Intelligent CAD/CAE''s System of Motorcycle-design

Takes the motorcycle system design as the target , and researched motorcycle total scheme design and total layout design and kinetics matching optimization to design, KBE's technique , CAX's technique , PDM's technique and to target and so on technique is used in the synthesis , and intelligent CAD/CAE's system of the motorcycle system design work distance traveled by a stream of water and the architectural structure and integrated technique of every application sub system meritorous service capacity composition and CAD/CAE/CAT has been underway research, Open up a model system , and still unite the fund motorcycle produce development , and verifies.     

A PRACTICAL METHOD FOR SELECTING STEEL USING COMPUTER AIDED DESIGN(CAD)SYSTEM FOR REINFORCED CONCRETE FRAME

How to select automatically the disposition of steel bar in a computer aided design(CAD)system for reinforced concrete frame structure is aproblem relatedt ot he practicality and increasing capacity of the CAD system.This paper suggests a practical method for selecting steel bar of beam in framestructure with the application of knowledge and experience of the experts forreasoning and judging.The method is convenient for calculation.The results ofcalculation are in agreement with detailing requirement and usual engineeringpractice.The method has great practical value.     

Research on Independent Product Development for Concurrent Collaborative Environment & Supporting Technologies

This article deals with the research on the features and collaborative process of independent development of key automobile parts. It generally employed concurrent engineering theory and technologies of Internet & Intranet, computer aided design (CAD), computer aided manufacturing (CAM) and product data management (PDM). Field knowledge on independent development of key automobile parts was concluded and a set of concurrent collaborative environment and key enabling supporting technologies that face the independent development of automobile body panel dies were also built up. Meanwhile it introduced the secondary development methods of knowledge based engineering (KBE) to implement the knowledge transformation of designing and manufacturing experiences for an enterprise. The results was applied for the development & production of one of this enterprise's new automobile styles and work well.     

基于工作过程CAD/CAM工程技术应用课程教学改革实践

针对CAD/CAM工程技术应用的课程体系、理论课程教学内容、教学方法和实验课程教学进行了改革,成功地建立了CAD/CAM工程技术应用课程体系,取得了良好的教学效果。     

Solid Model Design on the Features of Products

To research the problem of plastic art design and emulation of products with the virtual reality technology can short the product development cycle and reduce the cost. This paper discusses the information based on the product feature ,solid model with parameters, the structure and function of this system. Combined the product properties with its solid model. Proposed a method with CAD to create the model of the product based on features in the product design. Expressed its feature parameter and shape of model fully .In the case for a deceleration box the feature model has solved the problem of physical information ,geometry information and the informative process in its production management system efficiently.     

Concurrent Design of the Petroleum Equipment CAD System

Military petroleum equipment is one of main logistical equipment. The characteristics and organization of the petroleum equipment are analyzed and the design flow chart and concurrent design frame of the petroleum equipment CAD system is built up . The CAD system includes three subsystems, which are engineering subsystem, management subsystem and supporting environmental system. A solid model, assembly structure and strength of oil tank in vehicle are analyzed by integrated CAD/CAE/CAM software I-DEAS. Through concurrent design environment, design efficiency and quality of petroleum equipment are greatly improved.     

A NEW METHOD FOR DESIGN OF PSS PARAMETERS

The eigenvalue sensitivity methods is very useful not only in analysis of electric power system stability but also in design of the controllers. In this paper a new optimal method is proposed to design the parameters of PSS. Using this method the PSS is designed for a single machine-infinite bus system, and the results of digital simulation show that this method is very effective and useful.     

Twisted Blade Virtual Design for Steam Turbine

Due to lack of estimation during initial stage of traditional physical design process for industry product, the efficiency of conduct development is low with high cost. A basic framework of twisted blade virtual design is set up based on the theory and method of product virtual design, and aiming at the thermodynamic process of middle or lower stage of steam turbine. The molding rule of twisted blade is found by thermodynamic computation program. The study of blade virtual design is carried through from 3-dimensional modeling to simulation test. The combination of thermal power theory, computer simulation technology and CAD system forms a kind of design method with the superiority such as high efficiency, low cost and good decidability is represented in the virtual design of turbine blade.     

Discussion on Interactive Method for CAD Drawing andCalculation in Building Water Supply and Drainage Design

According to the features of CAD for building water supply and drainage design,the interactive method for CAD calculation and drawing in building water supply and drainage engineering are discussed . A practical example of ADS for hydraulic calculation has been given in this paper .     

Design Method for the Individual Anatomical Hip Joint Endoprosthesis

A new design method for the individual hip joint endoprostheses is proposed. By picking up the contour lines from the femur's CT images and making them closed and smoothed, a solid model of the femur is reconstructed using the contour lines by CAD software. An individual anatomical hip joint endoprosthesis is designed with the inner contour curves of the medulla cavity in CAD software. Utilizing the APDL(ANSYS Parametric Design Language) and the CT value per pixel in the CT image for developing a program through which every element of the bone can get its own material property. The finite element model's anisotropy and inhomogeneity of bone material are realized, then the endoprosthesis and the femur-stem contact finite element model can be built in ANSYS. Based on this, calculation on the contact model can be processed. It is feasible to checkout the rationality of the design by comparing the stress distribution in the femur with the situation before replacement. And the results reveal that the method is more reasonable and reliable.     

