Parameterized Method For Finite Element Model Of Face-reflector Antenna Based On CAD/CAE Integration

This paper is financed by the National Defense Science foundation project" three-D Digital Design and Analysis System of Catered to Antenna". The antenna has something requisition with special characteristics. Therefore it is much concerned by the project workers on how to design the structure of antenna accurately. Presently the finite element analysis has been widely used in antenna, but it is a difficult and importance matter to build up correct finite element model (FEA) after structure designed. That has become a choke point in spreading application of antenna structure analysis. Consequently it needs to be solved urgently.The face-reflector antenna may produce a series that has similar structure. For the series of products, it is easy to build up the model and analyze the structure by using parameterized design project. Based on the idea of the structure parameterized design method in FEA, the FEA model can be easily created through adjusting several geometric parameters and the process of FEA is automatically executed. Considering the special characteristics of face-reflector antenna, this paper presents a parameterized design project for its FEA model based on synthesis of CAD/CAE. Virtual antenna-manufacturing system and antenna-CAE-simulation system that are both developed by utilizing programming tool of object-oriented language, connect with relational database. CAD and CAE are synthesized through the interface of the center database. The virtual antenna-manufacturing system reduces it to much regular object and obtains their characteristic parameter to keep it in the center database. The antenna-CAE-simulation system extracts these data from the database to analyze, simplifies the model and combines the structure. Then it compiles APDL parameterized language of its FEA model in the object-oriented language. Finally the system executes the APDL parameterized language, and the FEA model of antenna is built up spontaneously in the APDL parameterized language.The system will supply reserved for the use of instrument of FEA for designers. Pass through test of 7.3-meter antenna, the system built up a correct FEA. These data coincide with real result. It alleviates designers' work and could been manipulated conveniently with much less time and stable performance.