Analysis Of Effects Of Accessories On Aeroengine Stator System Vibrational Behavior

The dynamic behavior of aero-engine is an important idex evaluation.In this paper,aiming at a certain type of turbo-jet engine for dynamic analysis.Lay the foundation for the follow-up work,as well as provide data support for structure optimization and new type of research and development.In this paper, the static finite element model of the stator system, and the casing of the bracket and accessories casing finite element model, which uses two-dimensional shell elements for thin-walled structural to analysis and appraisal. Application of Rayleigh - Ritz method derived analytical solution of cylindrical shells to calculate the case of simply supported at both ends of the natural frequencies of cylindrical shells.Using MSC NASTRAN software QUAD4, QUAD8 and HEX units calculate cylindrical shell vibration, compared with the analytical solution for the casing model provides a guarantee of accuracy.Using MSC.NASTRAN solver calculated the dynamic behavior of stator system,including modal analysis and frequency response analysis.Get the conclusion based on analysis the results.To calculate dynamic characteristics of rotor system provides the necessary data. While installing accessories on the stator system carried out analysis of dynamic characteristics,including modal analysis and frequency response analysis.Get the conclusion based on analysis the results.Finally, the difference between the two models comparedThis paper is preparing the work for research,and solve similar problem in other models have some reference.