确定基础耦合振动固有频率的迭代法及系统参数的反应幅值法

本文包括两部分。第一部分提出了求解基础耦合振动系统固有频率的一个迭代解法,该法运算简单,对一般阻尼振动问题的收敛性很好,适宜于工程计算的应用。第二部分提出了用基础角点位移反应幅值确定基础耦合振动系统参数的分析方法,以免除相角的测量。

Methods of Finding Natural Frequencies of a Foundation under Coupled Vibration with Iteration Procedure and Determining Parameters of the Foundation with Amplitude Responses

This paper covers two parts. The first part presents an iteration method for finding the natural frequencies of a foundation under coupled vibration.The operation of the iteration is simple and convergent rapidly for general damped vibration problems and appropriate to engineering use.In the second part, a method has been proposed to determine the parameters of the foundation mentioned above with its amplitude responses of displacement at corners, so that the phase measurements can be avoided.