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Issue 6 ， 1995
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Application of CAD/CAE Technology in Changchun Institute of Optics and Fine Mechanics
Abstract：This paper deals with the application,development,exchange and personel training in CAD/CAE technology in Changchun Institute of Optics and fine Mechanics.It is also shown that great potential and effect have been made by CAD/CAE technology as the first productive power.Keywords：CAD;CAE;Application;Development;Exchange- 35
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Published：2020-08-12 -
Conciseness of Reliability Analysis
Abstract：This paper describes the software Viable. It includes mainly integrated design process environment、hierarchical system reliability analysis、accurate reliability analysis early in theprocess, etc.Keywords：eliability;MTBF(Mean-Time-Between-Failure)- 26
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Published：2020-08-12 -
An Outline of CAD on Plastical Injection Dies &Mould
Abstract：The application of CAD in plastical dies &mould industry is narrated in brief.The basic content and requirement of CAD on plastical injection dies and mould is shown in this paper,the applying strategies of CAD on plastical dies and mould are also mentioned.- 43
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Published：2020-08-12 -
Handling Method of Sketch Constraint in CAD Modeling
Abstract：The function of sketch which is suitable for engineering designer to use in CAD technology has been introduced in this paper,The concept of sketch constraint has beendescribed emphatically. The types and the handling method of dimension constraint andgeometric constraint have been analysed and researched.Keywords：Sketch;Dimension constraint;Geometric constraint- 39
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Published：2020-08-12 -
Application or Hybrid Modeling Technology in Designing of Optical Instrument Parts
Abstract：A new CAD technology-hybrid modeling was stated.The architecture,function andfeatures of UGV 10.5 hybrid modeling system were introduced.The procedure of modeling apart of optical instrument illustrated that the hybrid modeling system perfect integrated theparametric modeling and the direct modeling.Keywords：Hybrid modeling;Sketch;Dimension drive;Parametric modeling;Feature;Direct modeling- 37
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Published：2020-08-12 -
Design of Television Camera Lens Operating in 20-700nm Band
Abstract：This paper expounds the technology requirements of television camera lens with performance of transmitting that combines ultraviolet and visible light,and provides the design results of the lens in optics and mechanics system,and gives quality analysis.Keywords：Lens;Aberration;Ultraviolet wave band- 25
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Published：2020-08-12 -
Engineering Analysis,Error Veluation and Control with FEM
Abstract：It is described that how to assess the engineering analysis error caused by FEA modeling and the way of error control is also depicted in this paper.Keywords：FEM;Error evaluation- 44
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Published：2020-08-12 -
Fem and Experiment or Piezoelectric Micromotors
Abstract：The piezoelectric micromotor is a new project in the field of Micro Electro Mechanical Systems,In this paper,FFM of the piezoelectric micromotor has been conducted in dynamicsin order to get some important results such as resonance frequencies, shearing force on thestator surface,etc.. The experiment of the piezoelectric micromotor has also been carriedout so that the FEM results of the piezoelectric micromotor has been proved.This has laid asolid foundation for the piezoelectric micromotor optimum design.Keywords：MEMS;Piezoelectric micromotor;FEM- 36
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Published：2020-08-12 -
Finite-Element Analsis of the Mechanical Stress of Skiving Carbide Hob
Abstract：A new way to understand the mechanical characteristics of skiving carbide hob by using a finite-element analysis is presented. First the distribution of the stress and the stain iscalculated by a finite-element method(FEM)code,and the reasons against the hob broken depending on this way are told.The conclusion is obtained by quantitative analysis that themechanical stress of the lattest skiving carbide hob is less than the one of the commonskiving carbide hob when skiving the gears at last.It expresses the design of the lattestskiving carbide hob is stiperior. The way provides scientific basis for using and popularizingthe lattest skiving carbide hob.Keywords：Mechanical stress;Finite-element;Skiving carbide hob- 43
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Published：2020-08-12 -
Natural Frequency Characteristics or the Nanopositioning x-y Stage
Abstract：The natural frequency characteristics of the nanopositioning stage was analized anddiscussed using theoretical and experimental methods.Keywords：Nanopositioning;X-Y stage;Natural frequency characteristics- 25
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Published：2020-08-12 -
Numerical Approach on Pressure Distribution of Multi-Wedge Journal Bearing
Abstract：Computing pressure distribution is the base of analyzing and calculating various performances of bearing. On the basis of analysis on profile geometry,a numerical method of computing the pressure distribution of bearing is described in consideration of its stucture form.Keywords：Multi-wedge journal bearing;Pressure distribution;Numerical approach- 39
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Published：2020-08-12 -
Selection of Substratum Shapes of Spherical Primary Reflection Mirrors
Abstract：It's pointed out that the performances of primary reflection mirrors couldn't be provedby their mass or deformation,It's supposed for them to be lightweight and little deformed while under loads.Natural frequencies of mirrors in some shapes,double-arch,double-concave,Single-arch and plain-rear,are calculated in Finite Element Method,which areused to determine if the mirrors meet their structural stiffness.Keywords：Primary reflection mirror;deformation;Natural frequency- 41
