摘要
针对新型无铰式旋翼构型存在的大变形几何非线性及根部多路传力的特点,并考虑非定常气动载荷作用,建立了无铰式旋翼气弹综合分析的全本征方程。发展了高精度的伽辽金法变阶有限单元,利用Newmark平均速度法和牛顿松弛迭代,实现了旋翼动力学与气动力的紧耦合求解。经过算例的对比验证表明,本文方法能够准确模拟新型无铰式旋翼根部多路传力条件,并在稳态气弹响应、振动载荷以及气弹稳定性计算等方面具有较好的精度。
For the geometric nonlinear of large deformation and the characteristics of root multi-channel force transmission, the fully intrinsic equations are established for comprehensive aeroelasticity analysis of hingeless rotor considering the unsteady dynamic load. To solve the coupling problem of rotor dynam- ics and airdynamics, the high accuracy Galerkin variable-order finite element is developed with the use of Newmark average velocity method and Newton relaxation iteration method. The method not only accu- rately simulates the conditions of root multi-channel force transmission of new hingeless rotor, but also has good accuracy in the static aeroelasticity response, the vibration load and the calculation of the aeroelasticity stability.
出处
《南京航空航天大学学报》
EI
CAS
CSCD
北大核心
2016年第2期261-267,共7页
Journal of Nanjing University of Aeronautics & Astronautics
关键词
无铰式旋翼
气动弹性
全本征方程
几何精确梁模型
振动载荷
hingeless rotor
aeroelasticity
fully intrinsic equation
geometrically exact beam model^vibration load
作者简介
通信作者：刘勇，男，讲师，硕士生导师，E-mail：liuyong@nuaa．edu．cn。
