| 1. | Passive damping of sma hybrid composite lamina
混杂复合材料单层的被动阻尼 |
| 2. | Some design considerations for pure passive and self - sensing active constrained layer damping are discussed
并分析了主被动阻尼控制结构的特点和设计中应崔意的问题。 |
| 3. | Traditional approach to raise damping is installing passive damper between cable and deck , such as viscous ( oil ) dampers
目前增加拉索阻尼的常用办法是在拉索和桥面间安装被动阻尼器，如油阻尼器。 |
| 4. | In phase 1 , the dynamical properties in the time and frequent domains of the simple , two - degree - of - freedom models of passive , " sky - hook " and " ground - hook " damping suspension systems are examined by laplace transform
从理论上分析了被动阻尼、 “天棚”阻尼、 “地棚”阻尼悬架系统的时域和频域动力学特性。 |
| 5. | Considering the nonlinear characteristic of dampers , computing simulation and analysis of the seismic response for high efficient damper suitable for muti - structure system ( hedms ) and system parameters " influence on control effect have been done
考虑阻尼器的非线性滞回特性，对两结构高效被动阻尼控制体系( hedms )的地震反应及体系参数对控制效果的影响进行了仿真分析。 |
| 6. | Abstract : in this paper , recent research limitations of seismic control method of civil engineering structures are examined . and some new suggestion on developing passive damping seismic resistance related to the use of smafhc composite structures are proposed
文摘:对目前土木工程结构抗震设计方法的局限性进行分析，并就发展smafhc复合材料结构的被动阻尼抗震体系提出一些新的建议和设想。 |
| 7. | Hamilton ' s principle are used to obtain equations of motion , which are discretized using finite element method . the frequency dependent damping of viscoelastic layer is modeled using the golla - hughes - mctavish ( ghm ) method and the system is analyzed in the time domain . ghm increases the size of the original system by adding fictitious dissipation coordinates that account for the frequency dependent damping
本文采用ghm模型描述粘弹性阻尼材料的本构关系，根据哈密顿原理分别对附加主动约束阻尼层结构( acld )和主被动阻尼分离结构( acupcld和acopcld ，其中acupcld结构是将压电作动层贴于粘弹阻尼层的下面， acopcld结构是将被动约束层和压电作动层分别贴于梁的上下表面)的梁结构建立了有限元模型，进而得到系统控制状态方程。 |
| 8. | Usually only select states are available and output feedback is used . it is shown that output feedback , while not as effective as full state feedback , is still able to damp vibration . thirdly , virtual vibration measurement and control instrument is developed using lab view and homemade daq , then experiments are performed to validate the conclusion of analysis results
最后，为了验证在理论分析和数值仿真中得到的结论，利用虚拟仪器软件labview和国产数据采集板开发了虚拟振动测控平台，然后对附加主被动混合阻尼的悬臂梁结构，实现了结构振动控制，实验结果表明主被动阻尼分离结构对低阶模态振动具有更显著的控制效果。 |