Management for Design Iteration

A short Time-to-Market is an important means to win competitive advantage for enterprises. This paper describes some of the challenges that impede efforts to reduce development time for complex project. Many of challenges are related to "Design Iteration" that is discussed detailedly. A model of Design Structure Matrix is put forward. The "Design Iteration" can be identified clearly and definitely by DSM and the design management methods based DSM is beneficial to short new product development time.     

Discussion about the Landscape-superposition by Means of Isomorph-accumulation on Mountainous Landform

Based on the system science and by analyzing the landscape of "qian hu miao zhai" in Guizhou Province and a landscape project along Jialingjiang River in Chongqing, in this paper, to seek a design method for mountainous city landscape is investigated by creation of landscape-superposition through isomorph-accumulating on mountainous landform in order to provide a new approach for the design of distinctive landscape in mountainous cities.     

3-D Reinforcing CAD System of Hydropower Station Dam Passageway

By researching passageway, the features of passageway reinforcing design and draw are analyzed, and the mathematics model of orthogonal passageway and slant passageway are established. The method of applying CATIA V5 to hydro-structure is explored and a scheme of 3-D visual reinforcing CAD System is designed. It is proved by practice that the system is not only convenient to input parameter, but also to use universally. The system can use in design and researching of orthogonal passageway and slant passageway. It is very quick and easy that revise reinforcing bar of reinforcing drawing in construction.     

PROTOTYPE: A NEW MIXED PATTERN FOR KNOWLEDGE REPRESENTATION

In this paper, it is pointed out that some kind of mixed pattern for knowledge representation should be needed in CAD systems, and prototype is just one of this kind of pattern, which is most suitable to representing the relative design knowledge.The paper particularly elaborates the notion of prototype and introduces how to represent a design prototype.Operations on prototypes are also demonstrated in order to conceive the reasoning mechanism in a prototype-based design system.     

Planning Method of Ecological Embedded Industrial Parks

Exploration of the gentle slopes of low mountains and hills has already become a new topic in the development of urban land resources in hilly areas. For the high ecological sensitivity, tremendous cost of urban construction, as well as complicate utilization technology, planning and design of gentle slopes of low mountains and hills are faced with serious challenges. This paper took the planning of Yidu High-tech Industrial Park for example, to explore the design concepts and rational methods of planning "ecological embedded" industrial parks in hilly areas.     

Dynamic Data Exchange for Collaborative Design Based on Internet

The dynamic data exchange is the key to the realization of the collaborative design based on Internet. The features of data for collaborative design based on Internet are analyzed. The data transformation, the data transmission and the data transaction of collaborative design based on Internet are researched. The system configuration and organization mode of dynamic data exchange for collaborative design Internet-based are developed, in which, STEP serves as the product data exchange standard, and ORACLE is the kernel database of the system, so that each of the CAD systems can synchronously access the ORACLE database, share and exchange the design information. The STEP-ORACLE serves as the organizing mode of dynamic data exchange for the collaborative design based on Internet, which realizes the real-time exchange and consistency of the dynamic data between the different platforms and CAD systems.     

DEVELOPMENT OF COMPUTER AIDED PROCESS PLANNING SUBSYSTEM FOR A CAD/CAPP INTEGRATED SYSTEM

Based on Group Technology, a CAD/CAPP integrated system is developed. This paper mainly covers the research work of the CAPP subsystem. In this subsystem, geometric and manufacturing information is obtained from the CAD data base, modular block programming and full Chinese menu are adopted, process planning is produced with the semi-generative method, and process card involved the operation charts is yielded by printer. The operation is simple and convenient, and the performance is quick. The ? CAPP subsystem is successfully integrated with the CAD subsystem. The subsystem is an advanced CAPP system.     

Surface Reconstruction and Application Based on Shape Constraints

On the base of the fairing of free-form surface reconstruction from 3D data points, this paper probes one method based on shape constraints. By making physical model as objective function and using geometric constraints, free form surface reconstruction is realized based on the idea of energy optimization. This method is not only beneficial to the connection of the reconstruction surface and CAD/CAM system, but also to the integration of design, manufacturing and inspection.     

Design of Manufacturing System for Business

In the new environment, product development is the core of product innovation and quickly responsive to the market for the enterprises. The speed and effectiveness of development is the key factor to the success of product development. The design for business is the key technique in achieving the effectiveness of product development. And manufacturing system is the bridge between business and products. The design method of facing business is discussed, and the design flow and content of manufacturing system supporting facing business are pointed out. At the same time, the author also sets forth the construction definition, the construction design and the detailed design of the manufacturing system. So the design flow of manufacturing system facing business is established.     

Dynamic data exchange based on STEP-OODB for network-supported collaborative design

This paper analyzes the features of data for network-supported collaborative design, researches the data transformation, the data transmission and the data transaction of collaborative design. The system configuration and organization mode of dynamic data exchange for network-supported collaborative design are developed, in which, STEP serves as the product data exchange standard, what's more, Object-Oriented Database (OODB) is the kernel database of the system, so that each of the CAD systems can synchronously access the OODB, share and exchange the design information. The STEP-OODB serves as the organizing mode of dynamic data exchange for the network-supported collaborative design based on Internet, which realizes the real-time exchange and consistency of the dynamic data among the cross-platforms and CAD systems.