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Published：2020-08-12 -
Computer Aided Engineering Analysis and Calculation Of the Light Weight Primary Mirror
Abstract：The weight of the primary mirror was reduced by drilling many holes on its back.Thesolid model of this light weight mirror was built by means of CAD,The weight and the lightweight ratio of the mirror was calculated.The FEM of the mirror was constituted.The staticanalysis and dynamic analysis of the mirror was made.The natural frequency of the lightweight mirror was compared with original mirror. The results show that designing of thelight weight primary mirror is satisfied its technic requirements。The dynamic stiffness andspecific stiffness was improved.The light weight ratio is more than 30%,The results ac-quired above has more important sense in the designing of primary mirror.Keywords：light weight;Specific stiffness;Primary mirror- 45
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Published：2020-08-12 -
Earth Infrared Radiation Analysis and Calculation for the Optical Window of High Resolution Space Optical Remote Senser
Abstract：The earth infrared radiation is analysed and calculated for the large aperture optical window of high resolution space optical remote senser by Monte-Carlo method.The multi-scatter in baffles and direct reflection in the surface of the optical window are considered,and thelimitation of vane structural assumption is also discussed.Keywords：Optical window;Space optical remote senser;Heat flux calculation;space environment- 31
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Published：2020-08-12 -
A New Method to Calculate The Heat Flux in Spacecraft Orbits
Abstract：According to the probabitity theory,the geometric factors for Earth-thermal and Earth-reflection are calculated by random simulant method in this paper.The calculation process iseffectively simplied.This method especially applies to the accurate thermal calculation for theouter parts of spacecraft.- 42
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Published：2020-08-12 -
Dynamic Simulation on Double Layer Curtain Shutter
Abstract：Dynamic simulation software on double layer curtain shutter is proposed in this paper.It is proved that this software is an effective tool for designing double layer curtain shutter on space sensitive camera.Keywords：Curtain;Shutter;Simulation .- 47
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Published：2020-08-12 -
Simulation Analysis on Stability of Profile Parameters of Precision Journal Bearing System
Abstract：The study on the stability of oil film motion with change of Profile profile parameters can obviously reveal the relation between profile parameter and stability character of bearing system,and give data for determination of parameters. The analysis process is described briefly in this paper.Keywords：Precision bearing system;Profile parameters;Oil film stability- 32
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Published：2020-08-12 -
Simulation System of Multimedia Laser Processing
Abstract：The significance of developing simulation system of multimedia laser processing has beenstated in this paper.The system frame base on laser processing multimedia database has beenproposed.The application of multimedia technology in engineering has been researched.Keywords：laser processing;Database;Multimedia- 49
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Published：2020-08-12 -
Dynamical Behavious Analysis and Optimum Design for Space Optical Instrument
Abstract：It is described that the feasibitity research and optimum design for space optical instrument,which suffers from severe space enviroment,have been done by means of CAE in thispaper. Through dynamical behavious analysis and response simulation of space optical instrument,the weak points are found,and then modification of design parameters is carried out.After several times design-analysis iteration by using FEM and optimum method,the reasonable design parameters are selected and the solution approaches to meet the requirements satisfactorilly.Keywords：Space optical instruments;Dynamical stiffness;FEM;optimum design- 25
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Published：2020-08-12 -
Method and Application or the Combination or FEM and the Optimum Method
Abstract：The method of combinging the two basic tools in computer-aided Engineering-FEM and optimum method in the design of optical instuments is described in this paper,the selectionand formation of optimum objective function and state varible in several space optical instruments are discussed and it provides the scientific references in engineering design.Keywords：FEM;optimum design;Least mean square method- 33
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- 6
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Published：2020-08-12 -
EDA Design Method for FPGA
Abstract：A design meth of for FPGA digital system in application of EDA software tool is given in this paper.These designers who use this method are able to design FPGA device reasonably and efficiently.Keywords：FPGA;EDA- 43
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Published：2020-08-12 -
Instance of Analog Citcuit Analysis
Abstract：The paper concisely elucidates analog workbench by one example,It proceeded analogcircuit analysis.Keywords：Analog circuit;simulation- 27
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Published：2020-08-12 -
A Kind of Computer Algorithm for Finding Common Trees
Abstract：The method of common tree transformation is used to find out all the common trees of two graphs with the same edge set and the same rank.The associated signs of common trees can be obtained at the same time.The flow-chart for realizing the algorithm is given.Keywords：Common tree;CChain path graph;Spanning loop set- 33
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Published：2020-08-12 -
A Study on DCEX-TOOL
Abstract：This paper outlines the structure and function of DCEX-TOOL. It is a new way to be intelligent CAD.Keywords：Expertise system;Circuit CAD- 27
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Published：2020-08-12
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