4  With the CAD software seamless integration now the finite element analysis system another characteristic is and the general CAD software integrated use namely, after uses CAD software to complete the part and the components modeling design, automatically produces the finite element grid and carries on the computation, if analyzes the result does not conform to the design requirement then recarries on the modeling and the computation, until satisfaction, thus enormously raised the design level and the efficiency。

   The complex project analysis question today, which engineer may quickly solves in integrated CAD and in the FEA software environment in before is unable to deal with。 Therefore now all shangye finite element system business all has developed and famous CAD software (for example Pro/ENGINEER, Unigraphics, SolidEdge, SolidWorks, IDEAS, Bentley and AutoCAD and so on) connection。 

5  Basically in Wintel platform development early time finite element analysis software all is in the large and middle scale computers(mainly is Mainframe) on the development and the movement, after wards also developed take the project workstation (EWS, Engineering WorkStation) as the platform, their common characteristic all uses the UNIX operating system。。 The PC machine appearance caused the computer the application to have he fundamental change, engineer had longed for completed the complex project analysis on the desk the dream to become the reality。 But early PC machine uses 16 CPU and the DOS operating system, in the memory public block data is restricted, at that time there fore calculated the model the scale not to be able to surpass 10,000 steps equations。 Microsoft the Windows operating system and 32 Intel Pentium processor promoting for used in the finite element analysis PC machine to provide essential software and the hardware supports the platform。 Therefore on the current international famous finite element procedure research and the development organization all in abundance move theirs software the value to the Wintel platform in。 Next cava logged version environment and the SGI workstation simultaneously calculates the solution time with ADINA the V7。3 in PC machine Windows on the NT which 4 projects examples needed。 May see the newest upscale PC machine solution ability already and center low-grade EWS is equally matched。

  In order to will develop on the large and middle scale computers and EWS the finite element procedure will move the value to PE machine on, frequently will need to use Hummingbird Corporation simulation software Exceed。 Does this the result quite is troublesome, moreover cannot fully use the PC machine software and hardware resources。 Therefore recently some companies, for example IDEAS, ADINA and R&D starts in the Windows platform to develop the finite element procedure, is called as " Native Windows" The edition, meanwhile has the finite element routine package which in on Linux operating system environment develops in PC machine。 

   The domestic development situation and the prospect in 1979 US'S SAP5linear structure was static, the mechanical analysis procedure transplants successfully to the domestic introduction, raised the application general finite element procedure to analyze the computation project question the high tide。 This high tide continuously continued to 1981 the ADINA non-linear structure analysis procedure introduction, many continuously was unable the project difficult problem which solved all to be easily solved for a while。 Everybody also starts to realize indeed is engineer carries on then is computation to the finite element analysis procedure using the computer the important tool。At that time but was restricted in the domestic large and middle scale computers very few, probably only had the Hangzhou steam turbine factory Siemens7738 and the Shenyang air blower factory IBM4310installment has the above procedure, therefore the user mathematics problem was not extremely convenient, moreover the expense was expensive。 The PC machine appearance and its the performance miracle enhancement, for transplanted and develops the PC edition finite element procedure to provide the essential movement platform。