固有频率

In the case of the small angular displacement, the natural frequency of the corresponding undamped linear system is obtained, which is consistent with the experimental observation.

通过讨论与小角位移无阻尼情形对应的线性无阻尼自由振动微分方程，得到了相应的固有频率，与实验结果一致。

In order to analyze the vibration characteristics of the high speed dick system,which was an important component of the submuniton angular motion hardware-in-the-loop simulation,the mechanics model was firstly derived.

为了分析子弹角运动半实物仿真装置中快圆运动系统的固有频率及其对整个装置的影响，利用La-grange方程建立了快圆运动系统的动力学方程，得出该系统的质量矩阵和刚度矩阵，对其进行模态分析；同时利用有限元软件仿真，验证了理论分析结果。

This thesis first proposes the thought of designing the vibration body with anisotropic composite, develops a sample linear Ultrasonic Motor, and studies its actuating mechanism, resonant frequency, speed, and driving force theoretically and experimentally.

本文首次提出了利用各向异性复合材料作为振动体的设计思想，完成了相应的超声直线电机的样机研制，并对其致动机理、固有频率、速度、驱动力等作了深入理论和实验研究。

In this paper, Galerkin method is employed. First, test functions to satisfy natural boundary conditions are selected. Then the approximate analytic formulations of the system frequency are derived. Meanwhile the approximate analytic formulation of the limit velocity is got.

采用直接法，首先选取满足自然边界条件的试函数，而后求出了系统固有频率的近似解析公式，同时也得到了极限流速的近似解析公式。

As an example, an approximate two-order solution for its initial inherent frequency is gained.

作为算例，求出了体系最初两阶固有频率的近似解。

By testing the free response of MRE, the eigenfrequency and the attenuation factor of the structure were obtained.

实验结果指出，实验结构的无阻尼固有频率和MRE的剪切模量随着磁场的增加而增加直到磁饱和；实验结构的阻尼比和MRE的损耗因子随着磁场的增加极缓慢的减小；MRE在磁场作用下，剪切模量变化最大为60％。

The flexural vibration of a circular ring that is of axis symmetry is analyzed and calculated, the solid frequency expression of the flexural vibration is obtained.

对一类轴对称圆环的面内弯曲振动进行了分析计算，给出了圆环面内弯曲振动固有频率表达式。

The transverse dynamic stiffness curve of a ship front shaft bracket ,and the transverse and longitudinal dynamic stiffness cruves of a back shaft bracket are obtained by means of experiment measurements.

采用实验方法对某舰尾轴架进行动刚度测量，得到了前尾轴架的横向动刚度曲线，后尾轴架的横向和纵向动刚度曲线；分析尾轴架的动刚度曲线，可得到尾轴架结构的固有频率。

The transverse dynamic stiffness curve of a ship front shaft bracket,and the transverse and longitudinal dynamic stiffness cruves of a back shaft bracket are obtained by means of experiment measurements.Analyses of these curves make the natural frequencies of the shaft brackets available.

采用实验方法对某舰尾轴架进行动刚度测量，得到了前尾轴架的横向动刚度曲线，后尾轴架的横向和纵向动刚度曲线；分析尾轴架的动刚度曲线，可得到尾轴架结构的固有频率。

The practice of rolling large bar with multiangular pass of blooming mill ;2. Based on the structural design scheme for a type of blooming mill , the structural analysis model is established by means of the FEM software ANSYS.

根据某初轧机的结构设计方案，利用大型有限元软件ANSYS，建立了结构分析模型，得出了该轧机机架容易激发的固有频率与振型，以及承受最大轧制力时的变形程度。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。