亚音速壁板气动弹性系统复杂响应研究

项目名称： 亚音速壁板气动弹性系统复杂响应研究

项目编号： No.11302183

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 数理科学和化学

项目作者： 李鹏

作者单位： 西南交通大学

项目金额： 26万元

中文摘要： 列车蒙皮、车窗等壁板结构在高速列车的流线型结构设计中有着广泛的应用。随着列车运行速度的不断提高，这些壁板结构在气流中的流致振动现象也将越明显，并会影响到壁板及列车的安全服役问题。详细了解壁板结构在亚音速气动环境中的动力学行为具有重要的理论意义和良好的工程应用前景。本项目拟从气动弹性力学的角度对亚音速壁板系统的稳定性及非线性复杂响应进行研究，以期揭示亚音速气动力对壁板结构动力特性的影响，为壁板结构在工程中的应用提供理论依据和适用于工程应用的分析方法。本项目拟研究的主要内容为：①亚音速壁板气动弹性系统动力学方程的建立；②基于微分求积法建立亚音速气体-壁板结构耦合振动系统的统一离散化格式及系统响应求解方法的建立；③亚音速气动力对壁板系统稳定性及非线性响应的影响；④随机作用力下的亚音速壁板气动弹性系统稳定性及非线性响应分析；⑤壁板低速风洞模型试验研究。

中文关键词： 高速列车；亚音速；壁板；气动弹性；风洞试验

英文摘要： The panel structures such as the train skins and windows have been widely applied in the streamlined design of high-speed trains. With the speed-up of trains, the flow-induced vibration of these panels become even more obvious and will affect the service of the panel structures and trains. To understand in details the dynamic behavior of panels in subsonic aerodynamic condition has important theoretical signficance and good prospects for engineering applications. This project intends to focus on the stabilities and nonlinear dynamics analysis of subsonic panels from the perspective of aeroelasticity with a view to revealing the effect of subsonic aerodynamic force on the panel structures dynamic behavior and providing some theoretical basis and analytical methods for engineering applications. The main contents are: i) establishing the dynamic equations of subsonic panel aeroelastic systems; ii) developing a unified discretization scheme for the subsonic flow-panel structure coupled vibration system based on the differential quadrature method and seeking the methods of sovling responses; iii) the effect of subsonic aerodynamic force on the panel stabilities and nonlinear response; iv) the stabilities and nonlinear response of subsonic panel aeroelastic systems under random loadings; v) experimental studies of pa

英文关键词： high-speed trains；subsonic；plates；aero-elasticity；wind tunnel test