模态

Second, dynamic buckling condition is erected after analysis of perfect axial compression member with different boundary conditions, by which dynamic buckling critical load and corresponding buckling modal are obtained. These indicate the difference between dynamic buckling and static one.

其次，通过对不同边界条件理想轴心受压构件进行分析，建立动力屈曲条件，获得了动力屈曲临界荷载及相应屈曲模态，表明了动力屈曲与静力屈曲的差异。

Through the analysis of vibration modality, the results depicts that the conveyor goes cross shake under its first natural frequency, and it also occurs a big deformation at the joint of cone and cylinder sections.

螺旋输送器的模态分析的结果表明螺旋输送器在第一阶固有频率下是发生横向振动，柱锥内筒连接处变形较大。

One of these experiments is that large turbine generator stator end of the two-tier network predigests streamline continuous conical woven conical shell-beam structure or laminated reinforced cone shell model, after experimental modal analysis to identify various parameters

一般来说，力锤的锤头中包含一个压电式力传感器，端部绕组还要安装用于采集振动响应信号的加速度传感器，对两个传感器的信号一起进行频响函数估计，并进行曲线拟合，最后得到被测物的模态参数，根据得到的

Mode convert;piezoelectric drill;ellipticall motion;converse piezoelectric effect

模态转换；压电钻；椭圆运动；逆压电效应

A three degree-of-freedom ultrasonic motor with a cylinder-shaped stator and a spherical rotor is introduced, which uses one first order longitudinal and two second order bending nature vibration modes of the cylinder.

研制了一种一阶纵振和二阶弯振模态组合的圆柱-球体三自由度超声电机。

Therefore, the hybrid method was adopted to determine the equivalent material properties. In this paper, the modal testing and numerical analysis were applied to obtain the Frequency Response Function and to calculate the equivalent spring constant and damping ratio of the suspension.

因此本文针对汽车悬吊部分，先以模态试验法与数值分析方法，将悬吊部分以线性弹簧及阻尼来模拟，并使用混合法，结合实验与数值之结果进行参数调整，在此是以FRF Base 来实施参数调整，确立悬吊系统的等效弹簧系数与阻尼系数。

Validated by the experimental results of direct-connected test for RBCC, a bias less than 10% is acquired, proving the feasibility on the following numerical study.

采用RBCC地面直连实验结果对模型进行了校验，计算结果与实验结果的相对误差小于10％，表明该模型用于火箭引射模态性能分析所获得的结果具有一定的可信度，可用于本文的后续研究。

When the seismic intensity in vertical direction takes a high ratio,it is hard to accurately estimate the maximum displacement demands on structure by the traditional Pushover method.

通过对其进行改进，提出首先对结构按一定方式施加竖向地震引起的惯性力，随后进行结构水平向的多模态推覆分析，并按SRSS方法计算其最大位移需求。

Both theoretical and experimental analyses on the natural frequencies and modes of the disk-shaped bevel gear are presented by using thick conical shell theory considering transverse shear d-eformation and rotational inertia, and using experimental modal analysis respectively.

本文介绍了用考虑横向剪切变形和转动惯性的厚锥形壳理论来分析盘形锥齿轮的振动固有频率和振型，并用试验模态分析技术进行测量。

The vibration characteristics of the rotor system of the dredge pump in a dredger (1750 m3/h) are calculated and analyzed by using FEM.

主要研究内容包括： 1、介绍了旋转机械中各种典型故障产生的机理及识别特征，对信号处理及分析的方法进行了研究； 2、采用有限元方法对泥泵转子轴进行了模态分析和谐响应分析。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。