Pub Date : 2023-01-01DOI: 10.23977/jemm.2023.080301
Shourui Xuan, Jian-Hui Gao, Q. Zhang, Chao Zhang
: Taking the lifting lug of the automobile exhaust pipe as the research object, the geometric modeling of the lifting lug of the automobile exhaust pipe was established. The lifting lug was analyzed by finite element method using Ansys software, and the lifting lug structure was optimized according to the topology optimization method. The 20% area of the lifting lug model was taken as the optimization area, and the new lifting lug model was established for verification. The verification results showed that the maximum stress and maximum deformation of the optimized lifting lug were increased to some extent. However, it still meets the requirements for lifting lug materials.
{"title":"Finite Element Analysis and Optimization Design of Automobile Exhaust Pipe Lifting Lugs","authors":"Shourui Xuan, Jian-Hui Gao, Q. Zhang, Chao Zhang","doi":"10.23977/jemm.2023.080301","DOIUrl":"https://doi.org/10.23977/jemm.2023.080301","url":null,"abstract":": Taking the lifting lug of the automobile exhaust pipe as the research object, the geometric modeling of the lifting lug of the automobile exhaust pipe was established. The lifting lug was analyzed by finite element method using Ansys software, and the lifting lug structure was optimized according to the topology optimization method. The 20% area of the lifting lug model was taken as the optimization area, and the new lifting lug model was established for verification. The verification results showed that the maximum stress and maximum deformation of the optimized lifting lug were increased to some extent. However, it still meets the requirements for lifting lug materials.","PeriodicalId":32485,"journal":{"name":"Journal of Engineering Mechanics and Machinery","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68788496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.23977/jemm.2023.080109
Jianping Gao, Shourui Xuan, Q. Zhang
: Taking the equation racing car frame as the research object, the 3D modeling software was used to establish the model of the racing car frame, and the free mode analysis of the frame was conducted through the finite element analysis software. The natural frequency of the frame was within the range of 30-120Hz, avoiding the possibility of resonance, indicating that the structural design of the frame was reasonable. In addition, the vibration mode of the frame was analyzed. This provides a certain idea for further optimization research of the frame.
{"title":"Modal Analysis of Formula Racing Frame","authors":"Jianping Gao, Shourui Xuan, Q. Zhang","doi":"10.23977/jemm.2023.080109","DOIUrl":"https://doi.org/10.23977/jemm.2023.080109","url":null,"abstract":": Taking the equation racing car frame as the research object, the 3D modeling software was used to establish the model of the racing car frame, and the free mode analysis of the frame was conducted through the finite element analysis software. The natural frequency of the frame was within the range of 30-120Hz, avoiding the possibility of resonance, indicating that the structural design of the frame was reasonable. In addition, the vibration mode of the frame was analyzed. This provides a certain idea for further optimization research of the frame.","PeriodicalId":32485,"journal":{"name":"Journal of Engineering Mechanics and Machinery","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68788840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.23977/jemm.2023.080205
Y. Chi
: With the continuous development of the automobile industry and people's increasing emphasis on automobile safety, anti-trapping of electric windows as an important safety function has attracted more and more attention from users. This paper studies the speed difference-ripple scheme of electric window anti-pinch, analyzes the theory of speed difference method, and expounds the principle and application of ripple technology. Simulink software is used to model and simulate the current and speed difference, which verifies the feasibility and effectiveness of the scheme. The research results show that the speed differential method-ripple scheme is a feasible and effective anti-pinch technology for electric windows, and it has broad application prospects compared with the traditional Hall sensor anti-pinch technology.
