华中科技大学学报：自然科学版2011，Vol.39Issue(8)：67-71,5.
考虑摆振销影响的无轴承旋翼气弹稳定性分析
Aeroelastic stability of an advanced bearingless rotor with consideration of a lag pin
摘要
Abstract
Nonlinear strain-displacement relations were presented using Green-Lagrange strain tensor and an advanced bearingless rotor was modeled with multiple-load-path.Two-dimensional quasi-steady strip theory was used to evaluate aerodynamic forces.Unsteady effects were simulated by a dynamic inflow model.The finite element equations of a blade motion were obtained from Hamilton′s principle.Effects of a lag pin on aeroelastic stability of an advanced bearingless rotor in hover were investigated.Numerical results show that up-location of the lag pin introduces a negative pitch-lag kinematic coupling and improves the lag mode damping of a blade effectively.Vertical offset of the lag pin has a substantial influence on the lag mode damping of the blade.Moving the lag pin attachment point to the higher position increases the aeroelastic stability boundary of the bearingless rotor.关键词
直升机/无轴承旋翼/非线性振动/多路传力/气弹稳定性/摆振销/悬停Key words
helicopter/bearingless rotors/nonlinear vibration/multiple-load-path/aeroelastic stability/lag pin/hover分类
航空航天引用本文复制引用
高文杰,向锦武..考虑摆振销影响的无轴承旋翼气弹稳定性分析[J].华中科技大学学报：自然科学版,2011,39(8):67-71,5.基金项目
国家自然科学基金资助项目 （）
