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1、计算机在材料中的应用（The application of the computer in the material）The application of computer in material forming and processingIn this paper,With the development of computer technology,In particular, the function of microcomputer is continuously enhanced,Computer inApplications in all fields are becoming
2、more and more extensive. In the field of material forming and processing,The use of computers is also very bigThe development of,It mainly focuses on numerical simulation and automatic control of material forming process.This paper summarizes the liquid forming,Plastic forming,Computer simulation an
3、d computer control technology in the process of material formingIts development.The keyword:The computersimulationcontrolMaterial formingapplication1. Role and status of material forming and processing technologyMaterial forming and processing industry is an important part of manufacturing industry.
4、Material forming processing technology is automobile,electricityForce,Petrochemical,Basic manufacturing technologies for pillar industries such as shipbuilding and machinery,The new generation of materials processing technology is also the firstImportant content in manufacturing technology, C27The p
5、rocessing technology of casting, forging and welding is the national economyContinuing development of principal technologies.Rapid development of industrial technology requires the elaboration of manufactured products,Lightweight,integrated;The international competitionMore intense market demands hi
6、gh performance, low cost, short cycle;The deteriorating environment requires material addedRaw materials and energy consumption and low pollution. In order to produce high precision, high quality, high efficiency products, materialsA single traditional type to compound,Multi-functional development;T
7、he processing and manufacturing techniques of material forming are gradually integrated.Diversified, flexible and multi-academic. Therefore, the market economy, participation in global competition, must be very heavyTechnological advances in advanced manufacturing techniques and forming techniques.T
8、he application of computer simulation in material forming and processingMaterial forming process is extremely complex high temperature, dynamic and instantaneous process, difficult to observe directly. Using the meterThe computer simulation material forming process can predict the quality of the pro
9、duct and reduce the number of experiments;Determine the best process flowTo meet the requirements of a particular performance;Dynamic shows the evolution process and spatial distribution of various physical quantities;mentionHigh labor productivity.At present, the simulation technology can be used i
10、n the precise forming process of pressure casting and mold casting.The simulation study of welding process has also made encouraging progress.oneComputer simulation of liquid form1The computer simulation of the liquid forming process has been entered into the micro-simulation stage by the macro simu
11、lation of the shape dimension.from1992So far this year,Computer simulation of microstructure is carried out.Obtained repeatable product quality,The visualization of process is realized.1.1Computer simulation of liquid metal filling processThe computer applies the final assignment in the material sci
12、enceThe application of computer in material forming and processing- 2 -So far, many algorithms have been developed, such as parallel algorithm, three-dimensional finite element method, and 3dFinite difference method,The algorithm of numerical method and analytical method is used.The numerical simula
13、tion of the filling process has already occurredSome of the commoditized packages,And under pressure casting,Low pressure casting,Die casting and other casting methods,In theThe defect analysis and optimization process of actual casting have been applied positively.Future studies on imitation simula
14、tionThe development trend is to help design the pouring system.1.2Computer simulation of solidification processThe basic theoretical basis of numerical simulation of casting solidification process is the differential equation of Fourier conduction. The numerical simulationThe basic methods are finit
15、e difference method, finite element method and boundary element method.At present,The shrinkage cavity,The method of quantitative prediction has been applied in foundry,And got goodEconomic benefits. Such as deyang China double group foundry factory2001The Yangtze river was successfully simulated by computerThe impeller of the three gorges water turbine ended the import from Canada
