Reform of the Comprehensive Practical Course System for Mechanical and Electronic Engineering Majors Under the Background of New Engineering

Under the background of new engineering,the reform of the comprehensive practical course system for mechanical and electronic engineering majors actively responds to the challenges posed by the new round of technological revolution and industrial transformation to higher education,cultivating top-notch innovative intellectuals with comprehensive engineering qualities,meeting the requirements of being able to solve complex engineering problems rather than just cognitive capabilities,forming two core courses through reconstructing and reshaping the core courses of the major.The core courses include Drive,Measurement,and Control I and Drive,Measurement,and Control II,which highlight the comprehensive framework of mechanical and electronic engineering professional knowledge,continuing the comprehensive practical course system based on the unity of knowledge and practice,following the trend of new engineering,highlighting the practicality of professional innovation,assisting engineering education reform,and promoting high-quality development of new engineering professionals cultivation.

Application Strategies of BIM Technology in Highway Electromechanical Engineering

The transportation system is vital for social and economic development.With the rapid economic development,the demand for highways has been increasing.Mechanical and electrical engineering is a crucial part of highway construction,affecting the expressway’s later use.Applying building information modeling(BIM)technology in highway electromechanical engineering allows for the visibility and simulation of mechanical and electrical engineering construction,providing scientific guidance for construction.In this research,the author analyzes the advantages of BIM technology in highway electromechanical engineering and the basic composition of electromechanical engineering.The research proposes strategies and cases for applying BIM technology in highway electromechanical engineering.The ultimate goal of this research is to improve the construction of highways in terms of electromechanical engineering.

Review of Power Supply and Distribution Construction Technology for Highway Electromechanical Engineering

In recent years,China has made significant progress in the construction of highways,resulting in an improved highway network that has provided robust support for economic and social development.However,the rapid expansion of highway construction,power supply,and distribution has led to several challenges in mechanical and electrical engineering technology.Ensuring the safe,stable,and cost-effective operation of the power supply and distribution system to meet the diverse requirements of highway operations has become a pressing issue.This article takes an example of a highway electromechanical engineering power supply and distribution construction project to provide insight into the construction process of highway electromechanical engineering power supply and distribution technology.

Reform and Reconstitution of Core Courses in Mechanical and Electronic Engineering Under the Background of New Engineering

With the arrival of the intelligence era of Industry 4.0,social development has shown complex and diversified characteristics,gradually forming an innovation ecological environment constructed by vertical interaction of multi-layer innovation systems and horizontal collaboration of multiple organizations and departments,which has posed extremely challenging requirements for higher engineering education to cultivate engineering talents with comprehensive engineering qualities who can solve complex engineering problems.However,practical engineering problems may involve a complex knowledge chain of interdisciplinary and multi-disciplinary cross-coupling.Therefore,higher engineering education needs to form a new interdisciplinary and multi-disciplinary integrated engineering innovation talent training system.Based on the characteristics of the mechanical and electronic engineering major,we will reshape and reconstruct the core courses of the mechanical and electronic engineering major.Two core courses are formed:Drive and Measurement and Control I and Drive and Measurement and Control II,with information flow and energy flow as the main lines,following up with the comprehensive practical curriculum system based on the unity of knowledge and practice and ability-oriented thinking,supporting teaching objectives,promoting students’individual development,and providing guidelines for relevant curriculum reforms.

Teaching Experiment in Engineering Mechanics Based on Simulation Technology:A Case Study

This paper explores the integration of simulation technology in Engineering Mechanics(EM)teaching in vocational colleges.A case study was conducted using the tensile test as an example,and digital resources,such as colored Mises stress nephograms,were obtained.These resources were integrated into the original curriculum to conduct teaching experiments.The results show that the use of digital resources significantly improved the quality of teaching in EM.The integration of simulation technology in EM teaching provides a promising direction for the improvement of vocational education and the cultivation of high-quality skilled talents.The development and application of more simulation-based teaching cases should be studied by scholars.

