Virtual Simulation Technology Research Articles

Experimental and numerical evaluation for drum dynamic reliability under extremely complex working conditions

Coal mining machine drums are prone to damage and malfunction under extremely complex working conditions, which seriously affects the efficiency and safety of coal production. In this paper, based on the theory of coal rock cutting and virtual simulation technology, finite element models of drum cutting coal rock were established and then verified by physical experiments. Through simulation analysis, the dynamic reliability of the drum was studied from three aspects: load, stress and wear, and a mathematical model of drum load was established with respect to the traction speed and drum rotation speed; based on the orthogonal test, the optimal working parameters to improve the wear resistance of the drum were derived. The results of the study found that when the traction speed increases, the load on the drum increases, and when the drum rotation speed increases, the load on the drum decreases; when the traction speed is increased from 2 to 6 m/min, the stress on the pick body under different rotation speeds increases to different degrees, with an average increase rate of 27.394%; when the drum rotation speed is 90 r/min, the traction speed is 3 m/min, and the coal loading mode is projectile loading, the wear depth of the picks and spiral blades is relatively small. The research method and results of this paper can provide a reference for the selection of the drum working parameters.

Effect of virtual reality training to enhance laparoscopic assistance skills

BackgroundWhile laparoscopic assistance is often entrusted to less experienced individuals, such as residents, medical students, and operating room nurses, it is important to note that they typically receive little to no formal laparoscopic training. This deficiency can lead to poor visibility during minimally invasive surgery, thus increasing the risk of errors. Moreover, operating room nurses and medical students are currently not included as key users in structured laparoscopic training programs.ObjectivesThe aim of this study is to evaluate the laparoscopic skills of OR nurses, clinical medical postgraduate students, and residents before and after undergoing virtual reality training. Additionally, it aimed to compare the differences in the laparoscopic skills among different groups (OR nurses/Students/Residents) both before and after virtual reality training.MethodsOperating room nurses, clinical medical postgraduate students and residents from a tertiary Grade A hospital in China in March 2022 were selected as participants. All participants were required to complete a laparoscopic simulation training course in 6 consecutive weeks. One task from each of the four training modules was selected as an evaluation indicator. A before-and-after self-control study was used to compare the basic laparoscopic skills of participants, and laparoscopic skill competency was compared between the groups of operating room nurses, clinical medical postgraduate students, and residents.ResultsTwenty-seven operating room nurses, 31 clinical medical postgraduate students, and 16 residents were included. The training course scores for the navigation training module, task training module, coordination training module, and surgical skills training module between different groups (operating room nurses/clinical medical postgraduate/residents) before laparoscopic simulation training was statistically significant (p < 0.05). After laparoscopic simulation training, there was no statistically significant difference in the training course scores between the different groups. The surgical level scores before and after the training course were compared between the operating room nurses, clinical medical postgraduate students, and residents and showed significant increases (p < 0.05).ConclusionOur findings show a significant improvement in laparoscopic skills following virtual surgery simulation training across all participant groups. The integration of virtual surgery simulation technology in surgical training holds promise for bridging the gap in laparoscopic skill development among health care professionals.

Virtual maintenance simulation technology in civil aircraft engineering

Based on the requirements and characteristics of civil aircraft maintainability design, virtual simulation technology is introduced into aircraft maintainability design, analysis, and verification. This paper presents the flow of virtual maintenance simulation through visual analysis, physical accessibility analysis, and operational space analysis. A method of virtual maintenance simulation accessibility analysis is presented. The evaluation of virtual simulation design is realized. In the design stage, through the virtual maintenance simulation analysis, the design factors affecting maintenance and potential maintenance hazards are found in advance. A timely improvement is made to improve the level of aircraft maintainability design and reduce later maintenance costs.

The practice and prospect of algorithm-driven virtual simulation technology in medical undergraduate education

Abstract Amid growing interest in the use of virtual simulation platforms in educational settings, the reform of medical education increasingly looks to virtual simulation technology as a promising new avenue. This study aims first to analyze the components of a virtual simulation system and to enhance the functionality of virtual simulation technology by optimizing the network model algorithm. Utilizing cloud computing technology, a virtual simulation teaching experiment platform was constructed. Further, a virtual simulation medical education system based on the BOPPPS teaching model was developed to address the constraints of practical experience in the traditional undergraduate medical education model. Empirical analysis of the virtual simulation medical education mode reveals that the CPU utilization rate on the constructed cloud platform ranged from 2% to 35%, and the memory usage varied between 15 and 25 GB. In comparative assessments of medical education practices, this study found that students trained under the virtual simulation technology-enhanced model scored 0.96 to 1.53 points higher in various skill assessments than those trained under traditional methods. Moreover, the total scores for communication abilities increased by 5.48 points, highlighting a significant improvement. These results affirm the superiority of the virtual simulation technology medical education model presented in this study. They underscore its practicality and feasibility for application and development in undergraduate medical education, providing a substantive pathway for integrating advanced virtual simulation technologies into medical training.

