Structure Model Modification And Application-Based On Analysis Of The Equivalent Plate

With the further development of the finite element analysis,to establish accurate models of complex aircraft structures is becoming increasingly important. Accurate analysis model based on the principle of equivalence with discrete source damage can be achieve build the accurate models rapidly and fast analysis. In order to apply the principle of equivalence to the aviation safer areas and work more correction,It is need to more comprehensive understanding the principle of equivalence and master the use of optimized design principle for discrete source damage models.This paper focus on the static and dynamic of the plate model with discrete source damage,Application the basic principles of equivalence and accurate modeling of plate model with discrete source as the basis for the finite element simulation. On this basis, Use of the Nastran process to optimize and amend the discrete source damage board model,by comparison of the simulation results and experimental results of the analysis,to validation the Nastran described here create an accurate analysis and a validity model.The main work and conclusions are as follows :(1) Through the static properties of the plate model with discrete source damage to analysis and optimize design, to verification the procedures are correct in statics and the equivalentce. The results show that the Nastran match programs for the static properties is correct and effective.(2) Based on the equivalentce of the plate model with discrete source damage,further study its dynamics simulation analysis to verify the procedures correct in statics and theequivalentce.The results show that the Nastran match programs for the dynamics properties is correct and effective.(3) Through the application of the NASTRAN procedures on the AGARD 445.6. and simulation. Comparison to the results with experimental AGARD 445.6 wing modal, to verification the Nastran design process is correct and effective.