Contents and Abstracts of Journal of Mechanical Engineering ISSN 0577-6686,CN 11-2187/TH

Cooperative Reconfiguration for a Reconfigurable Mobile Robot LIU Tonglin, WU Chengdong, LI Bin, LIU Jinguo （1. State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China; 2. Graduate School, Chinese Academy of Sciences, Beijing 100049, China; 3. School of Information Science ＆ Engineering, Northeast University, Shenyang 110004, China）Abstract： A main characteristic of the reconfigurable mobile robot AMOEBA-1 is that it has diverse configurations, but some reconfigurations are difficult to realize under the influence of ground conditions. A cooperative reconfiguration method is proposed to reduce reconfiguration resistance and enhance the adaptability of the robot to the environment. The mathematical model is established correspondingly. The kinematics and mechanical properties of each section of the robot are analyzed. A part of resistance is transformed into active force of reconfiguration, and transforms are actualized among five specific configurations. Further, the linearization of model based on a perturbation analysis method is used to reduce the computational complexity. Finally, an evaluation criterion is proposed for AMOEBA-I＇s cooperative reconfiguration performance. The validity of the cooperative reconfiguration method is proved by simulations and experiments.

Application of Parametric Design to Mechanical Engineering

The definition and functions of parametric design were introduced. According to the practical condition of mechanical engineering design, the necessity and feasibility of parametric design for complex mechanical engineering design was analyzed. The related key technologies and methods were also discussed by a project example based on Inventor platform.

Contents and Abstracts of Chinese Journal of Mechanical Engineering(Chinese Edition),ISSN 0577-6686,CN 11-2187/TH

Vol.44,No.3,2008 Investigation into Mechanism of Initial Rail Corrugation Formation at a Curved Track JIN Xuesong WEN Zefeng XIAO Xinbiao (Traction Power State Key Laboratory,Southwest Jiaotong University, Chengdu 610031,China) The mechanism of initial rail corrugation formation at a curved track is analyzed with a numerical method.The numerical method consid- ers a combination of a coupling dynamic model of a half railway vehicle and a finite length curved track, Kalker′s theory of three-dimensional elastic bodies in rolling contact,and a material wear model,The Hertzian contact non-linear spring with a unilateral restrain and the non-linear tan- gent creep-force model by SHEN-Elkins-Hydrick are used to couple the vehicle model with the track model.Through the detailed analysis on the dynamic behavior of the vehicle curving and the transient contact geome- try of the wheelset and track,the normal forces,the creepases,the contact point positions,and the contact geometry parameters of the wheels and the rails are obtained.According to the known numerical results the

Contents and Abstracts of Chinese Journal of Mechanical Engineering(Chinese Edition),ISSN 0577-6686,CN 11-2187/TH Vol.44,No.5,2008

Vol.44,No.3,2008 Investigation into Mechanism of Initial Rail Corrugation Formation at a Curved Track JIN Xuesong WEN Zefeng XIAO Xinbiao (Traction Power State Key Laboratory,Southwest Jiaotong University, Chengdu 610031,China) The mechanism of initial rail corrugation formation at a curved track is analyzed with a numerical method.The numerical method consid- ers a combination of a coupling dynamic model of a half railway vehicle and a finite length curved track, Kalker′s theory of three-dimensional elastic bodies in rolling contact,and a material wear model,The Hertzian contact non-linear spring with a unilateral restrain and the non-linear tan- gent creep-force model by SHEN-Elkins-Hydrick are used to couple the vehicle model with the track model.Through the detailed analysis on the dynamic behavior of the vehicle curving and the transient contact geome- try of the wheelset and track,the normal forces,the creepases,the contact point positions,and the contact geometry parameters of the wheels and the rails are obtained.According to the known numerical results the rolling

Contents and Abstracts of Journal of Mechanical Engineering ISSN 0577-6686, CN 11-2187/TH

Research on Categorizing Innovation of Speed Reducers,Optimization Algorithm for Robotic Belt Surface Grinding Process,Design and Viscoelasticity Dynamics Modeling of Flexible Driven Unit for Robot＇s Joint

Contents and Abstracts of Journal of Mechanical Engineering ISSN 0577-6686,CN 11-2187/TH

