【導(dǎo)讀】有限元分析的基本概念是一個簡單的問題解決之后，而不是復(fù)雜的問題。這個解決方案是不準確的解決方案，但實。際問題近似解，因為一個簡單的問題。由于大多數(shù)的實際問題，并得到了有限元。計算精度的精確解，并能適應(yīng)各種復(fù)雜的形狀，從而成為有效的工程分析方法。有限元是實際的合作，說域離散元。在以前就已經(jīng)生產(chǎn)和使用，如使用多邊。有限元方法最初稱為矩陣近似方法應(yīng)用于飛機結(jié)構(gòu)強度計算，因為它的便利。性，實用性和有效性的機制以及研究的科學(xué)家的興趣。技術(shù)領(lǐng)域成為一個豐富多彩的，適用范圍廣，實用高效的數(shù)值分析的一種方法，60年代初首次提出了結(jié)構(gòu)力學(xué)的有限元計算的概念生動地描。互連接的近似解域，習(xí)慣上被稱為組件網(wǎng)絡(luò)分割元素。問題狀態(tài)變量邊界條件，有限元差分，把形式等同功能微分方程方程合適。結(jié)果是單位節(jié)點的狀態(tài)變量的近似值。輪廓的顏色顯示，梯度矢量顯示，爆炸顯示，標記，立體顯示的部分顯示結(jié)果，

　　

【正文】 le curve is instrumental to visual representation to the results of analysis. 4 The development trend of the finite element analysis In1965, Finite Element is the term the first time, to today39。s finite element widely used in engineering, went through 40 years of development history, theory and algorithms have been increasingly improved. In recent years, with the popularization of puter technology and to improve the calculation speed, finite element analysis in engineering design and analysis are getting more and more attention, has bee a plex engineering problem analysis and calculation of the effective way, now, from cars to shuttle almost all of the design and manufacture of finite element analysis and calculation are already without, In mechanical manufacturing, processing, aerospace, automotive, civil building, electronic appliances, national defense, shipping, railway, petrochemical industry, energy, scientific research fields of wide application has design level a qualitative leap, mainly in the following respects. And seamless integration of CAD software Today, the finite element analysis software is a development trend of CAD software integration with the universal use, namely in CAD software ponents and parts, after the modeling design can directly transferred CAE software model of meshing finite element analysis and calculation, if the results of the analysis does not meet the design requirement, design and analysis, again until satisfaction, thus greatly improve the design efficiency and level. More powerful grid handling ability Finite element method of solving problems mainly includes the basic process: discretization of objects, finite element method, and the calculation results of the postprocessing. The structures of the quality of discrete grid directly affect the correctness of the solution and the time, in recent years, various software developers have stepped up their investments in grid process, the quality and efficiency of grid generation are improved greatly. For many practical engineering problems, in the solving process, certain areas of the model will produce great strain, causes distortion, resulting in solving unit cannot continue or solution is not correct, so must be heavy division mesh. Adaptive grid is often many engineering problems such as crack propagation, sheet molding the necessary conditions of large strain analysis. From solving linear problem to solving nonlinear problem With the development of science and technology, linear theory has far cannot satisfy the requirement of engineering design, many problems such as the material damage and crack failure, only by linear theory etc, must not solving nonlinear analysis method, and plastic, rubber, ceramic, concrete and rock materials when considering the material analysis of plastic, creep effect must consider the material nonlinearity. By a single structure field to solve the problem solving coupling field The finite element analysis method applied in aerospace field, mainly used for solving linear structure, the practice has proved that is a very efficient numerical analysis method. Now for solving the problem of linear structure finite element method and software has more mature, the developing direction nonlinear of structure, fluid dynamics and coupling field problem. Due to the application of finite element, more and more people concern more plex, coupling field is surely bee ANSYS software development direction. Program useroriented openness Along with the increase of mercial software developers to expand and their market shares, satisfy the demand of users, in the function, the usability of software aspects has spent a lot of investment, but because the user39。s requirements, no matter what they could to satisfy all customers requirements, so must give users a open environment that allows users according to their actual situation to the software, including userdefined unit characteristics, userdefined material constitutive (structure, hot constitutive, fluid constitutive), userdefined flow boundary conditions, a userdefined structural fracture criterion and crack propagation law, etc. 5 Conclusions Concern the development of the theory of finite element, adopt the most advanced technology, the expansion of the software, improve performance to meet customer demand, is increasing its continuous product possess the market, the survival and development of the fundamental way. References [1] LiLiMing. ANSYS finite element analysis and practical course [M]. Beijing: Tsinghua university press.