{"title":"Simulation analysis of electric window anti-pinch based on speed difference method","authors":"Y. Chi","doi":"10.23977/jemm.2023.080205","DOIUrl":"https://doi.org/10.23977/jemm.2023.080205","url":null,"abstract":": With the continuous development of the automobile industry and people's increasing emphasis on automobile safety, anti-trapping of electric windows as an important safety function has attracted more and more attention from users. This paper studies the speed difference-ripple scheme of electric window anti-pinch, analyzes the theory of speed difference method, and expounds the principle and application of ripple technology. Simulink software is used to model and simulate the current and speed difference, which verifies the feasibility and effectiveness of the scheme. The research results show that the speed differential method-ripple scheme is a feasible and effective anti-pinch technology for electric windows, and it has broad application prospects compared with the traditional Hall sensor anti-pinch technology.","PeriodicalId":32485,"journal":{"name":"Journal of Engineering Mechanics and Machinery","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68788859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.23977/jemm.2023.080309
The self-tightening technology of body tube is to apply a certain pressure in the inner bore of the body tube so that the corresponding residual stress is generated in the body tube, and the self-tightening residual stress can improve the stress situation of the body tube when it is in use and extend its service life. Most of the existing self-tightening body tube research for large-caliber artillery and are simplified to a thick-walled cylinder model, ignoring the internal rifling of the body tube and chrome-plated processing factors, and for the impact load on the body tube and cracks on the self-tightening body tube internal stresses of the impact of the same did not take into account the rifling and chrome layer. In order to address the above problems, this paper takes a small-caliber artillery body tube as the research object, compares the theoretical calculations with the finite element simulation, and carries out the simulation research on the ideal elastic-plastic artillery steel body tube.
{"title":"Finite element analysis of artillery self-tightening body tube stresses","authors":"","doi":"10.23977/jemm.2023.080309","DOIUrl":"https://doi.org/10.23977/jemm.2023.080309","url":null,"abstract":"The self-tightening technology of body tube is to apply a certain pressure in the inner bore of the body tube so that the corresponding residual stress is generated in the body tube, and the self-tightening residual stress can improve the stress situation of the body tube when it is in use and extend its service life. Most of the existing self-tightening body tube research for large-caliber artillery and are simplified to a thick-walled cylinder model, ignoring the internal rifling of the body tube and chrome-plated processing factors, and for the impact load on the body tube and cracks on the self-tightening body tube internal stresses of the impact of the same did not take into account the rifling and chrome layer. In order to address the above problems, this paper takes a small-caliber artillery body tube as the research object, compares the theoretical calculations with the finite element simulation, and carries out the simulation research on the ideal elastic-plastic artillery steel body tube.","PeriodicalId":32485,"journal":{"name":"Journal of Engineering Mechanics and Machinery","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135500760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.23977/jemm.2023.080208
Yifan Bai, L. Zhao
: By analyzing the connotation, system structure, typical characteristics, and main categories of modern manufacturing enterprise technology, the development status and direction of modern manufacturing technology in various countries around the world are summarized. Introduced the cutting-edge technology layout, enterprise applications, and industry value chain development of China's manufacturing powerhouse. On this basis, this project intends to propose several policy recommendations for the development of manufacturing enterprises in China, including promoting the development of intelligent manufacturing, strengthening basic scientific research, and establishing a group of advanced manufacturing clusters for independent research and development.
{"title":"Research on Key Technologies for Value Chain Analysis and Optimization in Manufacturing Enterprises","authors":"Yifan Bai, L. Zhao","doi":"10.23977/jemm.2023.080208","DOIUrl":"https://doi.org/10.23977/jemm.2023.080208","url":null,"abstract":": By analyzing the connotation, system structure, typical characteristics, and main categories of modern manufacturing enterprise technology, the development status and direction of modern manufacturing technology in various countries around the world are summarized. Introduced the cutting-edge technology layout, enterprise applications, and industry value chain development of China's manufacturing powerhouse. On this basis, this project intends to propose several policy recommendations for the development of manufacturing enterprises in China, including promoting the development of intelligent manufacturing, strengthening basic scientific research, and establishing a group of advanced manufacturing clusters for independent research and development.","PeriodicalId":32485,"journal":{"name":"Journal of Engineering Mechanics and Machinery","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68788931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.23977/jemm.2023.080308
: As an ancient and charming navigation tool, the design and performance of sailboats have always been the focus of attention in the field of navigation technology. This article aims to explore the application of fluid dynamics in the design and performance optimization of sailboats. This article first introduces the basic concepts and principles of fluid mechanics, and then explores the applications of fluid mechanics in the resistance, lift, and stability of sailboats. By analyzing the design and optimization of different types of sailboats, the important role of fluid mechanics in improving sailboat speed, reducing resistance, optimizing sail shape, and ship stability has been revealed. This article emphasizes the value and potential of fluid mechanics in the field of sailing through case analysis, providing useful reference for future sailing design and technical research.
