【正文】 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。 ANSYS software。現(xiàn)在解決了線性結(jié)構(gòu)的有限元方法和軟件問題越來越成熟，發(fā)展方向的結(jié)構(gòu)，流體動力學(xué)和耦合場問題的非線性。對于許多工程實際問題，在解決過程中，模型的某些方面會產(chǎn)生很大的壓力，導(dǎo)致失真，在解決機無法繼續(xù)或解決方案是不正確的，所以必須重科目產(chǎn)生。近年來，隨著計算機技術(shù)的普及和提高計算速度，在工程設(shè)計和分析的有限元分析，越來越多的關(guān)注，已成為一個復(fù)雜的工程問題的分析和計算的有效途徑，現(xiàn)在從汽車，穿梭幾乎所有的設(shè)計和有限元分析和計算都已經(jīng) 沒有制造，機械制造，加工，航空航天，汽車，土木建筑，電子電器，國防，船舶，鐵路，石化工業(yè)，能源，科研領(lǐng)域廣泛應(yīng)用，設(shè)計水平有了質(zhì)的飛躍，主要表現(xiàn)在以下幾個方面。 后處理模塊的響應(yīng) POST26 這個模塊是用來檢查時間或過程，如節(jié)點位移和應(yīng)力或反擊的結(jié)果。也可以是數(shù)據(jù)和圖形顯示列表兩種。在四種類型的分析：靜態(tài)分析和模態(tài)分析和諧響應(yīng)分析，瞬態(tài)響應(yīng)分析。 聲 學(xué)分析 該程序的功能是聲學(xué)研究在液體培養(yǎng)基中或在液體和固體結(jié)構(gòu)的動態(tài)特性分析聲波。 流體動力學(xué)分析 ANSYS的流體單元可以分析和流體動力學(xué)分析的瞬時或穩(wěn)定的類型。 熱分析 程序可以處理三個基本類型，傳導(dǎo)，對流和輻射傳熱。 結(jié)構(gòu)非 線性分析 以結(jié)構(gòu)非線性導(dǎo)致結(jié)構(gòu)或元件的比例與外部負載的反應(yīng)。靜態(tài)分析程序 ANSYS線性分析，不僅可以，而且也為非線性分析，如塑料，蠕變，膨脹，大變形，大應(yīng)變及接觸分析。 預(yù)處理階段完成建模，用戶可在溶液相的分析結(jié)果。 ANSYS 程序提供高品質(zhì)，使用功能的 CAD 模型嚙合方便 包括四個嚙合方式：延伸，圖像，自由和自適應(yīng)分區(qū)。在創(chuàng)建復(fù)雜的實體模型，線， 面，體，布爾操作可以減少大量的建模工作。向下的建模頂，用戶定義的最高數(shù)字模型，如球，為基稱為棱鏡，程序自動定義相關(guān)的面，線和點。由世界上最大的軟件公司和有限元分析軟件 ANSYS之一，美國和其發(fā)展的最，實現(xiàn)了數(shù)據(jù)交換和共享 CAD軟件接口，它是現(xiàn)代先進 的 CAD設(shè)計工具產(chǎn)品。 第六步，聯(lián)立方程和結(jié)果解釋：對，聯(lián)立方程組有限元方法，最終，聯(lián)立方程求解方法，選擇并能直接與隨機方法。 第三步，狀態(tài)變量和控制方法：一個具體的物理問題，往往會使用一組包含問題狀態(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。將一個簡單的幾何形狀函數(shù)的定義，而不是整個域單位考慮復(fù)雜