Research Of CAD/CAE Integration Based On STEP Standard

With constantly developing and booming,CAD and CAE technology have been ratherly progressed,but the two systems are still at a relatively independent. CAD/CAE integration has great guiding significance and utility value on product design and production.It's urgent to find the way to combine the two systems for great effectiveness.The appearance of STEP standard provides a feasible solution to CAD/CAE integration.The paper mainly focuses on the method of CAD/CAE integration which is based on STEP standard.The major work is as follows:After in-depth study of STEP standard and application protocol AP209, according to the current CAD/CAE integration methods,factors that affect the system integration and problems that exit in sharing geometric model,the overall scheme is worked out,as well as the CAD data converter.The converter is mainly made up of information extraction module,information processing module and STEP file generated module.Firstly,on the basis of the AP203 file interpretation,geometric and topological information in AP203 file is extracted through ROSE Library in ST-Developer 10.0 and VC++6.0 integration environment.Then,HASH algorithm is used to deal with redundant information.For the data information that influences finite element meshing,the paper puts forward a method that reconstructing the geometric entity by merging and regenerating geometric information with related geometric and topological information no destroying original topological relationship.Finally,using ROSE early-binding and late-binding mode,the data information such as geometry,material and grid is written into the design object to output AP209 file.In the paper,the converter can implement the file conversion from AP203 to AP209.This weak-coupling CAD/CAE integration method based on STEP standard is favorable for data management and function expansion.