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Case-based intelligent computer aided design system of welding machinery 认领 引用
1
作者 林三宝 黎明 吴林 《China Welding》 EI CAS 1998年第1期4-9,共6页
The procedure during complex system plan design of welding position-locating machine is studied in this paper. The main difficulties in designing welding position-locating machine utilizing computer are discussed as w... The procedure during complex system plan design of welding position-locating machine is studied in this paper. The main difficulties in designing welding position-locating machine utilizing computer are discussed as well. A method of case-based intelligent CAD system for welding position-locating machine ( WMICAD) is put forward through wide research on design methodology. Object-oriented programming method is also applied to Ms system. The basic idea and realizing method are described. 展开更多
关键词 welding position-locating machine intelligent computer aided design plan design case-based reasoning
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Computer Aided Design and Performance Analysis of Inverse Fluidized Bed Biofilm Reactors with Special Reference to Bioplastic Synthesis 认领 引用
2
作者 C. M. Narayanan Shrijita Das 《Advances in Chemical Engineering and Science》 CAS 2016年第2期130-139,共10页
Poly Laevo Lactic Acid (PLLA), in spite of being an excellent bioplastic, has exorbitantly high market price due to the high cost of raw material (lactose, glucose, sucrose). Hence, its manufacture is being attempted ... Poly Laevo Lactic Acid (PLLA), in spite of being an excellent bioplastic, has exorbitantly high market price due to the high cost of raw material (lactose, glucose, sucrose). Hence, its manufacture is being attempted starting from waste effluents such as cheese whey and molasses. Earlier studies on the same in fluidized bed and semifluidized bed biofilm reactors yielded encouraging results. The present study therefore involves design and analysis of inverse fluidized bed biofilm reactors for lactic acid synthesis. The performance features of the bioreactor have been studied both mathematically as well as experimentally. The inverse fluidized bed biofilm reactor has been found to provide more than 75% conversion of sucrose/lactose even at high capacities (high feed flow rates) exceeding 56,000 L/hr, within a reasonably low reactor volume. The fractional substrate conversion increases, though sluggishly, with increase in feed flow rate due to bed expansion and also with increase in cell mass concentration in biofilm due to enhancement in intrinsic rate of bioconversion. The inverse fluidized bed biofilm reactor of proposed design could be safely recommended for the commercial synthesis of polymer grade lactic acid from waste effluents such as cheese whey and molasses. The low operating cost of the bioreactor (due to downflow mode of operation) enhances the economy of the process. This would also help in significantly lowering the market price of the green plastic (PLLA) and shall promote its large scale manufacture and utilisation. 展开更多
关键词 Inverse Fluidized Bed Biofilm Reactors Computer Aided Design Bioplastics Lactic Acid Synthesis Software Development
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The Implementation Methods for Computer Aided Design and Analysis on Color-Woven Fabrics 认领 引用
3
作者 Dong Yude1, 2 Zhao Han2 Sun Jieting3 1. University of Science and Technology of China, Hefei 230052, China 2. HeFei University of Technology, Hefei 230009, China 3. AnHui Vocational Institute of Textile , Hefei, 230052, China 《Computer Aided Drafting,Design and Manufacturing》 2002年第1期8-17,共10页
Methods for computer aided design and analysis on color-woven fabrics are presented. The relation of color pattern, colored warp, colored weft and the model for regular weave texture are given based on their formative... Methods for computer aided design and analysis on color-woven fabrics are presented. The relation of color pattern, colored warp, colored weft and the model for regular weave texture are given based on their formative principle. Some efficient algorithms are developed to determine the color order of warp and weft threads which yields a given color pattern and regular weave texture. Finally, the design system structure and data process flowing are introduced. 展开更多
关键词 weave texture recombine texture double-texture color pattern analysis computer aided design
全文增补中
COMPUTER AIDED DESIGN OF AIRCRAFT CABIN LAYOUT 认领 引用 被引量：1
4
作者 Yang Guong Huang Yuyu P.R.China Wang Jiening P.R.China 《Computer Aided Drafting,Design and Manufacturing》 1996年第2期83-89,共7页
The reasonability of cabin layout is studied according to the ergonomic theory on micro-computer. This system includes the anthropometric model,modeling of aircraft seats and cabin,interactive ergonomic analyses on ef... The reasonability of cabin layout is studied according to the ergonomic theory on micro-computer. This system includes the anthropometric model,modeling of aircraft seats and cabin,interactive ergonomic analyses on effect. 展开更多
