当前位置: X-MOL 学术J. Fluids Struct. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Analysis of nonlinear aeroelastic response of curved panels under shock impingements
Journal of Fluids and Structures ( IF 3.6 ) Pub Date : 2021-10-08 , DOI: 10.1016/j.jfluidstructs.2021.103404
Xiaomin An 1 , Bin Deng 1 , Jiayue Feng 1 , Youwen Qu 1
Affiliation  

This study focuses on the fluid–structure interaction of two-dimensional flexible curved panels subjected to an impinging oblique shockwave in inviscid supersonic flow. A fluid–structural coupling solver is employed to simulate the nonlinear aeroelastic responses of four curved panels under different incident shock strengths. The responses, comprising the static deformation, flutter onset, and post-flutter are determined and compared to those of flat panel and shock-free conditions. The curvature effects, shock–shock interaction, as well as incident strengths, have profound influences on the solution. In the absence of incident shock condition, the greater the curvature of the panel, the smaller the critical flutter dynamic pressure. In the condition of shock impingement, for the smaller curvature, strong incident shock can advance the flutter onset, and there exist multiple solutions under different initial conditions; while for the larger curvature, strong incident shock can suppress the flutter onset, and the travel-like oscillation is observed at post-flutter.



中文翻译:

冲击冲击下曲面板的非线性气动弹性响应分析

这项研究的重点是二维柔性弯曲板在无粘性超音速流中受到撞击斜激波的流固耦合。流体-结构耦合求解器用于模拟四个弯曲面板在不同入射冲击强度下的非线性气动弹性响应。确定响应,包括静态变形、颤振开始和后颤振,并与平板和无冲击条件下的响应进行比较。曲率效应、冲击-冲击相互作用以及入射强度对解具有深远的影响。在没有入射冲击的情况下,面板的曲率越大,临界颤振动压越小。在冲击冲击条件下,对于较小的曲率,强入射激波可以促进颤振的发生,不同初始条件下存在多种解;而对于较大的曲率,强烈的入射冲击可以抑制颤振的开始,并且在颤振后观察到旅行状振荡。

更新日期:2021-10-09
down
wechat
bug