摘要
本工作是在一个小的混凝土地板上,测量了8个不同位置的力导纳.采用现场求平均和计算机求平均两种方法获得平均导纳曲线.同时,还用计算机计算了它们的最大值.为了对力导纳的预测,计算了特征导纳和导纳上限,结果表明:特征导纳是测量值的很好近似.可以用来预测结构声的发射,导纳上限计算值,可以用来预测结构声发射的上限.
In this paper Force mobility measurement has been carried out at eight different positions on a small concrete floor.The average mobility curve obtained both on-the-spot and on the computer,and the maximun mobilities obtained by means of the computer are presented.In order to predict Force mobility,the characteristic mobil- ity and the mobility upper have been calculated.The results indicated that the characteristie mobility is a good approximation to the measured results and can be used for predicting the structure-borne noise emission,and the calculated value of the mo- bility upper can be used to predict the structure-borne noise emission upper.
出处
《汕头大学学报（自然科学版）》
1991年第1期32-36,共5页
Journal of Shantou University：Natural Science Edition
关键词
结构声发射
力导纳
噪声
机器振动
Structure-borue noise emission
Prediction
Force mobility
Characteristic mobility
Power flow
