金属丝网-油液介质耦合减振器动态特性试验与建模研究

 基于电子信息设备振冲防护中抗大冲击并兼顾衰减振动要求,通过巧妙地结合金属丝网阻尼元件和油阻尼介质及橡胶元件和金属弹性元件设计了结构微小的原理试验样机;该样机适合航空应用;样机的多参数匹配试验研究表明该耦合减振器具有强非线性动态特征,在此基础上结合理论分析形成复合建模方法建立了原理样机非线性动态特性模型,该建模方法直接引入结构参数,为直接设计具体的器件建立了理论基础;研究表明该耦合减振器性能优越并具有良好的设计可控性,建模方法可以应用于其它减振器件研究和设计。

STUDY OF TESTING AND MODELING ON THE NONLINEAR DYNAMIC CHARACTERISTICS OF WIRE NETTING-OIL COUPLING SHOCK ABSORBER

A wire netting-oil coupling shock absorber is designed through coupling the wire netting, oil, rubber and metallic elastic components by ingenious tactics to meet the demands of resisting violent impact and attenuating vibration in vibration-impact-safety of electronic-information equipment. The key-model machine is suitable to install in various trends and shows the stiffness and damp in three directions in an installed-trend and it can be applied for aero-purpose. The key-model machine shows the strong nonlinear dynamic characteristics in multi-parameter coupling dynamic tests. Based on this, the nonlinear dynamic characteristics model is established through combining the theoretical analysis and the actual structural parameters are applied in modeling. Analytic result is illustrated to show that the coupling shock absorber has a good dynamic performance and controllable design-capability; in the meantime, the modeling method is suitable to research and design of other shock absorbers.