Some modal natural frequencies and damping coefficients of a structure are derived by means of in-sita testing displacement records and the time domain identification technique.
本文根据原型振动实测的位移记录，应用时间域识别法，求得了结构的前几阶模态的固有频率和阻尼比。
A rigid body parameters identification method based on muhi-reference least-squares frequency domain scheme (one of the operational modal analysis techniques) is presented.
介绍一种基于多参考点最小二乘频域法(一种工作模态法)的刚体参数识别方法。
In this thesis, the dynamic load identification of guyed mast method in time domain based on modal analysis is analyzed.
要解决这个问题，必须建立作用在桅杆结构上的动力风荷载的识别方法。
Operational modal analysis method of bridge was built based on frequency domain and spatial domain decomposition.
利用频域-空间域分解法，建立桥梁运行模态识别方法。
It Outlines the fundamentals and the basic mathematical model of identifying modal frequency and damping by means of parameter identification with frequency domain and time domain.
简要介绍了用频域参数识别方法和时域参数识别方法识别模态频率和阻尼的基本原理和基本数学模型。
In this paper, complex modal analysis for dam-foundation interaction problem in time domain is presented, and effects of dam-foundation interaction on modal characteristics of the dam are discussed.
本文提出在时域内分析水坝与地基动力相互作用问题的复模态分析方法，讨论了水坝与地基动力相互作用对水坝模态特性的影响。
A method to treat stochastic dynamic equation of complicated structure by means of modal truncation method and to compute response statistics of dynamic system in the time domain is presented.
本文提出了用模态截断法处理复杂结构的随机振动方程、及时域上计算系统随机响应的方法。
A time domain model developed using experimental modal parameters to simulate tire and vehicle dynamic performance was used to develop the transient response equation for different lateral inputs.
在利用试验模态参数建立的轮胎侧向非稳态模型基础上，推导了用于计算不同侧向输入的时域瞬态响应公式。
A new approach is presented for feature extraction from sound signals generated by the structure sound radiation in frequency domain using modal frequency.
提出了一种基于模态频率的声信号频域特征信息提取方法，并将该方法用于堆垛机结构的冲击载荷分类识别研究。
Modal parameters and vibration type were obtained by the method of least squares time domain, complex modal analysis and the experimental data.
并利用时域最小二乘法和复模圆法对实验数据进行了三维的模态参数和振型分析。
The effects of the stress domain structure of the fiber on stress birefringence and modal birefringence are investigated and compared .
分析了光纤应力区结构对纤芯双折射大小和均匀性的影响，并将应力诱导双折射与模式理论计算结果进行了比较。
This paper deals with the stability lobes in turning and milling and their features obtained under different structural modal parameters by the time domain simulation method.
文采用时域的数字仿真方法，系统地计算了车削、铣削的稳定图，分析了机床不同结构模态参数匹配下稳定图的特点。
A new choice approach for embeddable position of audio watermarking scheme in the DCT domain based on research of IDCT maximum error modal is proposed.
本文在DCT最大误差模型研究的基础上提出了一种新的音频水印嵌入位置选择策略。
Recently the modal test of the large structure parts is one of the hot themes in the vibration domain.
对大型结构件做模态试验是近年来振动界的热门话题之一。
Recently the modal test of the large structure parts is one of the hot themes in the vibration domain.
对大型结构件做模态试验是近年来振动界的热门话题之一。
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