Firstly, the damage identification method based on vibration modal analysis theory is discussed and analyzed.
首先，本文对基于振动模态分析理论的损伤识别方法进行了探讨。
Vibration modal analysis technology and neural network technology is a effective instrument to solve damage diagnose.
振动模态分析技术和神经网络技术是解决结构损伤诊断问题的有效工具。
The vibration modal analysis method and the influent factors of the natural frequency of the rotating rotor of horizontal axis wind turbine rotor blades were presented.
建立了大型水平轴风轮转子／塔架耦合系统的气动弹性模型，推导了转子／塔架耦合系统周期系数运动方程，给出了气动弹性稳定性分析方法。
Based on the characters of structure, it analyses the reasons that the application of vibration modal analysis on damage diagnosis is less, and some pieces of advice are proposed.
基于建筑结构的特点，分析了振动模态分析法在建筑损伤诊断中应用较少的原因，并对将来的研究方向提出了几点建议。
However, the studies on vibration modal analysis of frames by means of the MRRM and transient dynamic response of frames made of laminated composite beams have not been reported yet.
然而，用回传波射矩阵法对结构进行模态分析以及用于层合复合材料框架结构动力响应的研究尚未见报道。
Finally, Based the analysis of theory modal, a modal testing program has been designed according to the existing test equipments, which prepares for the next testing of the vibration and noise.
在理论模态分析的基础上，根据现有的试验设备设计了合理的试验方案，为下步的振动与噪声的试验做了必要的理论准备。
The active vibration control of the beam structure, which is used in the isolation of the ships auxiliary machines, is studied by using modal analysis method and adaptive algorithm in this paper.
以船舶辅机的梁式隔振结构为对象，运用模态分析方法和自适应算法，推导并分析了梁式结构振动主动控制的基本原理和方法。
The finite element model of body-in-white of a SRV is established. The implicit frequency and vibration types are obtained by modal analysis.
建立了某运动休闲车(SRV)白车身的有限元模型并进行了模态分析，得到了SRV白车身的固有频率和振型。
In view of the locally severe vibration of a 125 motorcycle, the paper makes a structure modal analysis with ANSYS to get the natural frequency and the vibration mode of the frame.
针对某125摩托车局部振动比较严重，采用有限元分析软件ANSYS，对该款车架进行了结构模态分析，得到车架固有频率和振型。
Structural FE analysis on an integral bus is performed, in which optimal design of multiple performance objectives of structural strength, vibration modal frequency and mass is researched.
对某全承载式大客车进行了结构有限元分析，研究了该客车结构强度、振动模态频率、质量等多个性能目标的优化设计问题。
Modal analysis is used to determine the vibration characteristic of a structure and its components, including the natural frequencies and vibration modes of the structure.
模态分析用于确定设计中的结构及其部件的振动特性，包括结构的固有频率和振型。
The vibration characteristics of propeller blades have been investigated by using experimental modal analysis technique.
本文用试验模态分析技术研究了螺桨桨叶振动特性。
The modal experiment analysis on vibration mechanism will be completed by INV306 intellectualized signal collection and process analysis system for validating the finite element analysis model.
利用INV306型智能信号采集和处理分析系统对振动机构进行模态验证试验分析，以确定仿真模型和分析数据的正确性。
Finally, the CAE models of shield box and single module are established with developed system, and modal analysis, transient analysis and random vibration (PSD) analysis are executed.
最后，利用已开发的系统建立了屏蔽盒类机箱整机和单个模块的CAE模型，分别进行了模态分析、瞬态分析和随机振动分析。
In chapter 4, in order to ascertain its inherent eigenvalue and corresponding main vibration, modal analysis is first implemented for the jib structure of deck crane.
在第4章中先对甲板吊臂架结构进行模态分析，确定结构的固有频率和相应的主振型。
First, using second constrain, the static state and dynamic analysis applied to the frame of a few thickness plates with FEM modal analysis, distortion, stress, vibration and frequency were gained.
首先在第二种约束方式下，利用有限元模态分析方法对几种不同板厚的机架进行了动、静态分析，得到了机架变形、应力及各阶振型与频率。
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。
After the modal analysis of the housing of the SKR-4DL type winding machine with finite element method, the virtual instrument was applied to the on-line vibration property testing on the housing.
采用有限单元法对SKR - 4dl绕线机箱体进行模态分析后，利用虚拟仪器对箱体进行振动特性的在线检测。
Modal analysis is a very effective method for the study of vibration characteristic of impeller blade.
对叶轮叶片振动特性进行研究，模态分析是一种十分有效的方法。
The modal analysis of the wheel is done using the software ANSYS. Calculate the wheel mobility and the vibration velocity spectrum of the wheel and rail is calculated.
运用ANSYS对车轮进行了模态分析，求得车轮导纳以及钢轨和车轮振动速度的功率谱。
In this paper, the authors explore the application of modal analysis to the torsional vibration of shafts.
本文主要是探讨将模态分析用于轴的扭振研究。
Two modal identification methods undergoing ambient excitation are investigated for the object of large structures based on modern experimental modal analysis theory and ambient vibration technology.
本文以大型工程结构为研究对象，以近代实验模态分析理论及环境振动识别技术为基础，着重研究了两类基于环境振动的模态参数识别方法。
The paper applies the vibration theory, modal analysis theory and the technique of vibration testing & signal processing to make an analysis of the calculating modal and test dynamic characteristics.
应用振动理论、有限元方法、模态分析理论对干燥机进行了计算模态分析和动态试验。
Through static, modal and crack stress intensity factor analysis, the vibration stress of blade under rotating state before fracture can be calculated out finally.
然后采用有限元数值计算方法对叶片进行静力分析、模态分析及裂纹应力强度因子计算，最后反推出叶片在旋转状态下振动应力值的大小。
The model is used in modal analysis and we get the sensor's first four modes of vibration and its natural frequencies.
对该模型进行模态分析得出了它的前四阶振型和固有频率。
In this paper a general study has been made for application of the modal synthesis technique to combined vibration analysis for the rotor-bearing-foundation system of a large turbo-generator set.
本文就如何把模态综合技术应用于大型汽轮发电机组转子-轴承-基座系统的联合振动分析作了一般性探讨。
In this paper a general study has been made for application of the modal synthesis technique to combined vibration analysis for the rotor-bearing-foundation system of a large turbo-generator set.
本文就如何把模态综合技术应用于大型汽轮发电机组转子-轴承-基座系统的联合振动分析作了一般性探讨。
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