关键词 ss:computer aided industrial design ergonomics anthropometric model
全文增补中
Computer Aided Design System for Developing Musical Fountain Programs 认领 引用 被引量：2
5
作者 刘丹 张乃尧 朱汉城 《Tsinghua Science and Technology》 EI CAS 2003年第5期612-616,共5页
A computer aided design system for developing musical fountain programs was developed with multiple functions such as intelligent design, 3-D animation, manual modification and synchronized motion to make the developm... A computer aided design system for developing musical fountain programs was developed with multiple functions such as intelligent design, 3-D animation, manual modification and synchronized motion to make the development process more efficient. The system first analyzed the music form and sentiment using many basic features of the music to select a basic fountain program. Then, this program is simulated with 3-D animation and modified manually to achieve the desired results. Finally, the program is transformed to a computer control program to control the musical fountain in time with the music. A prototype system for the musical fountain was also developed. It was tested with many styles of music and users were quite satisfied with its performance. By integrating various functions, the proposed computer aided design system for developing musical fountain programs greatly simplified the design of the musical fountain programs. 展开更多
关键词 musical fountains musical instrument digital interface (MIDI) computer aided design (CAD) fuzzy expert systems
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DESIGN OBJECT MODEL AND DESIGN PROCESS MODEL OF COMPUTER AIDED AIRCRAFT CONCEPTUAL DESIGN SYSTEM 认领 引用
6
作者 Shen Zhang 《Chinese Journal of Aeronautics》 CAS 1995年第3期198-204,共7页
DESIGNOBJECTMODELANDDESIGNPROCESSMODELOFCOMPUTERAIDEDAIRCRAFTCONCEPTUALDESIGNSYSTEMShenZhang（AircraftCADResearchCenter，Beijin...
关键词 computer aided design aircraft design models
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THE APPLICATION OF THE COMPUTER AIDED ANALYSIS IN THE DESIGN OF COALMINE MACHINERY LINKAGES 认领 引用
7
作者 寇子明 许步勤 沈现军 《Journal of Coal Science & Engineering(China)》 1996年第1期98-104,共7页
This paper gives and verifies a mathematical model with only one argument which determines the movement parameters of any point in a plane four-bar linkage on the basis of the analysis of mining machinery linkages. C ... This paper gives and verifies a mathematical model with only one argument which determines the movement parameters of any point in a plane four-bar linkage on the basis of the analysis of mining machinery linkages. C A A (computer aided analysis) based on the mathemetical model can be used to make not only the quick and accurate analysis and design of mining machinery linkages but also the movement analysis and optimization design of any other plane four-bar linkage. 展开更多
关键词 linkage mechanism mathematical model computer aided design mining machinery
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Meditation on 2D and 3D Approach in Computer Aided Shape Design 认领 引用
8
《Computer Aided Drafting,Design and Manufacturing》 2000年第2期45-49,共5页
关键词 Meditation on 2D and 3D Approach in Computer Aided Shape Design AEC CAD
全文增补中
Implementation of a Sketch Based Approach to Conceptual Aircraft Design Synthesis and Modeling 认领 引用 被引量：9
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作者 刘虎 武哲 +1 位作者 王钢林 王新林 《Chinese Journal of Aeronautics》 EI CAS 2004年第4期207-214,共8页
In the context of applying computer aided design tools to aircraft conceptualdesign, a sketch based approach is proposed to help designers turn their original concepts intocomplex numerical models that are usable for ... In the context of applying computer aided design tools to aircraft conceptualdesign, a sketch based approach is proposed to help designers turn their original concepts intocomplex numerical models that are usable for further analysis and optimization. This approachemphasizes the integration of general configuration and the layout of such components as engines,payloads, fuel tanks and landing gears, and the representation of a design scheme as uniform planesketches and three dimensional models. This paper presents the measures adopted to implement theapproach in a prototype system, including the object-oriented data structure, friendly graphicaluser interfaces and basic features of relevant modules. Several examples generated in the prototypeand applications of the results are finally outlined to illustrate the effectiveness of theapproach. 展开更多
关键词 aircraft conceptual design sketch geometric modeling computer aided design
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Application and development of case-based reasoning in fixture design 认领 引用 被引量：6
10
