摘要
基于自适应减振和内嵌流体柔性板(PIFS)的定频稳态试验,提出板结构的内嵌粘性流体单元(IVFU)的自适应减振理论和相应的力学方法(IVFUM)。在定频简谐激励下,通过构建流体活动边界条件(FDBC),将PIFS的流固耦合模型简化为充液腔内的纯流体动力学问题,应用CFD软件FLUENT对不同工况下柔性板内嵌流体的流动进行数值模拟,结合试验结果可以得到板内嵌流体的运动性态和力学行为的定性和半定量的规律,从而揭示内嵌流体板IVFU减振的内在机理,并从振动控制的角度探讨了IVFU减振的影响因素。
A new plate vibration suppression method with imbedded viscous fluid units （IVFU） is proposed based on adaptive vibration suppression theory and experimental resuhs of a plate with imbedded fluid subsystem（PIFS） excited by a sinusoidal harmonic at fixed frequency. A liquid-solid coupling model of （PIFS） is simplified to a fluid dynamic model for the cavity in PIFS by constructing fluid dynamic boundary conditions （ FDBC）, then the flow of the imbedded fluid in PIFS is simulated by FLUENT under different working conditions. The dynamic behavior of the imbedded fluid in PIFS can be obtained half-quantitatively and qualitatively by combining experimental resuhs. The mechanism of the vibration suppression system with IVFU is exposed. And the factors affecting the vibration suppression with IVFU are discussed in detail.
出处
《机械科学与技术》
CSCD
北大核心
2007年第9期1130-1134,共5页
Mechanical Science and Technology for Aerospace Engineering
基金
国家自然科学基金项目(10372076)资助
