模态阻尼 meaning in English
m
Examples
- Adaptive modal damping control experiment for piezoelectric structures
压电结构的自适应模态阻尼控制实验 - As to the polyreference implemention of the least - squares complex frequency - domain estimator in mathematical separation technique of modes , this thesis builds a right matrix - fraction description model to estimate the system poles . then frequency point stabilization diagram is set up and analyzed to automatically determine natural frequencies , modal damping ratios and modal participation factors . finally mode shapes are identified based on the least squares theory
对于模态数学分离技术的多参考点最小二乘复频域识别技术,先建立右矩阵分式频响模型,识别出系统极点,再通过建立和分析频率点稳态图,能自动的确定出结构的固有频率、模态阻尼比和模态参与因子,最后根据最小二乘原理识别出模态振型向量。 - The relationships of modal damping versus the stiffness of cables , the attachment height of damper and damping constant are obtained . with the optimal structural control method , a new approach to determine the optimal damping constant of viscous damper is presented . the first a few modal damping can be optimized simultaneously under the optimal damping constant of damper , which is more convenient than the existed design method
4 、对拉索-粘性阻尼器系统的动力特性进行了研究，得到了拉索刚度、阻尼器安装高度及阻尼系数等参数对拉索系统模态阻尼比的影响规律；根据最优控制原理，提出了一种确定阻尼器优化阻尼系数的方法，该方法确定的阻尼系数能保摘要证前几阶模态阻尼比得到整体优化，改进了现有的设计方法。 - The research of approach to monitor bridge health state has become a hot spot which social and technologic people have explored through the theory of , dynamics of structures and the lest technology . structure mode parameters ( vibration frequency , mode of vibration and damping ) are the functions of physical property parameters ( mass , rigidity , damping ) . the damage of structures certainly leads to the transformation of physical property parameters
结构模态参数(振动频率、振型和模态阻尼等)是结构物理特性参数(质量、刚度、阻尼)的函数，结构损伤必然导致结构物理特性的变化，即结构参数发生改变，利用现代的测试技术准确地测出这些参数变化，就可对桥梁损伤状况进行评估，应变模态方法识别桥梁损伤就是基于这种理论提出的，本文所做的主要工作为： 1