作者 王琪 廖文和 《Journal of Southeast University(English Edition)》 EI CAS 2004年第2期170-175,共6页
Based on the case-based designing (CBD), it is presented that the similarity of the fixtures is described by the fixture information of workpiece and the structure information of feature. Then, the computer-aided fixt... Based on the case-based designing (CBD), it is presented that the similarity of the fixtures is described by the fixture information of workpiece and the structure information of feature. Then, the computer-aided fixture design system is created on case-based reasoning (CBR), in which the attributes information of the main features of workpiece and structure of fixture as case index code are designed for the retrieve of the similar cases, and the structure and hierarchical relation of case library are set up for store. Meanwhile, the algorithm based on the knowledge-guided in the retrieve of the similar cases, the strategy of case adaptation and case storage in which the case identification number is used to distinguish from similar cases are presented. The application of the system in some projects improves the design efficiency and gets a good result. 展开更多
关键词 Algorithms Computer aided design Flowcharting
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Environment of Design Requirements Input and Preliminary Sizing for Aircraft Conceptual Design 认领 引用 被引量：3
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作者 刘虎 武哲 《Chinese Journal of Aeronautics》 EI CAS 2003年第1期15-21,共7页
To supply a convenient and expandable tool to organize the designrequirements of a new aircraft and estimate its basic design parameters during conceptual design,the Environment of Design Requirements Input and Prelim... To supply a convenient and expandable tool to organize the designrequirements of a new aircraft and estimate its basic design parameters during conceptual design,the Environment of Design Requirements Input and Preliminary Sizing (EDRIPS) was developed. In thisenvironment, the performance requirements, mission profile and payloads could be inputted orselected respectively through user-friendly interfaces in a highly interactive way. Based on theserequirements, it enables the designer to pick up a design point in the solution space throughconstraint analysis, and then conduct mission analysis either step by step or via auto iteration byusing an improved method for estimating the takeoff weight. The implementation of each module andthe methods utilized are described. A design example is finally presented and analyzed to validatethe efficiency and reliability of applying EDRIPS to aircraft conceptual design. 展开更多
关键词 aircraft design design requirements constraint analysis mission analysis computer aided design
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Design and optimization of solid rocket motor Finocyl grain using simulated annealing 认领 引用 被引量：4
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作者 All Kamran LIANG Guo-zhu 《航空动力学报》 EI CAS CSCD 北大核心 2011年第4期917-923,共7页
The research effort outlined the application of a computer aided design(CAD)-centric technique to the design and optimization of solid rocket motor Finocyl(fin in cylinder) grain using simulated annealing.The proper m... The research effort outlined the application of a computer aided design(CAD)-centric technique to the design and optimization of solid rocket motor Finocyl(fin in cylinder) grain using simulated annealing.The proper method for constructing the grain configuration model,ballistic performance and optimizer integration for analysis was presented.Finocyl is a complex grain configuration,requiring thirteen variables to define the geometry.The large number of variables not only complicates the geometrical construction but also optimization process.CAD representation encapsulates all of the geometric entities pertinent to the grain design in a parametric way,allowing manipulation of grain entity(web),performing regression and automating geometrical data calculations.Robustness to avoid local minima and efficient capacity to explore design space makes simulated annealing an attractive choice as optimizer.It is demonstrated with a constrained optimization of Finocyl grain geometry for homogeneous,isotropic propellant,uniform regression,and a quasi-steady,bulk mode internal ballistics model that maximizes average thrust for required deviations from neutrality. 展开更多
关键词 solid rocket motor Finocyl(fin in cylinder) grain internal ballistics simulated annealing computer aided design
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VIRTUAL FUEL-PUMP DESIGN 认领 引用 被引量：1
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作者 Jiang Zuhua Yan Junqi School of Mechanical Engineering,Shanghai Jiaotong University,Shanghai 200030,China 《Chinese Journal of Mechanical Engineering》 EI CAS 2002年第1期94-96,共3页
