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CAE (Computer Aided Engineering) is using a Computer Aided solving complex Engineering and product structure strength, stiffness and stability, the dynamic response of buckling, heat conduction, three-dimensional multi-body contact, elastic-plastic mechanics properties such as structural properties of the analysis and calculation of the optimization design of the problems such as an approximate numerical analysis method. CAE begins from the early 1960s in engineering application to begin today, has experienced 30 years of development history, its theory and the algorithm has experienced from the vigorous development to mature process, it has become the product structure analysis and engineering (such as aerospace, aviation, machinery, civil structure etc) essential numerical tool is also analyzed all kinds of questions for mechanics is a kind of important means. With the popularization of computer technology and continuously improve, CAE system function and calculation accuracy has increased greatly, based on the modeling of digital products, CAE system and structure analysis and has become an important tool for structure optimization and also computer aided 4C system (CAD/CAE/CAPP/CAM) important segment. The core idea of CAE system structure is the actual structure is discretized as a limited number of discrete element combination, the rules of the real structure of physical properties of discrete body is analyzed, and the result of approximation precision engineering to replace for actual structure analysis, so we can solve a lot of practical engineering needs to solve and theoretical analysis and unable to solve the complicated problem. The basic process is a complex shape of the continuum of solving regional decomposition for limited area, the simple shape is a continuum by finite element combination simplifies the equivalent combination, Through the continuous discretization, solving the continuum variables (stress and displacement and stress and temperature, etc.) for solving the problems of the field variables on the unit nodes. This is a basic equations of algebraic equations, not the original real continuum field variables describing the differential equations. After an approximate solution and the numerical solution of approximate depends on the type of unit used for the unit, and the interpolation function. According to the experience of each stage, CAE for: 40-45 for model and the data input, 50% ~ 55% for analysis and evaluation, the interpretation of the results of the analysis and calculation of the real time and accounts for only about 5%. In view of this situation, adopt CAD technology to establish the geometry model and CAE physical model, analyze data input, usually says the process of CAE. Also, the results also need CAE CAD technology, the graphics output generated image, such as stress, displacement map generating, temperature, pressure distribution of stress, said isoline map, temperature and pressure distribution of light color, and with the mechanical load and temperature load change generated displacement and stress distribution of temperature, pressure, and the dynamic shown FIG. We call this process for CAE post-processing. According to the different application, usable also CAE simulation parts, components and devices (machine) and production line, the movement and factories.

CAE software research object is divided into: according to the static structure analysis, the dynamic analysis, According to the research into the problem of linear and nonlinear problem;
Basically has: Hyperworks, basically do processing (units) and load unloading and post-treatment (see output results and simulation)
I-deas, also do CAD
Ansys, very classic CAE, domestic most widely used, customer the highest, especially in colleges and universities, maturity of scientific research.
ADINA, strong nonlinear function, the world could do direct fluid-solid coupling of software, the most reliable CAE software.
Abaqus, strong problem solving complicated nonlinear dynamic analysis module, special automobile,
Ls-dyna, powerful dynamic problem solver, special automobile analysis module,
Nastran, linear problem solving
Pam and collisions, special research software
Moldflow, mold flow analysis software
AutoForm, sheet metal stamping, especially the deep analysis software
Madymo, automotive safety systems, such as air vehicle crashworthiness belt analysis software

Computer Aided Engineering (CAE) is a computer-aided engineering and product for complex structural strength, stiffness, buckling stability, dynamic response, heat conduction, 3D many-body contact, elastic-plastic, etc., analysis of mechanical properties and performance optimization of structure plans an approximate numerical analysis method.CAE from the 1960s in engineering was today, has gone through more than 30 years of its history, theory and algorithm have gone from flourishing to mature is a process that has now become an engineering and product structures (such as aviation, aerospace, mechanical, civil structures and so on) the essential value calculation tools, but also the analysis of continuous mechanical all kinds of problems.As the popularity of computer technology and rising CAE system features, and the precision of calculations increase considerably, various modeling based on product number on a different plane of CAE system, and has become a structural analysis and optimization of important tools as well as computer-aided 4 c system (CAD/CAE/CAPP/CAM).The core of CAE system thought is the structure of discretization of the actual structure, there will be a limited number of discrete rules unit, the actual structure of the physical properties of discrete body can be analyzed and draw an approximate engineering precision results in place of the analysis of the actual structure so that you can solve many practical projects need to be resolved and theoretical analysis and complex issues cannot be resolved.The basic process is a complex one shape continuum solution domain decomposition as limited shape simple child zone, will soon be a continuum simplified to pertain to a finite number of modular combination of equivalent; by discretization of the continuum, to solving continuum field variable (stress, displacement, pressure and temperature, etc.) to solve the problem to a limited group of element node field in the value of the variable.At this point the basic equation is an algebraic equations, instead of the original description true continuum field variable system of differential equations.Approximate solution is the result of the numerical solution, a close degree depends on the type and quantity of the cell and the cell interpolation function.Experience has shown that the CAE different stages of the time it takes to: 40% to 45% for modeling and data entry, 50% to 55% is used to analyze the results of the interpretation and evaluation, while the real time analysis of only account for 5%.In view of this situation, using CAD technology to establish a CAE geometric model and physical models to complete the analysis of data input, you typically call this procedure for CAE of pretreatment.Similarly, the results of the CAE with CAD will also be needed to generate the image of the graphics output, such as generated displacement map, stress, temperature, pressure distribution of contour map that represents stress, temperature, pressure distribution of color of light and dark figure, as well as with the mechanical load and temperature changes generated displacement load, stress, temperature, pressure, and so on distribution of dynamic display picture.We call this process a post-processing for CAE.For different applications, you can also use the CAE simulation of parts, components, equipment (the whole machine) or even a production line, factory sports and the running state.The object of study by CAE software include: static structure analysis, dynamic analysis; as to the study of the question is in linear problems, nonlinear problems; For Hyperworks, essentially pretreatment (unit plus loads with constraints) and post-processing (see output and simulation) The I-deas, as well as do CAD Ansys, very classical application of CAE, domestic customers the widest maximum maturity, especially in the field of scientific research.Non-linear ADINA, powerful functionality, unique in the world can do direct FSI software, is the most reliable CAE software.Abaqus, powerful nonlinear Solver complex dynamic problem, specifically, automobile analysis module LS-DYNA, powerful dynamic problem solver, specialized vehicle analysis module, Nastran, linear problem solver Pam crash, specialized collision software Moldflow flow analysis software, AutoForm, sheet metal stamping, especially drawing analysis software Madymo, car safety systems, such as airbags, safety belt vehicle crash performance analysis software