viscoelastic layer meaning in English
滞弹性层
Examples
- An optimal hankel norm approximation model reduction method is used to reduce the equations of motion to lower order size . it is shown that the method is steady , efficient by numerical emulating . firstly , the influence of viscoelastic layer thickness and material properties , piezoelectric actuator layers thickness on the vibration suppression are investigated
采用最优hankel最小阶逼近降阶法对主被动混合阻尼结构的控制状态方程进行降阶，以附加主动约束阻尼层的梁结构为例，进行了数值仿真，结果表明：该方法是一种稳定的、高效的、鲁棒性很好的降阶方法。 - 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。 - It is shown that vibration suppression efficiency of these kind of treatments depend much more on the viscoelastic layer thickness , material properties and the piezoelectric layer thickness . secondly , a linear quadratic regulator and output feedback are used to actively control vibration . it is shown that placing the active element on the opposite side of pcld or underneath pcld is capable of vibration suppression with lower control effort and more inherent damping
定义了主被动混合阻尼结构控制性能指标：被动抑振性能指标、主动抑振性能指标、控制能量指标和控制力性能指标；然后，基于状态反馈最优控制律，根据定义的控制性能指标分析粘弹性阻尼层厚度、粘弹性阻尼材料参数、压电作动层厚度对主被动混合阻尼结构振动控制性能的影响，得到了一些有价值的结论。