Some concepts of virtual product are discussed. The key technologies ofvirtual fuel-pump development are in detail analysed, which include virtual fuel-pump productmodeling, intelligent simulation, distributed design ... Some concepts of virtual product are discussed. The key technologies ofvirtual fuel-pump development are in detail analysed, which include virtual fuel-pump productmodeling, intelligent simulation, distributed design environment, and virtual assembly. The virtualfuel-pump development prototype system considers requirement analysis, concept design, injectionpreferment analysis, detailed design, and assembly analysis. 展开更多
关键词 Virtual product development Simulation Computer aided design (CAD)
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Designing the Instrument Crank-Coupler Mechanism of Linear Output with Least Transmission Ratio Error 认领 引用
14
作者 裘建新 赵爱华 《Journal of Donghua University(English Edition)》 EI CAS 2004年第4期46-51,共6页
Movement accuracy is the key factor to be considered in designing precision instrument linkage and mini-linkage mechanisms. Although manufacturing errors, elastic deformation, kinematic pair clearance and friction fac... Movement accuracy is the key factor to be considered in designing precision instrument linkage and mini-linkage mechanisms. Although manufacturing errors, elastic deformation, kinematic pair clearance and friction factors all will have synthesis effect on the position accuracy of the mechanical system, the essential factor to guarantee the movement precision remains the kinematic dimensions. Combining the classical theory of mechanical synthesis with the modern error theory and the numerical method, the authors put forward a systematic and complete process and method of computer aided design for the instrument crank-coupler mechanism in which the follower takes the linear displacement approximately within a certain limited domain, with the design result of least transmission ratio error. 展开更多
关键词 crank-coupler mechanism linear displacement transmission ratio error computer aided design.
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AN APPROACH TO FEATURE-BASED PARAMETRIC DESIGN FOR DIE AND MOULD 认领 引用
15
作者 翟建军 陈文亮 +1 位作者 黄翔 陈普仁 《Transactions of Nanjing University of Aeronautics and Astronautics》 1995年第2期168-171,共4页
An approach to feature-based parametric design for die and mould is proposed in this paper.The assembly relationship and parts of the die and mould are described by feature.The dependent relationship of features is de... An approach to feature-based parametric design for die and mould is proposed in this paper.The assembly relationship and parts of the die and mould are described by feature.The dependent relationship of features is described by parent-child operator structure.The feature shape and location can be modified by design parameters.An expert system is used for deriving a geometry of the features which satisfies the given constraints.This approach provides a more natural and convenient method of representing a parametric model of the die and mould. 展开更多
关键词 features expert systems computer aided design parametric design parent-child operator
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Design and Optimization of 3D Radial Slot Grain Configuration 认领 引用 被引量：5
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作者 Ali Kamran Liang Guozhu 《Chinese Journal of Aeronautics》 SCIE EI CAS 2010年第4期409-414,共6页
Upper stage solid rocket motors(SRMS)for launch vehicles require a highly efficient propulsion system.Grain design proves to be vital in terms of minimizing inert mass by adopting a high volumetric efficiency with min... Upper stage solid rocket motors(SRMS)for launch vehicles require a highly efficient propulsion system.Grain design proves to be vital in terms of minimizing inert mass by adopting a high volumetric efficiency with minimum possible sliver.In this arti-cle,a methodology has been presented for designing three-dimensional(3D)grain configuration of radial slot for upper stage solid rocket motors.The design process involves parametric modeling of the geometry in computer aided design(CAD)software through dynamic variables that define the complex configuration.Grain bum back is achieved by making new surfaces at each web increment and calculating geometrical properties at each step.Geometrical calculations are based on volume and change-in-volume calculations.Equilibrium pressure method is used to calculate the internal ballistics.Genetic algorithm(GA)has been used as the optimizer because of its robustness and efficient capacity to explore the design space for global optimum solution and eliminate the requirement of an initial guess.Average thrust maximization under design constraints is the objective function. 展开更多
关键词 solid rocket motors 3D grains radial slot configuration internal ballistics computer aided design heuristic optimization genetic algorithm
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Study of Piezoresistive Micro Electro-Mechanical Accelerometer Design Platform 认领 引用
