滑橇式直升机地面共振非线性时域仿真OA北大核心CSTPCD
Nonlinear Time-Domain Simulation for Skid Helicopter Ground Resonance
为研究非线性因素对滑橇式直升机地面共振的影响,针对滑橇式起落架弹性结构及机体阻尼器连接方式的特点,建立了简洁有效的直升机地面共振当量平面模型.该模型不仅计入了桨叶减摆器以及机体阻尼器的非线性,还考虑了机体阻尼器非比例阻尼对机体固有特性的影响.通过激振法激出机体模态稳态响应,并采用模态阻尼识别法对瞬态响应进行模态阻尼识别.分析可知,机体阻尼器提供的非比例非线性阻尼使得机体模态阻尼在时域上呈现较复杂的变化,系统稳定时,激出的阻尼器稳态响应速度幅值越大,其变化就越滞后.
In order to study the influence of non-linear factors on skid helicopter ground resonance,a concise and effective equivalent planar model of helicopter ground resonance is established based on the characteristics of elastic skid landing gear and the connection type of fuselage damper.This model not only considers the non-linearity of blade damper and fuselage damper,but also considers the influence of the non-proportional damping of fuselage damper on fusela…查看全部>>
吴靖;刘湘一;宋山松
海军航空大学航空基础学院,烟台 264001海军航空大学航空基础学院,烟台 264001海军航空大学航空基础学院,烟台 264001
滑橇式直升机地面共振非线性非比例阻尼时域仿真
skid helicopterground resonancenon-linearitynon-proportional dampingtime-domain simulation
《南京航空航天大学学报》 2024 (2)
234-241,8
评论