Characterising elastic layers as non‐lightly damped SDOF systems for the reduction of impact transmission noise
Characterising elastic layers as non‐lightly damped SDOF systems for the reduction of impact transmission noise
复制标题
将弹性层表征为非轻阻尼 SDOF 系统，以减少冲击传递噪声
DOI：
--
复制
发表时间：
2008
期刊：
影响因子：
--
通讯作者：
D. K. Anthony
中科院分区：
文献类型：
--
作者：
F. Simón;D. K. Anthony
目前已有大量文献研究了轻阻尼粘性系统的振型确定问题，但针对中、重度阻尼型系统或非粘性阻尼型系统的研究报道相对较少。在确定高阻尼系统的固有频率和阻尼比时，最常用和最常用的方法都存在较大误差。对于轻阻尼的情况，通常可以方便地进行简化，以便从理论上研究每种方法的性能，但对于非轻阻尼的情况，这是不可能的，分析必须在启发式的基础上进行。为了应用冲击试验确定弹性楼板的模态参数以降低建筑物的传递噪声，提出了传统的和新的非轻量级的模态参数确定方法，并对粘性和非粘性单自由度系统进行了启发式的评价。它还表明，性能往往取决于阻尼器的类型。这也是..。
There is a wealth of literature dealing with modal determination of lightly damped viscous systems, however there is relatively little reported for medium and heavily damped systems or with non‐viscous damping. The most commonly reported and applied methods have significant errors in the determination of both modal frequency and damping ratio for systems with high damping. For the lightly damped case simplification can be often conveniently made to allow the performance of each method to be studied theoretically, however for the non‐lightly damped case this is not possible and the analysis must proceed on a heuristic basis. For the application modal parameter determination of elastic floor layers designed to reduce building transmission noise by impact testing, traditional and new methods of modal parameter determination for non‐lightly are presented and heuristically evaluated for both viscous and non‐viscous SDOF systems. It is also shown the performance often depends on the type of damping. This either...