamification and Game Based Learning for Vocational Education and Training: A Systematic Literature Review.

Games have been used as a learning tool for centuries. Gamification and game-based learning are becoming more prominent in educational settings for several reasons. When it comes to learning, being focused and immersed can massively improve a student's experience. The purpose of this study is to map the emerging trends of gamification and game-based learning (GBL) in the Vocational and Education Training (VET) sector. For this purpose, a Systematic Literature Review was conducted through the three most relevant scientific databases - Web of Science, Scopus, ScienceDirect, and PubMed with Google Scholar as a supporting database. The obtained sample was further selected following the PRISMA guidelines with screening and eligibility processes conducted based on inclusion criteria that were defined with consideration to the research's aim. This review comprised seventeen studies. The findings revealed a growing interest in the Asian continents in research from 2020 onwards. Furthermore, most of the study is centred on vocational schools and colleges in the engineering and healthcare fields. According to the overview, the digital learning platform and simulation technology are the most promising tools used in the research. The findings support the conclusion that gamification and game-based learning can improve academic performance, engagement, and motivation in vocational education learners. As a result, this study suggests that more research is needed to determine the gamification strategies that are most suited for vocational education and learning.

Design and simulation of fuselage product digital assembly based on DELMIA

As the core process of aircraft manufacturing, fuselage assembly directly affects the performance and quality of the aircraft. However, unreasonable assembly processes, collisions and interferences usually occur in the case of actual assembly. This paper develops the fuselage assembly process design and simulation in a virtual environment established by DELMIA platform. The digital environment consists of products, equipment, workers and other assembly elements. Finally, interference detection and ergonomic analysis are completed through the assembly process simulation. The case indicates that digital assembly process design and simulation technology could reduce the error rate and improve assembly quality.

Research of “one key sequence control” test method based on panoramic digital simulation technology

Aiming at the problem that the current “one key sequence control” system cannot effectively carry out the test work after being deployed in a substation project, a “one key sequential control” test method based on panoramic digital simulation technology is proposed. The actual primary and secondary equipment is replaced by digital analog simulation, the instanced sequential control operation ticket is completed based on professional atlas theory, and the full logic test of the “one key sequence control” equipment status configuration library, operation ticket configuration library, operation process, error prevention logic, dual criteria, etc., is completed so as to realize the visual test of all configurations of the “one key sequence control” system. It provides an efficient and reliable technical method for the testing and acceptance of the “one key sequential control” system.

Assessment of reactor flow field prediction based on deep learning and model reduction

All-around and full-cycle digital simulation technology can improve the safety and economy of the reactor in research, development, operation, and maintenance processes. However, for the local three-dimensional fluid dynamic problems in complex reactor system, traditional computational fluid dynamic (CFD) methods are severely limited by the solution efficiency and accuracy. This study proposed a rapid flow field prediction method based on singular value decomposition (SVD) and deep learning. The raw flow field snapshot data was compressed using SVD to extract low-dimensional features, and the deep neural network was used to construct a flow field reduced-order model to achieve rapid flow field prediction. A benchmark problem of flow around a cylinder was selected to assess the efficacy of this method. Furtherly, this method was applied in the three-dimensional flow field simulations of the fuel assembly. The results demonstrated that the reduced-order model (ROM) error was less than 6% compared with that of the CFD model, and the time consumption was less than 1% of that of the CFD model. This exploration illustrates that high-fidelity ROMs based on order reduction and deep learning are a viable route to developing engineering-ready digital twins of nuclear reactors.

Green building considering image processing technology combined with CFD numerical simulation

Abstract In order to solve the increasing phenomenon of building energy consumption, the green building is deeply studied by combining image processing technology and CFD digital simulation technology. The research status of green building design is compared. The optimal green building design scheme is obtained by introducing CFD numerical simulation method, introducing finite element Navier -Stokes equation, equation turbulence model and so on. This paper analyzes the design optimization of modern green buildings, and explores the application of CFD numerical simulation technology in green building design. In practice, combined with the practice of CFD in the research project, this paper studies the five evaluation indexes of CFD technology in green building design, such as land saving, water saving, energy saving, material saving and indoor environment. This paper verifies the possibility of using CFD technology in the process of green building design, and promotes the application of CFD in green building design by using CFD technology to assist green building evaluation standards in green building design.

