Active Control of Coupled Aeroelastic/Structural Acoustic Systems

9501470克拉克这个职业奖强调与衰减封闭声场的声学响应有关的研究和教育活动，例如受到湍流边界层激励的飞机机身。本文建立了可压缩平均速度流场和封闭声场之间的单、双层隔板的气动弹性、结构声学系统的耦合模型。湍流边界层噪声模型用于产生系统的外源输入，并通过结构声学控制方法控制声学响应。风洞试验进行模型验证和替代控制策略的评估。 教育计划包括机电控制系统演示单元的开发，与当地科学博物馆的联系，自适应结构课程的设计，以及在本科机械工程教学中集成最新的动力学和控制计算机软件包。

9501470 Clark This CAREER award emphasizes research and educational activities related to attenuating acoustic response of enclosed sound fields such as the fuselage of an aircraft subjected to turbulent boundary layer excitations. A coupled model of the aeroelastic, structural acoustic system is developed for single-leaf and double-leaf partitions between compressible flow fields with a mean velocity and an enclosed sound field. Turbulent boundary layer noise models are used to generate the exogenous inputs to the system, and acoustic response is controlled through structural acoustic control methods. Wind tunnel tests are performed for model validation and alternate control strategy evaluation. Educational programs include the development of an electromechanical control system demonstration unit, outreach to a local science museum, design of a course on adaptive structures, and integration of latest computer software packages for dynamics and control in undergraduate mechanical engineering instructions.***