Review on Key Technology of Hydrodynamic and Hydrostatic High-frequency Motor Spindles XIONG Wanli YANG Xuebing LV Lang YUAN Julong （National Research Center for High Efficiency Grinding, Hunan University, Changsha 410082, China） Abstract： High-speed spindles supported by hydrodynamic and hydrostatic hybrid bearings are widely applied in the field of high-speed precision machine tools due to highrotation accuracy, high dynamic stiffness, high vibration damping and long life. But some technical problems caused by integrated structure and high speed, including temperature rise control and motor performance optimization, are yet to be resolved when the integration of hybrid bearings and motor are developed to meet the requirements of ultra-high speed and ultra-precision machining Also major scientific problems involved in the dynamic and thermal characteristics of hybrid journal bearings and the mechanism of electromagnetic losses of high-frequency motor are to be further studied.

Contents and Abstracts of Chinese Journal of Mechanical Engineering (Chinese Edition),ISSN 0577-6686,CN 11-2187/TH

Vol.43,No.7,2007 NOVEL RECOATING PROCESS WITH DYNAMIC OPTIMIZED BLADE SPEED XU Guangshen ZHAO Wanhua LU Bingheng (1.Department of Mechanical Engineering, Xi’an Polytechnic University,Xi’an 710048,China; 2.Institute of Advanced Manufacturing Technology, Xi’an Jiaotong University,Xi’an 710049,China) In order to improve the recoating quality of piston recoating system and resolve the problem that resin layer thickness increases with the height of object during building process in high-resolution stereolitho- graphy system,a novel recoating process whose blade speed is dynami- cally optimized during building process is proposed.Experiments are carried out to investigate the influence of blade speed and object height on the thickness of resin layer.The mathematical model describing the rela- tionship of recoating layer thickness with object height and blade speed is

Contents and Abstracts of Chinese Journal of Mechanical Engineering(Chinese Edition),ISSN 0577-6686,CN 11-2187/TH

Method of Conceptual Design of Mechanic Product Driven by Generalized Performance WEI Zhe TAN Jianrong FENG Yixiong (State Key Laboratory of CAD&CG,Zhejiang University, Hangzhou 310027,China) Generalized performance of product is used as an effective tool to drive the whole process of conceptual design of mechanical product. Generalized performance of product is defined by utilizing the deduction of axiom of"object structure"which is combined with"P-E"system.And

《机械工程学报》和《CHINESE JOURNAL OF MECHANICAL ENGINEERING》刊名译名更改启事

《机械工程学报》和《CHINESE JOURNAL OF MECHANICAL ENGINEERING》两刊刊号不同,内容不重复,使用的文种不同,但由于两刊的英文刊名相同,在国际交流和检索时区分困难。

Contents and Abstracts of Chinese Journal of Mechanical Engineering (Chinese Edition),ISSN 0577-6686,CN 11-2187/TH(Vol.43,No.11,2007)

SOME BASIC CONCEPTS IN MODERN DESIGN THEORY XIE Youbai(1.School of Mechanical Engineering,Shanghai Jiaotong University, Shanghai 200030,China; 2.School of Mechanical Engineering,Xi’an Jiaotong University, Xi’an 710049,China) Abstract:In the long march of development of design theories,many terms have been coined for explaining their new ideas.Some times one term is used by different authors with different definitions or different means,say concepts. Other times different terms are used by different authors with the same mean or concept.It is rational and necessary for the modem design theory in the

Contents and Abstracts of Chinese Journal of Mechanical Engineering (Chinese Edition),ISSN 0577-6686,CN 11-2187/TH Vol. 43,No. 5,2007

EMBEDDED-BASED NETWORK NUMERICAL CONTROL TECHNOLOGY AND SYSTEM ZHOU Zude LONG Yihong LIU Quan (Hubei Digital Manufacturing Key Laboratory, Wuhan University of Technology, Wuhan 430070, China) 1 Abstract:It is indicated that the general-purposed PC-based numerical control (NC) technology suffers from a number of problems, such as mis-match between system resources and application needs, unsuitability of the operating system to real-time control, lack of self-owned