Study on the modeling method of sunflower seed particles based on the discrete element method

A modeling and simulation method was developed to comprehensively describe and build discrete element model for non-spherical particles based on the discrete element method (DEM). To popularize the application of sunflower seeds in computer digital simulation technology, the motion patterns and dynamic response characteristics of sunflower seeds in key processes such as sowing and harvesting are explored with the help of discrete element analysis methods to optimize the dimensional parameters and structural performance of related mechanical components. This paper takes edible sunflower seeds 1013 as the research object, and proposes a discrete element analysis model building method for individual sunflower seeds and groups of sunflower seeds particles by testing and analyzing the triaxial dimensions and three-dimensional volumes of sunflower seeds and the shape simplification of the seeds. 6 sunflower seed multi-sphere models (25 sub-spheres, 28 sub-spheres, 31 sub-spheres, 34 sub-spheres, 37 sub-spheres, 40 sub-spheres) with different accuracy and 2 sunflower seed polyhedral models (cuboid and triangle pyramid) with different shapes were established using the multi-sphere and polyhedron filling methods. The physical tests and angle of repose simulation tests were applied to measure and calibrate the intrinsic parameters and contact parameters of sunflower seeds. The physical test results of the bulk density and angle of repose are compared with the simulation test results to verify the feasibility of the discrete element modeling method for sunflower seeds proposed in this paper. The results show that the simulation results of bulk density and angle of repose are closer to the experimental results when the multi-sphere model is 31 sub-spheres and the polyhedral model is cuboid, considering fewer spheres and faster simulation rates. And the accuracy and applicability of the discrete element model and parameters of sunflower seeds are further verified through the simulation test of the productivity of the spiral conveying device of the 4ZXRKS-4 sunflower combine harvester test bed.

A Method of Integrated Energy Metering Simulation Data Generation Algorithm Based on Variational Autoencoder WGAN

With the development of integrated energy systems, the penetration rate of all types of distributed power sources continues to increase. In a grid oriented to integrated energy metering, the metering business of different energy sources needs to fully consider the dynamic characteristics of different user loads. This paper aims at the generation of large-scale integrated energy metering data in large-scale integrated energy digital simulation technology, starting from supporting the construction of an integrated energy metering simulation system, combining various business applications and artificial intelligence technology under the background of the energy Internet. For the requirements of energy metering simulation, a method of integrated energy metering simulation data generation based on variational autoencoder WGAN is proposed, and the effect of the method proposed in this paper is verified through actual metering scene data.

Retracted] Fuzzy Intelligence in Physical Immersion Teaching System Based on Digital Simulation Technology

In order to improve the effect of physics teaching, this study combines digital simulation technology to construct a physical immersion teaching system to improve the effect of physics teaching in colleges and universities. Moreover, this study transforms abstract physical knowledge into recognizable digital physical images and realizes the idea of multifeature fusion through reasonable feature selection and the use of a classifier algorithm suitable for the subject of this paper. In addition, this study proposes a new algorithm based on the morphological features of geometric images, which combines the transformation detection method of cluster analysis to realize the intelligent processing of images. Finally, this study verifies the effectiveness of the physical immersion teaching system based on fuzzy intelligence and digital simulation technology through experimental research. The results show that the system can effectively improve the effect of physics teaching.

Research on Digital Twin Modeling and Simulation Technology for Distributed Resource Aggregation Regulation

Virtual power plants need to build awareness, transmission and application of information flow model, require multiple levels between virtual power plant, the virtual power plant each participation main body, regulation and control of virtual power plant and quantification of communication information transmission between the main constraints, this paper studies the distributed resources polymerization technology, the modeling and simulation of mechanical and electrical characteristics of virtual power plant communication network transmission characteristics of digital simulation technology, This paper proposes a simulation method of diversified resource aggregation regulation based on virtual group structure. By collecting the electrical characteristic change curve of each distributed unit, and stacking the transmission characteristics of communication network, digital simulation aggregation is carried out to obtain the digital model of cooperative operation and control characteristics of virtual power plant "information flow + energy flow". Through this model will be connected to Matlab/Simulink power system simulation environment for power regulation and operation simulation verification.

