At last, ITD method based on free acceleration response is used to identify mode parameters, frequencies and modal.
最后利用基于加速度响应的ITD法识别结构的模态参数：频率和振型等。
Structural free vibration characterization and seismic response were calculated by means of beam-plate linear mathematical model of finite element method.
采用梁、板线性有限元数学模型计算了结构自振特性和地震响应。
A new method of estimating characteristic parameters for continuous spectrum of response signal of damped free vibration is presented in this paper.
针对自由衰减振动信号的连续谱，提出了一种估计特征参数的方法。
This paper presents a digital method to calculate the EM response of a three-dimen-tional conducting permeable body which is subjected to an alternating magnetic dipole field in free space.
本文提出一种关于自由空间三维导电导磁体在谐变磁偶极场中电磁响应的数值计算方法。
In this paper the cord element method is used to study the sensitivity of the free vibration property and dynamic response of the free hanging systems.
应用弦单元计算了自由悬挂系统的自振特性，进行了敏感性分析，并研究了动力响应。
In this paper the cord element method is used to study the sensitivity of the free vibration property and dynamic response of the free hanging systems.
应用弦单元计算了自由悬挂系统的自振特性，进行了敏感性分析，并研究了动力响应。
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