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CAE (puter Aided Engineering) is using a puter Aided solving plex 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 bee 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 puter 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 bee an important tool for structure optimization and also puter 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 bination, 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 plicated problem. The basic process is a plex shape of the continuum of solving regional deposition for limited area, the simple shape is a continuum by finite element bination simplifies the equivalent bination, 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, ponents 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 plicated 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