摘要
为减小发动机传递至飞机机身结构的振动,设计了金属橡胶减振器用于航空发动机安装。对该金属橡胶减振器进行了动力学建模研究,采用有限元技术对安装减振器前后的飞机全机结构进行了仿真分析,初步表明了该设计对结构频率影响较小,但能引入较大阻尼,降低响应水平。在理论分析基础上,进一步将设计制造的金属橡胶减振器安装于某型飞机,进行地面开车,实测了应用减振安装前后飞机的动力学响应。结果证明了发动机减振安装的可行性与有效性。
In order to reduce the vibration the engine transfers to the fuselage structure,a metal rubber damper is designed and used in the installation of a jet engine. A dynamics model of this metal rubber damper is built and a dynamics simulating analysis of the airplane structure with or without the damper is performed. It is demonstrated that this design introduces considevable damping and greatly reduces vibration response without much effect on structure frequency. After theoretical analysis the metal rubber damper so designed and built is used in a type of airplane. The response of the aircraft with and without the metal rubber damper is measured during the engine trial run on the ground. The results prove the feasibility and validity of the engine installation of metal rubber damper on an aircraft engine.
出处
《航空学报》
EI
CAS
CSCD
北大核心
2008年第6期1581-1585,共5页
Acta Aeronautica et Astronautica Sinica
基金
国家级项目