Enabling flexible manufacturing system (FMS) through the applications of industry 4.0 technologies

The implementation of Industry 4.0 technologies has improved the flexibility of the entire manufacturing system. These technologies are the Internet of Things (IoT), big data, Artificial Intelligence (AI), Additive Manufacturing (AM), advanced robotics, virtual reality, cloud computing, simulation, and among others, have arisen to improve the flexibility in the entire manufacturing system. Industry 4.0 is becoming recognised as a unique industrial paradigm. It is predicated on the widespread adoption of communication and information technology, which would lead to improved organisational performance and flexibility. The incorporation of Industry 4.0 is the true game-changer in terms of flexibility and customisation. Manufacturers may utilise this technology to build digital twins of items used by consumers in the real world. The digital twin gets real-time information from sensors on the actual objects. Manufacturers benefit from digital twin and simulation technology, including predictive maintenance and making errors easier and faster to rectify. This paper discusses Industry 4.0 and its Flexible Manufacturing System (FMS) capability. Different dimensions and technologies of Industry 4.0 Practices for improving FMS performance are studied,d and then discusses several flexible approaches using Industry 4.0 technologies are. One of the most significant benefits of adopting virtual infrastructure maintained by a service provider is improved flexibility. Cloud services allow auto-scaling, which means that the underlying computer resources automatically adjust to changing utilisation rates. Industry 4.0 increases production flexibility, allowing a facility to respond to market changes quickly. A plant control system automatically varies output depending on shifting utility rates, lowering production costs. Industry 4.0 offers some incredible benefits and has gone a long way in the last several years.

Art Online Design Based on Digital Simulation Technology

In order to improve the humanization and convenience of online art design, this paper applies digital simulation technology to the art online design system and establishes a set of sequential multi-free-form surface design methods. Based on the obtained front free-form surfaces, this paper establishes the relationship between the discrete points on the subsequent free-form surfaces and their spatial solid angles and, through extremely complex theoretical deduction, finally obtains the subsequent free-form surfaces. In addition, by combining the two free-form surfaces to enter the 3D modeling software, we can obtain an optical lens with multiple free-form surfaces to improve the digital simulation effect. Finally, this paper uses the intelligent system constructed in this paper to conduct multiple sets of simulation experiments to evaluate the digital effect and artistic design effect of the system constructed in this paper. From the experimental research, it can be known that the art online design system based on digital simulation technology constructed in this paper basically meets the expected goals of the system constructed in this paper.

Simulation Experiment Analysis and Verification of Ship Resonance for Shipboard Helicopter

According to the dynamic characteristics of shipboard helicopter landing, the time-domain load of ship movement on the fuselage under complex sea conditions, the nonlinear dynamic characteristics of rotor damper, and the influence of rotor blade flapping movement and aerodynamic force are considered. The fuselage, rotor lagging damper, blade flapping and lagging movement and aerodynamic model are modeled separately as sub-models, and then the subsystems are integrated according to mechanical principles to finally establish the ship resonance analysis model of helicopter. The method for simulation experiment of ship resonance is put forward. The whole process of ship resonance experiment is dynamically demonstrated by digital simulation technology, which simulates the excitation load on the fuselage caused by the rise and fall and rolling movement of the ship. Actually simulates the lifting collective pitch and conducts periodic excitation by disturbing the control stick. Based on the transient response of the time-domain simulation dynamic system under disturbance, the stability of ship resonance is analyzed. The accuracy of the simulation method is verified through project cases, and the simulation experiment analysis techniques for accurately predicting the unstable boundary of ship resonance are mastered, which provides design and analysis means instead of the experiment that cannot be carried out in model development.

A Research on An Intelligent & Automatic Help Seeking System

The safety of all the factories and families should not be ignored. In this paper, in case of emergency, people in factories or at home can still send out a distress signal through voice without mobile phone, so as to ensure the safety of people and facilities. The authors have developed a smart home help for the elderly device based on communication, intelligent manufacturing, materials and digital simulation technology. The main purpose is to solve the problem that when the elderly are alone at home, they can make an emergency call for help through this system when they encounter sudden accidents. This technology is also very suitable for the safety of factories and other scenes.