摘要
采用微分求积方法(简称DQ方法)研究了亚音速气流中二维壁板的失稳问题.运用特征值方法分析了壁板在不同边界条件下的失稳特性.结果表明:本方法可有效确定系统的失稳;两端简支和两端固支的壁板出现了发散失稳而未出现颤振失稳;固支—弹性支承的壁板系统出现了颤振失稳,颤振失稳动压与系统参数相关.
The instability of a two-dimensional thin panel in subsonic flow was studied by using Differential Quadrature method (DQ method) . The eigenvalue numeric method was used to study the instability characteristics of panels with differential boundary conditions. The results show: 1) that the critical parameters can be efficiently obtained by DQ method; 2) that panel which is fixed at both ends undergoes divergence; 3) that the clamped-spring support panel flutters; 4) and that the critical flutter dynamic pressure is influenced by some system parameters.
出处
《动力学与控制学报》
2012年第1期11-14,共4页
Journal of Dynamics and Control
基金
国家自然科学基金资助项目(10972185)
中央高校基本科研业务费专项资金资助项目(2010Z707)~~
关键词
亚音速流
微分求积法
壁板
发散
颤振
subsonic flow
Differential Quadrature method ( DQ method)
thin panel
divergence
flutter