模态是结构的固有振动特性，每一阶模态都具有特定的固有频率、阻尼比、振型、模态刚度和模态质量。
Mode is structure's inherence characteristics, each mode has specifically resonant frequencies, damping values, mode shapes, mode stiffness and mode mass.
依据设计原则，利用模态刚度矩阵、模态质量矩阵和模态频率相似进行了扭振模拟机轴系的设计，扭振模拟机轴系前三阶固有特性与实际机组轴系扭振动特性基本一致。
By modal stiffness matrix, modal mass matrix and modal frequency, shaft units of simulator is designed. The former three steps natural characteristics are identical with the real units'.
从根本上讲，这些特性依赖于结构的质量和刚度，它决定了固有频率和模态振型何处存在。
Basically, there are characteristics that depend on the weight and stiffness of my structure which determine where these natural frequencies and mode shapes will exist.
当然首先每个人都说过，如果你增加任意系统的刚度，那么模态必然向上迁移，因为。
Of course, the first thing that everyone stated was that if you increase the stiffness of any system, then the modes must shift upwards because.
当支持弹簧刚度变得越来越大时，随着弹性体属性变得越来越突出，刚体模态属性将减少。
When the support spring stiffness gets larger and larger, the rigid body mode characteristic will diminish as the flexible characteristic becomes more pronounced.
把复模态分析法推广到刚度矩阵可以奇导且质量矩阵、阻尼矩阵和刚度矩阵均不必为对称的情形。
The complex modal analysis method is generalized to the cases in which stiffness matrix may be singular and mass matrix, damping matrix and stiffness may be nonsymmetric.
为使第二阶模态频率避开发动机一阶惯性力频率，文中对扶手架的质量、刚度进行局部修改，结果使手把振动有较大幅度的下降。
To separate these frequencies, we make a local modification to mass and stiffness of the handle and results in the vibration on the handle of walking tractor to reduce considerably.
梁的应力应变参数与其刚度存在直接关系，因而应变模态测量可望用于桥梁损伤检测。
The stress and strain parameters of girder have direct relationship with its stiffness. So the strain information of bridges can be applied to damage detection.
对一个包含固定结合面的具体结构，利用有限元分析程序计算了结合面刚度参数和结合面位置对结构模态的影响。
By using finite element analysis program, the models for computation of stiffness parameters of a specific structure with a fixed joint surface are developed.
误差分析表明，如果模态试验结果具有足够的精度，用本文方法能够准确地实现结构边界支承刚度识别。
The error analysis proves that this method can realize the exact identification of the structure boundary support stiffness if the modal test results are of enough accuracy.
随动部件是模态悬挂测试系统机架部分的关键结构，其刚度和强度直接影响了整个系统的性能。
The follow-up unit is the essential structure of the rack section of modal analysis test suspension system, its rigidity and intensity directly influence overall performance of system.
本文提出一种基于模态展开和幂级数展开的混合方案，用于简化结构凝聚动刚度的计算。
A mixed scheme based on fixed mode expansion and power series expansion is suggested to simplify the calculation of the condensed dynamic rigidity of a structure.
通过有限元对其进行强度、刚度及动力学模态的分析，并以此进行了优化设计。
By FEM analysis for its intensity, rigidity and kinetics model, it has been optimized, practice shows that it is a successful design.
提出一种基于不完全模态测量数据同时修正有限元质量矩阵与刚度矩阵的有效数值方法。
An efficient numerical method for simultaneously updating mass matrix and stiffness matrix of a finite element analytical model based on incomplete modal data measured is presented.
利用ANSYS软件对某进口微型电动轿车车身骨架进行了强度、刚度和模态计算。
The computation of strength and stiffness and modal analysis for the body framework of an imported electric mini-car were carried out by using ANSYS software.
为了解决模型修正中所需要模态数据不足的问题，提出了一种基于附加已知刚度的模型修正直接方法。
In order to solve the problem of insufficient measured modes in the dynamic model updating, a direct model updating method using added known stiffness components is proposed.
对轿车车身进行刚度、模态特性的分析，可以指导人们对车身结构进行优化。
The analysis of the stiffness and modal characteristics of car body is the guidance for optimization of car structure.
结合面法向刚度大小的参数对纵向振动模态的影响比对弯曲、扭振模态的影响显著；
The parameters reflecting normal stiffness have more obvious effects on extensional vibration mode than those on flexural mode and torsion mode.
刚度的减小自然伴随结构自然频率的减小和结构模态振型的转变，相应结构的动力响应也会出现转变。
With the reduction of natural frequency stiffness and transformation of modal shape structure, the corresponding of the structure can also be changed.
通过研究主要零部件对结构扭转刚度及低阶模态的影响，明确了车身结构设计中的主要影响因素。为轻型客车车身设计提供了参考依据。
By studying the influence of some of the main components, the influence factors of the modal and static stiffness in the body structure design are found.
耦合非线性模态的分叉既与调谐参数有关又与模态振幅有关，但与非耦合弹簧的非线性刚度无关。
The bifurcation behavior of the coupled nonlinear normal mode is associated with detuning parameter and mode amplitude, but not with the nonlinear stiffness of uncoupling spring.
而结构发生损伤就表现在刚度变化上，所以结构的损伤识别可以用曲率模态的变化来判别。
While structure damage is reflected by the change of stiffness. Sothe curvature may detect the damage of structure.
分析了符合轻量化设计要求的新型的半承载式车身结构的刚度与模态。
The stiffness and modal analysis of the new type body structure which is designed according to the light weight demand is performed.
弹性介质刚度不仅对充液圆柱壳的实固有频率影响显著，而且影响其截止轴向模态。
The rigidity effect of surrounding elastic medium is remarkable not only to the real characteristic frequencies of cylindrical shells but also to the cut-off axial mode.
提出了由拉索实测振动频率同时识别出拉索索力和抗弯刚度的模态参数识别法。
This study presents a modal parameters identification approach which can identify the cable tension and bending stiffness simultaneously only from the cable frequencies.
结果表明，大跨度楼盖具有典型的模态密集特性，本例中木地板的刚度贡献可以忽略。
It is found that the large-span floor has very closely-spaced modes of vibration, and the contribution of wooden floor to the total floor stiffness is neglectable in this case.
本文介绍了承载车身强度、刚度和模态分析的方法。
The paper studies the strength, rigidity and modes of the structure by using FEA.
具体是采用非经典理论推导出FRP -RC复合梁的抗弯、抗剪刚度，然后提出结合ANSYS软件的FRP -RC结构有限元模态分析方法。
The non-classical theory is used to deduce the stiffness of FRP-RC composite beam, and with the help of CELL BEAM23 in software ANSYS the mode calculating method is brought forth too.
具体是采用非经典理论推导出FRP -RC复合梁的抗弯、抗剪刚度，然后提出结合ANSYS软件的FRP -RC结构有限元模态分析方法。
The non-classical theory is used to deduce the stiffness of FRP-RC composite beam, and with the help of CELL BEAM23 in software ANSYS the mode calculating method is brought forth too.
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