17
作者 ZHANG Jing-hua SHI Geng-chen 《Journal of Beijing Institute of Technology》 EI CAS 2005年第3期289-292,共4页
According to the inland micro electro-mechanical system(MEMS)process technique level,a design platform of piezoresistive micro electro-mechanical accelerometer is given.This platform is much more adaptable to the inla... According to the inland micro electro-mechanical system(MEMS)process technique level,a design platform of piezoresistive micro electro-mechanical accelerometer is given.This platform is much more adaptable to the inland designer compared with the current MEMS CAD software.The design flow is presented in detail,and the key techique in the platform is analyzed amply.The structure design methodology is exemplified in the design of a piezoresistive accelerometer,and the accelerometer is the optimized structure for the given performance requirements.The accelerometer is now being manufactured. 展开更多
关键词 micro electro-mechanical system sensor computer aided design
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Network Garment Style Design System with Remote Information Access and Auto-Connecting Technology 认领 引用
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作者 钱素琴 董爱华 《Journal of Donghua University(English Edition)》 EI CAS 2007年第1期112-117,共6页
A Network Garment Style Design System (NGSDS) is proposed to enable the remote style structure drawing design of garment. After the development of the system structure based on network that consists of client end and ... A Network Garment Style Design System (NGSDS) is proposed to enable the remote style structure drawing design of garment. After the development of the system structure based on network that consists of client end and server end at two remote places, a multi-layer part database based on Oracle platform is presented to store information of different parts of garment style. With the acquirement of remote design data at server end using Http technology, the style design is ultimately implemented at the client end using Auto-connecting algorithms. One empirical example is given to show the implementation of the NGSDS. 展开更多
关键词 Computer Aided Garment Design （CAGD） Network Garment Style Design System （NGSDS） remoteinformation access auto-connecting technology.
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OPTIMIZATION DESIGN OF HELICOPTER FOR PRELIMINARY PARAMETERS 认领 引用
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作者 Guo Caigen 《Chinese Journal of Aeronautics》 CAS 1994年第3期175-182,共8页
A new design method for prehminary parameters is proposed. The analyticmodels of the optimization design are established according to the requirements of helicopter flight performance- stability, engine and weight. Th... A new design method for prehminary parameters is proposed. The analyticmodels of the optimization design are established according to the requirements of helicopter flight performance- stability, engine and weight. The optinial preliminary projectof design to meet the requirements of critenon for helicopter design is worked out byapplying the computer and optimization techniques. The inethod can be used for theanalysis of helicopters for prehminary parameters that are used in practice and for theanalysis of sensibility for preliminary parameters, too. The method is shown to be veryuseful by the example and application in the new design of helicopters. 展开更多
关键词 helicopters optimization design computer aided design
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Object-Oriented Design for FDTD Visual Scientific Computing 认领 引用
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作者 Dong, X. Wang, W. Wang, G. 《Journal of Systems Engineering and Electronics》 EI 2001年第3期71-75,共5页
A scheme for general purposed FDTD visual scientific computing software is introduced in this paper using object-oriented design (OOD) method. By abstracting the parameters of FDTD grids to an individual class and sep... A scheme for general purposed FDTD visual scientific computing software is introduced in this paper using object-oriented design (OOD) method. By abstracting the parameters of FDTD grids to an individual class and separating from the iteration procedure, the visual software can be adapted to more comprehensive computing problems. Real-time gray degree graphic and wave curve of the results can be achieved using DirectX technique. The special difference equation and data structure in dispersive medium are considered, and the peculiarity of parameters in perfectly matched layer are also discussed. 展开更多
关键词 Computational methods Computer aided design Data structures Difference equations Finite difference method Iterative methods Natural sciences computing Object oriented programming Parameter estimation Three dimensional computer graphics Time domain analysis
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