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微分求积法分析二维亚音速壁板的失稳问题 被引量:7

INSTABILITY ANALYSIS OF TWO-DIMENSIONAL THIN PANELS IN SUBSONIC FLOW WITH DIFFERENTIAL QUADRATURE METHOD
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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
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