Study On Visual Modeling Of Structure Optimization And Software Development

At present, Development of a software system based on scientific visualization for the whole process of structural optimization appears a leading evolution in the field of structure optimization. The practical procedure of conventional optimization method including both modeling and calculation is a black box for engineers, which puts the users in a passive position, and made them unable to interfere with the design procedure. The construction of a human-computer interface based on the integration of softwares can advance the application of optimization design to engineering.The optimization for antenna structures turns to be morn important for its complexity and high precision.　Illustrated by antennas' structure optimization, it is presented the three essential modules——geometry module, FEM module, optimizations module, which build visualization software systems of structure optimizations．The visual optimization module is made of three parts——optimization modeling visualization, calculation visualization and their connection calling of optimization programs . It is discussed the realization methods and key techniques of modeling visualization and calling of optimization programs. In the aspect of modeling, a series of visual window interfaces have been developed in Delphi to determine object function, constraint function and design variables, with the emphasis on the determination of design variable system on the graphics of geometry modules via the technique for opening I-DEAS software. As for the practical method of the interface between modeling and calculation, calling and controlling of calculation program written in Fortran in the development environment of Delphi are in virtue of the techniques of Fortran/Delphi mixed-language programming and multi-threaded application.