Study on the timeliness of English teaching for college students under the background of multimedia

Abstract Starting with the actual multimedia English teaching, this paper analyzes the advantages of an intelligent learning environment as well as the application of virtual reality technology in English teaching. Comparing the traditional CAI courseware development with the courseware development based on virtual reality technology, it is proposed to use wavelet transform to decompose multimedia image resources, establish a static 3D virtual model library, transmit multimedia image files, and convert virtual reality-based network multimedia English teaching courseware. Propose a speech recognition algorithm based on DNN-HMM to help construct a multi-context virtual reality interaction mode. Examine the attitudes of students in different grades towards the use of virtual simulation technology in English teaching. Analyze the role of teaching timeliness in multimedia courseware and analyze the English classroom interaction in an interactive multimedia environment. In terms of student satisfaction, “your attitude towards the application of virtual simulation technology in English classes” is related to “the application of virtual simulation technology in English classes helps to open up new ways of English education, innovate new methods of education, and improve the carrier of education.” The correlation results are x 2 =32.051, p =0.000, showing 0.01 level of significance. It indicates that students believe that using virtual simulation technology in teaching can innovate English teaching and that using multimedia courseware can also enhance the timeliness of English teaching. The university’s English teaching mode using multimedia courseware and interactive multimedia environments can enhance English performance, and 80.37% of students believe it has timeliness in teaching.

Research on Reconstruction of Practical Training System of Big Data and Accounting Professional Group Based on Virtual Simulation Technology

Research on Reconstruction of Practical Training System of Big Data and Accounting Professional Group Based on Virtual Simulation Technology

Reform and Exploration of Optimizing Orthopedic Teaching Mode Based on PBL Theory and Virtual Simulation Technology

Reform and Exploration of Optimizing Orthopedic Teaching Mode Based on PBL Theory and Virtual Simulation Technology

Study on the dynamic characteristics of planetary gear transmission mechanism of metal cold rolling mill

Using the parametric modelling feature in Solidworks software, a three-dimensional solid model of a planetary gearbox with linear reciprocating motion of the output shaft was constructed. By conducting theoretical calculations related to the kinematics of the transmission system and combining Adams virtual prototyping simulation technology, a dynamic simulation model of the planetary gear transmission mechanism was established to analyse the motion laws and dynamic characteristics. The simulation results were compared and analysed against the theoretical calculation results, and they showed good agreement and consistency. The study also investigated the impact of counterweights on the inertia forces and moments of the output shaft in the transmission mechanism. The results indicated that adding counterweights effectively reduced the inertia impact caused by inertia forces at the start and end positions of the stroke, as well as the inertia torque caused by changes in angular acceleration during the startup and stopping phases, thereby enhancing the smooth operation of the mechanism. Additionally, different thicknesses of counterweights had varying effects on balancing the inertia forces and moments of the output shaft. The study aimed to find the optimal thickness of counterweights to achieve the best balance effect. Furthermore, the study examined the influence of different speeds of the driving gear on the inertia forces of the output shaft. The results showed that at a driving gear speed of 1500 rpm, the horizontal thrust generated by the output shaft was 63566 N, which could provide the required thrust for the rolling mill operation, and the inertia forces of the output shaft tended to stabilize.

虚拟仿真技术在高中生物多样性保护教学中的应用研究——以《生物与环境》为例

虚拟仿真技术在高中生物多样性保护教学中的应用研究——以《生物与环境》为例

Development Status, Comparison and Inspiration of Integrated Circuit Virtual Simulation Teaching at Home and Abroad

Abstract The cultivation of higher vocational integrated circuit technology professionals requires a complete practical training teaching system and practical training conditions, especially integrated circuit layout design, production process, packaging and testing and other process personnel training needs to be completed in a real work scenario, the virtual simulation training is just for the integrated circuit professional education and teaching to provide support. This paper takes CNKI, SCI and EI databases as the research data source. It uses word frequency analysis and co-word analysis in statistical analysis to quantitatively analyze the development status of virtual simulation teaching of integrated circuits at home and abroad. And combined with the clustering analysis algorithm to explore the integration results of the keywords of integrated circuit virtual simulation teaching at home and overseas, and give the path to improve the high-quality development of integrated circuit virtual simulation teaching. It has been found that the domestic research related to IC virtual simulation teaching has improved by 80 times during 2000–2022, but the foreign research is 1.642 times higher than the domestic one. In addition, domestic and foreign countries are mainly focused on virtual simulation and innovative practice, respectively, and their word frequencies have reached 465 and 596 times respectively. Higher vocational colleges and universities need to optimize the teaching mode of industry-teaching integration, use virtual simulation technology to help students understand the knowledge related to integrated circuits, and provide technical support for improving the quality of talent training.

