The paper studies digital processing methods which identify structural modal parameters from structural random response.
本文研究在未知激振力情况下，由结构随机响应识别结构模态参数的数字处理方法。
The testing of structural modal parameters is an important basis of dynamic response analysis and structural damage detection.
结构模态参数的测试是进一步进行结构动力响应计算、结构损伤检测等的重要基础。
The minimum stability limits of stability lobes in milling based on constant and varying orientations are quite different and vary with Structural modal parameters.
对刀齿采用平均方位和瞬时方位两种假设，所计算出的铣削稳定图进行比较表明，其最低稳定边界相差很大，并且随结构模态参数不同而异。
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。
Based on this, bring forward the BP neural network structural damage detection method based on modal parameters.
在此基础上提出了基于模态参数的BP神经网络结构损伤识别方法。
Strain modal test is applied to diagnosing the position and degree of structural damage, in consideration of the displacement modal parameters being insensitive to damage.
针对位移模态参数对结构损伤欠敏感，应用应变模态试验技术诊断结构损伤位置和程度。
Based on modal synthetical method and experimental modal analysis, the main parameters of dynamic vibration absorber on a cantilever plate and on a structural model are optimized in this paper.
本文运用模态子结构综合法进行结构动态计算和用实验模态分析法进行模型试验，对悬臂平板和结构模型的动力吸振器主要参数进行了比较系统的优化研究。
The research of dissertation also includes structural modeling referring to modules of structure model input and modal parameters output.
本文还对结构模型输入和模态参数输出模块中涉及到的结构建模进行了研究。
Modal models describe structure inherent dynamic characteristics, thus structural damage will result in changes in modal parameters.
模态模型描述机械结构的固有动态特性，结构损伤将导致模态参数的变化。
It is indicated by a numerical simulation of the cantilever flexible-shear structural damage identification that only low-order modal parameters are needed to identify effectively a structural damage.
通过一个悬臂弯剪型结构损伤识别的数值模拟表明，只需低阶模态参数就可有效地识别结构损伤。
Using MATLAB6.5 BP neural network toolbox, compiles the structural damage detection process with the input parameters based on the modal parameters of frequency and mode shape.
以MATLAB6.5BP神经网络工具箱为基础，编写了基于频率平方变化和振型模态分量为输入参数的BP神经网络结构损伤识别程序。
Eigenfrequency, vibration pattern and damping ratio can be got by modal experiment. Then, these parameters can be used to structural design and optimization.
通过模态试验，可以计算出结构的固有频率、模态振型、阻尼比等参数，为结构设计与优化打下坚实的基础。
It is indicated by a numerical simulation of the cantilever flexible shear structural damage identification that only low order modal parameters are needed to identify effectively a structural d...
通过一个悬臂弯剪型结构损伤识别的数值模拟表明，只需低阶模态参数就可有效地识别结构损伤。
Based on the measured modal data from prototype testing, the updated finite element model of the bridge has been significantly improved by modifying of uncertain structural parameters.
基于该桥现场测量的模态数据，修正后的有限元模型获得了较好的改善。
Then modal analysis is performed by using finite element method. In this way, the relations between parameters and structural vibration frequency are figured out by parameter analysis.
利用有限元计算软件进行了结构模态分析，通过参数分析找到了各参数与结构振动频率之间的关系。
Then modal analysis is performed by using finite element method. In this way, the relations between parameters and structural vibration frequency are figured out by parameter analysis.
利用有限元计算软件进行了结构模态分析，通过参数分析找到了各参数与结构振动频率之间的关系。
应用推荐