{"title":"Discussion on the Application of Fluid Mechanics in Sailing","authors":"","doi":"10.23977/jemm.2023.080308","DOIUrl":"https://doi.org/10.23977/jemm.2023.080308","url":null,"abstract":": As an ancient and charming navigation tool, the design and performance of sailboats have always been the focus of attention in the field of navigation technology. This article aims to explore the application of fluid dynamics in the design and performance optimization of sailboats. This article first introduces the basic concepts and principles of fluid mechanics, and then explores the applications of fluid mechanics in the resistance, lift, and stability of sailboats. By analyzing the design and optimization of different types of sailboats, the important role of fluid mechanics in improving sailboat speed, reducing resistance, optimizing sail shape, and ship stability has been revealed. This article emphasizes the value and potential of fluid mechanics in the field of sailing through case analysis, providing useful reference for future sailing design and technical research.","PeriodicalId":32485,"journal":{"name":"Journal of Engineering Mechanics and Machinery","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135500759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.23977/jemm.2023.080108
{"title":"Optimization Design of Suspension and Steering System for FSAE Racing Car","authors":"","doi":"10.23977/jemm.2023.080108","DOIUrl":"https://doi.org/10.23977/jemm.2023.080108","url":null,"abstract":"","PeriodicalId":32485,"journal":{"name":"Journal of Engineering Mechanics and Machinery","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68788834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.23977/jemm.2023.080304
L. Hai
: Large irregular thin-walled components such as aviation structural components and aerospace structural components have large size specifications, complex structures, multiple machining features, and high accuracy requirements. During the machining process, the workpiece is prone to deformation, and product inspection and quality control are extremely important. In the operation process of industrial robot processing systems, frequent replacement of end tools and various vibrations and collisions during processing can cause tool positions to shift. Therefore, before operating the processing system, it is necessary to implement reasonable calibration of the true position of the end tools of the robot to ensure that the processing system has the necessary positioning accuracy. The use of traditional methods for error calibration of sensors without considering the measurement and processing of sensor displacement information leads to large errors in nonlinear error calibration results and poor calibration results. In response to this issue, this article proposes a method of using laser displacement sensors to autonomously calibrate the robot tool coordinate system. The principle is simple, reliable, highly automated, and easy to implement. This method achieves synchronous movement of the laser displacement sensor and the digital height gauge by developing a synchronous measuring fixture device, and eliminates installation errors by using a two axis fine adjustment device.
