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。
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 Known conditions of the product, by using the FE? Modal synthesis and vibration modal congruence theories, this article explores a new product frailty solution.
从产品已知条件出发，利用有限元、模态综合法和振型叠加法等理论，探索出求产品脆值的新方法。
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。
This paper introduces the design of D4114ZLQB Diesel engine's mount system and ail-rubber mount, the vibration modal of engine-mount system analysis is also discussed in the paper.
本文介绍了D 4114z_lqb柴油机隔振系统方案和橡胶隔振器的设计，并对柴油机、隔振器系统的振动模态进行了计算。
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。
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。
A good example of this brings to mind a recent modal test on a troublesome torsional vibration shaker system.
这个很好的例子使我想起了近期的一次模态试验，试验是在一个棘手的扭转振动台系统上进行的。
The identification of modal parameters of a vibration system by means of random response and free response signal is discussed.
本文讨论利用振动系统的随机响应和自由响应信号识别系统模态参数问题。
Because the structure vibrates at some modal, a vibration peak value will appear at its noise frequency spectrum.
这是因为结构以某一阶模态振动时，将在其辐射噪声频谱上出现一个峰值。
This paper presents a synthesized model updating method using the modal parameters and frequency response functions(FRF) extracted from the vibration test data.
文章提出了一种利用模态参数和由振动试验数据求得的频响函数来进行模型修正的方法。
A simple method for computing the modal vibration frequencies and sound radiation efficiencies of a thin cracked baffled plate in water is described.
本文提出了一种简便计算置于无限大障板上裂纹薄板水中振动频率和模态辐射效率的计算方法。
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。
After testing the intrinsic characteristic of power assemblys flexural vibration of a light passenger coach with modal cognition technology, a damping power shock absorber is designed.
应用模态识别技术对某轻型客车动力总成弯曲振动的固有特性进行了测试，设计了一阻尼式动力吸振器。
The results indicate that the simulation results are close to the experimental ones that the modal can be used for simulation of vibration test with attached structural members on it.
仿真结果表明，空台正弦扫描试验仿真得到的台面各节点加速度幅值与试验结果比较接近，所建立的模型可用于试件振动台试验仿真。
The vibration transmissibility of the conical shell with composite material honeycomb structure is investigated by modal experiment and vibration table experiment.
通过模态试验和振动台试验，对复合材料蜂窝结构锥形壳的振动传递特性进行了研究。
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。
The experiments include modal tests, vibration tests by knocking, shaking table tests by inputting white-noises and seismic waves, and tests of cable forces and vibration frequencies.
进行了模态实验、敲击激振实验、白噪声和地震波输入的振动台实验，以及缆索拉力和振动频率的测试。
A flexible model of multi-axle vehicle ride comfort is presented by combining the vibration theory of elastic beam and modal analysis method.
运用弹性梁弯曲振动理论和模态分析法建立了多轴汽车平顺性分析的柔性模型。
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。
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。
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。
Cable local vibration has little effect on the modal frequency, but more on the modal energy distribution.
索的局部振动虽然对结构主要振型的频率影响不大，但对振型能量分布有比较明显的影响。
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。
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。
Based on practical structure can be regarded as the stack of multiple vibration mode, a new concept of modal curvature sensors with optical fiber is proposed to measure vibration mode.
因此基于结构的振动是多个振动模态按一定比例线性的叠加的理论基础，提出了一种新型传感器，分布式光纤曲率模态传感器用于薄结构的振动测量。
By simulating the track irregularities with trigonometric series method, the train-bridge coupling vibration equations are established based on the combined modal of train formation and the bridge.
利用三角级数法模拟了轨道的不平顺，采用列车编组和桥梁组合的模型，建立了车桥耦合振动方程。
By simulating the track irregularities with trigonometric series method, the train-bridge coupling vibration equations are established based on the combined modal of train formation and the bridge.
利用三角级数法模拟了轨道的不平顺，采用列车编组和桥梁组合的模型，建立了车桥耦合振动方程。
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