采用假设模态法建立系统的运动微分方程。
The assumption mode method is utilized to derive the motion equations of the structure.
目前工程上对结构进行缺陷稳定分析的主要办法是一致缺陷模态法。
The consistent imperfect buckling analyses method (CIBAM) is the main approach of analyzing the stability of the structure with the geometrical imperfection.
结果表明可以应用曲率模态法和柔度曲率法对梁类结构进行多损伤识别。
The results show that the multiple damaged locations of the beam can be diagnosed effectively by means of curvature mode and flexibility curvature.
采用假设模态法验证了理论分析结果并得到了分岔临界值和近似后屈曲解。
Assumed modes method was employed to validate the theoretical result and analyze the approximately critical bifurcation value and the post-buckling equilibria.
另外，还提出了在模态法和颤振法中基于发散特征向量的结构模态选取原则。
Besides, the principle to select the number of structure modes based on the divergence eigenvector in the mode method and the flutter method is produced.
采用假设模态法对旋转运动柔性梁的动力特性进行研究，给出简化的控制模型。
In this paper, dynamics of a rotating flexible beam is investigated by the assumed mode method.
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。
A rigid body parameters identification method based on muhi-reference least-squares frequency domain scheme (one of the operational modal analysis techniques) is presented.
为了研究此系统的扭转振动，运用拉格朗日方程和假设模态法建立了系统的动力学方程。
To investigate the torsional vibration of the system, the dynamics governing equations of the system is established using the Lagrange equation and the assumed mode method.
采用假设模态法建立耦合控制方程。分析系统的颤振临界流速随间隙和板厚的变化规律。
Coupling control equation of system was presented based on assumption method and change tendencies of critical velocity for flutter with both gap and the thickness of beam were discussed.
以分枝模态法为基础，将全弹分成弹身、弹翼和舵面三个分枝，建立全弹结构动力学模型。
The branch Mode Method is used to reckon missile's structural dynamic characteristic, and the whole missile is regarded to be composed of three branches-the fuselage, the wings and the rudders.
建立杆件锈蚀和弯曲的计算模型，提出并采用随机缺陷模态法研究具有缺陷的结构承载能力。
Taking the example of a practical engineering, this paper studied the influence of imperfection to the strength and stability of structures…
初始缺陷的模型是根据一致缺陷模态法，按最小特征值屈曲模态分布，并控制其最大值的方法确定。
Based on the consistent mode imperfection method, the initial defect model was determined by the least order mode of eigenvalue buckling, and the maximum displacement value.
由自感知电压引入速度负反馈闭环控制，并由假设模态法将位移按模态展开，求解了悬臂梁结构的动态特性；
The mathematical models based on the assumed modes method and a closed loop velocity feed back control law are developed to describe the flexural vibration dynamic behaviors.
本文研究一个两跨板状简单模型在不可压缩流中振动时的固有动特性。 应用假设模态法建立系统的运动微分方程。
The dynamical characteristics of a simple two-span parallel flat plate-type model vibrating in incompressible water are studied here.
将此方法应用于复合材料加筋结构的冲击载荷识别，加筋结构等效为材料性质不均匀分布的层板结构，采用假设模态法建立正向冲击响应模型。
The stiffened composite panel is modeled as an equivalent laminate with varying properties and the forward impact response is obtained using an assumed mode approach.
提出并建立了损伤位置直接指标法、局域应变模态面积损伤程度直接指标法。
Based on strain mode shape (SMS), the direct index methods of damage location and degree detection are presented and founded.
介绍了有限元法在微型扬声器振膜模态分析以及声响应分析中的一些应用。
Some applications on fem in the micro loudspeaker modal analysis and the acoustic response simulation are introduced.
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.
本文建立了一种“利用约束结构试验获取自由结构试验模态的伽略金法”(简称GMTCF)。
This paper established a Galerkin method for transforming constrained-structure test modes to free-structure test modes (GMTCF).
此外，还提出了一种新的降阶方法：快、慢模态降阶法(SFMOR)。
Further more, this paper develops a new order reduction method: slow-fast mode order reduction (SFMOR) method.
本文应用有限元法在I - DEAS软件平台上对MWM395柴油机机体进行了模态分析。
In this paper, the mode character of MWM395 engine block is analyzed with the finite element analysis on the platform of I DEAS.
在较特殊的条件下，与复模态分析法的结果是一致。
The results here are consistent with those given by the complex modal analysis method when it is applicable.
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。
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.
考虑的具体方法是将PD反馈波控制与基于极点配置法设计的模态控制相结合。
The particular approach considered is that of collocated, PD feedback wave control combined with modal control designed using pole placement.
采用动态应变测试和试验模态分析法对QTZ80型塔式起重机进行振动测试和分析，并通过实验结论验证其理论分析的正确性。
Vibration measurement and analysis of QTZ80 tower crane is conducted through dynamic strain test and experimental mode analysis. The correctness of theoretical analysis has been proved by the results.
最后利用基于加速度响应的ITD法识别结构的模态参数：频率和振型等。
At last, ITD method based on free acceleration response is used to identify mode parameters, frequencies and modal.
利用单元局部频率变化率法和单元模态应变能比法，对连续梁桥进行了损伤诊断的数值模拟研究。
Based on element local frequency change ratio method and element modal strain energy ratio method, numerical study is carried on to detect the damage of the bridge.
在识别中采用了实模态识别法，识别出前13个模态参数，并与稳态激振、环境振动及有限元计算进行了比较，结果是比较符合的。
Real modal parameter identification has been used and 13 modes are identified. The obtained modes are compared with the results from steady exciting, ambient vibration and FEM calculation.
本文采用了单位脉冲响应函数法识别模态参数，由所建数学模型的特征方程识别结合部的物理参数。
The impulse response method is adopted to identify the modal parameters, and the physical parameters are estimated from the characteristic equation of the mathematical model built.
本文采用了单位脉冲响应函数法识别模态参数，由所建数学模型的特征方程识别结合部的物理参数。
The impulse response method is adopted to identify the modal parameters, and the physical parameters are estimated from the characteristic equation of the mathematical model built.
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