| Sealing device is important components, in aeronautical engines and mechanical,especially in systems the aero-engine gas path seal and main bearing chamber seal,which directly has an significant impact on improving engine performance such as fuel consumption, flight costs, thrust-weight ratio, engine and component life etc.Therefore, it is very significant to study advanced sealing technology and to provide more advanced sealing means for performance improvement and technology level raise of aviation engines and other mechanical equipment.The first chapter of this paper introduced significance of aeroengine sealing and the domestic and abroad research status of aeroengine seal, expounds the characteristics of the circumference of the circumferential sealing, briefly describes the research content, objective and method.The third chapter are described in detail rotor dynamics theory, it is concluded how to calculate the amount of run-out. It is Introduced about the finite element theory, contact theory, structural dynamics theory and the commercial software ANSYS Workbench the exposure settings, establishing the finite element model of the theoretical basis.In the fifth chapter,the calculation results of the fourth chapter are processed and analyzed. The results show that at the same condition of beat amplitude, with the increase of rotor beat frequency, the maximum sealing ring stress and strain increase gradually,and the gap between the sealing ring and the sealing runway during a period of time did not change significantly,and leakage did not change significantly. The sealing force between the ring and the runway is gradually increased, leading to increased wear and tear. And at the same frequency conditions, with the increase of rotor beating amplitude, the maximum sealing ring stress and strain increase gradually,and the clearance in a cycle increased, resulting in increased leakage. The force to the sealing ring increases, resulting in increased friction and wear. |
PDF Full Text Request