Research on the Influence of Ideological and Political Education of Digital Virtual Simulation Technology on College Students' Health

Research on the Influence of Ideological and Political Education of Digital Virtual Simulation Technology on College Students' Health

Research and Discussion on the Application of Virtual Simulation Technology in Obstetrics and Gynecology Teaching

Research and Discussion on the Application of Virtual Simulation Technology in Obstetrics and Gynecology Teaching

Exploration of Virtual Simulation Technology in Art and Design Education

Exploration of Virtual Simulation Technology in Art and Design Education

Classification and analysis of fabric types for shirts: A comparison between virtual and real fabrics

The 3D virtual simulation technology is widely applied in the fashion industry tasks, including product planning such as 3D sample work, design development, marketing, and display, enabling styling of virtual models for differentiation. Achieving a digital representation of fabrics that closely resembles actual materials requires additional information obtained through experiments, beyond basic fabric characteristics like fiber content, weight, and thickness. However, research reflecting changes in fabric properties is relatively lacking. Therefore, this study aims to propose criteria for the physical characteristics of shirt fabrics and compare fit variations of virtual garments based on fabric properties to enhance the usability of virtual garment simulation. Thus, we compared and analyzed the characteristics and draping properties of shirt fabrics using two different fabric testing methods, KES-FB and CLO Fabric Kit, and investigated correlations based on each measurement device. Additionally, virtual clothing was performed based on various fabrics to compare clothing suitability. Consequently, we classified fabrics into three clusters for each measurement method and confirmed the characteristics of each cluster. Furthermore, by visually comparing the fit of shirts based on fabric properties, we observed changes in clothing pressure and deformation rate among clusters. Therefore, we believe that the results of this study can assist designers with low proficiency in 3D virtual garment production when applying virtual materials to designs. These findings are expected to be valuable for utilizing 3D virtual clothing simulations in the fashion industry for online sales and marketing, as well as in the gaming industry for avatar costume design.

Research on the Application Strategy of 5G+ Virtual Reality Immersive Teaching to Empower Higher Vocational English Classroom

English teaching in higher vocational colleges often lacks the real context of language use, which can not meet the needs of a lot of repeated training. 5G+ virtual simulation can effectively solve the dilemma of English teaching in higher vocational colleges. This paper is based on the experience of virtual simulation technology integration in English classes in higher vocational colleges, which plays an important role in training students’ vocational skills and promoting employment.

Teaching innovation and practice of communication principles in the context of the 5G era

As a cutting-edge technology in the field of communication, 5G technology poses new challenges and opportunities to the teaching of communication principles courses. "Communication Principles", as the core course of these majors, must be constantly updated to adapt to the development of new communication technologies. This article takes the "Principles of Communication" course as an example, combines the characteristics of 5G technology and education, discusses the characteristics of the course and the current teaching situation, and proposes a series of teaching reform measures. These measures include structural adjustments to theoretical course content, using Matlab virtual simulation technology to strengthen experimental teaching, combining postgraduate entrance examination professional knowledge explanations, introducing after-school 5G practical training and professional certificate assessment, etc. Practice has proven that these teaching reforms can effectively improve the integration of theory and practice, enhance students' ability to analyze and solve problems, and better meet the training needs of applied talents.

Application of Virtual Simulation Technology in Research Experiment Teaching and Management

Application of Virtual Simulation Technology in Research Experiment Teaching and Management

Impact of Mental Health Education with Digital Virtual Simulation Technology on the Health of College Students

Impact of Mental Health Education with Digital Virtual Simulation Technology on the Health of College Students

《食品微生物检验学》虚拟仿真教学改革初探

《食品微生物检验学》虚拟仿真教学改革初探

Improved ergonomic layout design of metro control center based on virtual simulation technology and genetic algorithm

For the existing control center layout methods do not have targeted measures to implement human factors requirements, this paper puts forward a specific human factors design method for metro control center layout. This method covers the overall process of ergonomic standards and actual engineering requirements in personal space determination, overall location design, and personnel post layout. It introduces discrete personnel simulation to assist in physical control center layout design for the controllers’ safety. To make the posts between the unified lines and the connections between the lines more reasonable, an improved genetic algorithm is used to solve the Systematic Layout Planning. This design flow and algorithm can be quickly adapted according to the project's actual needs and the application of human factors guidelines. This method is also suitable for the layout planning and design of similar large spaces, large numbers of people, and complex associated control centers.