{"title":"Research on a Machine Measurement Calibration Method Based on Laser Displacement Measurement","authors":"L. Hai","doi":"10.23977/jemm.2023.080304","DOIUrl":"https://doi.org/10.23977/jemm.2023.080304","url":null,"abstract":": Large irregular thin-walled components such as aviation structural components and aerospace structural components have large size specifications, complex structures, multiple machining features, and high accuracy requirements. During the machining process, the workpiece is prone to deformation, and product inspection and quality control are extremely important. In the operation process of industrial robot processing systems, frequent replacement of end tools and various vibrations and collisions during processing can cause tool positions to shift. Therefore, before operating the processing system, it is necessary to implement reasonable calibration of the true position of the end tools of the robot to ensure that the processing system has the necessary positioning accuracy. The use of traditional methods for error calibration of sensors without considering the measurement and processing of sensor displacement information leads to large errors in nonlinear error calibration results and poor calibration results. In response to this issue, this article proposes a method of using laser displacement sensors to autonomously calibrate the robot tool coordinate system. The principle is simple, reliable, highly automated, and easy to implement. This method achieves synchronous movement of the laser displacement sensor and the digital height gauge by developing a synchronous measuring fixture device, and eliminates installation errors by using a two axis fine adjustment device.","PeriodicalId":32485,"journal":{"name":"Journal of Engineering Mechanics and Machinery","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68788564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.23977/jemm.2023.080305
With the development of the times and technological progress, sensor measurement technology is also constantly developing. Mechatronics engineers are different from traditional mechatronics engineers. They utilize the manufacturing technology of mechatronics and the power of mechatronics engineers to stand at the forefront of the mechatronics technology revolution. New mechatronics engineers have been fully developed and gradually become mechatronics engineers. Today, the rise of mechanical Electronic engineering technology undoubtedly brings opportunities and challenges to sensor measurement systems. While replacing the technology and methods of old sensor measurement systems, it also brings important innovations. This paper mainly introduced the current situation, evolution and future prospects of mechanical and Electronic engineering technology, aiming at promoting its development and evolution, and discussed the application of mechanical and Electronic engineering technology in sensor measurement systems. Finally, the experimental analysis verified that the sensor measurement system based on mechanical Electronic engineering technology was 0.0785, 0.03%, less than 2um and less than 0.04% higher in sensitivity, linearity, return error and repeatability than the sensor measurement system with traditional technology, which showed the superiority of its overall performance.
{"title":"Application of Mechanical Electronic Engineering Technology in Sensor Measurement System","authors":"","doi":"10.23977/jemm.2023.080305","DOIUrl":"https://doi.org/10.23977/jemm.2023.080305","url":null,"abstract":"With the development of the times and technological progress, sensor measurement technology is also constantly developing. Mechatronics engineers are different from traditional mechatronics engineers. They utilize the manufacturing technology of mechatronics and the power of mechatronics engineers to stand at the forefront of the mechatronics technology revolution. New mechatronics engineers have been fully developed and gradually become mechatronics engineers. Today, the rise of mechanical Electronic engineering technology undoubtedly brings opportunities and challenges to sensor measurement systems. While replacing the technology and methods of old sensor measurement systems, it also brings important innovations. This paper mainly introduced the current situation, evolution and future prospects of mechanical and Electronic engineering technology, aiming at promoting its development and evolution, and discussed the application of mechanical and Electronic engineering technology in sensor measurement systems. Finally, the experimental analysis verified that the sensor measurement system based on mechanical Electronic engineering technology was 0.0785, 0.03%, less than 2um and less than 0.04% higher in sensitivity, linearity, return error and repeatability than the sensor measurement system with traditional technology, which showed the superiority of its overall performance.","PeriodicalId":32485,"journal":{"name":"Journal of Engineering Mechanics and Machinery","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135500738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.23977/jemm.2023.080402
Due to the special working condition of the tower crane, the high pile bearing system installed in the middle of the foundation pit should bear relatively large vertical load, horizontal force, bending moment and torque. The force situation is very complex. The research results show that the steel column is a compressive bending force member, and the most unfavorable working condition occurs in the stage, when the installation tower crane is put into use and the foundation pit has not been excavated.
{"title":"Research on the Force of Steel Column in Tower Crane High Pile Cap System","authors":"","doi":"10.23977/jemm.2023.080402","DOIUrl":"https://doi.org/10.23977/jemm.2023.080402","url":null,"abstract":"Due to the special working condition of the tower crane, the high pile bearing system installed in the middle of the foundation pit should bear relatively large vertical load, horizontal force, bending moment and torque. The force situation is very complex. The research results show that the steel column is a compressive bending force member, and the most unfavorable working condition occurs in the stage, when the installation tower crane is put into use and the foundation pit has not been excavated.","PeriodicalId":32485,"journal":{"name":"Journal of Engineering Mechanics and Machinery","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135650883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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