固有频率

This paper describes in detail the working principles,structure and frequency response characteristics of an eddy geophone.

本文详细地介绍了涡流地震检波器的工作原理、结构及其频率响应特性——涡流检波器的输出特性在固有频率之上是按外界激励频率的平方递增。

The analogue results obtained from the water turbine in Gezhouba have been used by the author in his evaluation of the vibration characteristic of turbine blade and a nomographic chart indicating the relationshi...

作者将葛洲坝水轮机叶片模态分析结果，应用到叶片振动特性的估价中，绘制了转速及其派生的频率，卡曼涡频率与叶片固有频率关系的诺模图，可供设计参考。

Based on a series of industrial experiments, the chattering of a temper rolling mill has been studied.

对某平整机的颤振进行了一系列工业试验研究，分析计算了平整机的振动频率、固有频率以及可能的外激励频率。

The fre-quency equations are derived according to stress match, consid-ering gear as a thin bar and adopting exponential horn. Then the influences of vibration of transformer which consists of horn and gear are explored, which come from the length of horn and the machining frequency. It has been discovered that the reso-nance frequency of the horn is the detune one of transformer and the resonance frequency is not same as one of horn, which provide theoretical rules for transformer design.

鉴于此，根据应力耦合，将齿轮作为圆盘，采用指数型变幅杆，推导频率方程，对变幅杆的设计长度和变幅器振动频率进行数值分析，发现变幅杆的共振频率恰好是变幅器的失谐频率，变幅器的共振频率与变幅杆的固有频率也不相同，这能够为超声珩齿变幅器的设计提供理论依据。

Liu JunHua;Huang ShuGong;Liu JiDongA tri-dimensional model for a jeffcot rotor was reported. A new motion equation of the torsional vibration with natural retation and the conception frequency was presented. The natural frequencies of disk rotors with different geometrical structures and were computed based on the finite-element method, and the factors affecting the coefficient of the natural frequency with rotation were analyzed.

在转轴以一定速度旋转的条件下，推导了考虑转动频率情况下的单质量盘转子扭振运动方程，通过有限元方法对不同几何结构的单质量盘转子在不同转动频率下的扭振固有频率进行了计算，对影响单质量盘转子扭振动频的动频系数进行了分析。

The result indicated that frequency of fish-shaped cable truss support system would decrease, resulting in increase of temperature.

算例表明，预应力鱼腹式索桁架支承体系固有频率随着温度的升高而减小，具有较强的非线性，其自振频率随着振幅发生变化，其非线性振动呈现&硬弹簧&特性，非线性自振频率高于线性振动频率。

A design of temperature sensor with differential output is given, and its sensitivity as the function of temperature is analyzed theoretically and simulated. The theoretical model of response characteristic of viscous damping microbeam system under periodically driven force is built.

在此基础上，进一步从理论上分析了残存应力对微桥固有频率的影响，推导了微桥固有频率同温度的函数关系，提出了一种差动式谐振温度传感器的设计构想，并对其灵敏度随温度的变化进行了理论分析和模拟计算。

The end linking the timing gears cap, the side wall of cylinder and the skirt section of the engineblock are the sound radiation resources of the two engineblock sides. Except that, this thesis calculates sound power level of radiated noise from the engineblock with MATV method. It is found that the noise radiated from the engineblock is slightly loud.

此外本文还应用MATV法计算了气缸体辐射噪声的声功率级，通过声功率级的计算发现：气缸体的辐射噪声偏高，达到了108.84dBA，并且在850Hz时，由于气缸体的激励频率与其第八阶固有频率相等，气缸体发生了共振，因而在该频率时，气缸体的辐射噪声最大，所占气缸体表面辐射噪声总能量比重也最高，该频率应该是本文噪声控制关心的重点。

This paper introduced the parameter frequency response method,developed ship rolling frequency response function equipped with two U-tube anti-rolling tanks with different natural frequencies,analyzed the tank parameters relative to rolling frequency response amplitude,and researched the effect of tank parameters on the ship rolling amplitude.

本文给出了参数频率响应法，推导了装备两个具有不同固有频率的被动式U型减摇水舱的船舶横摇频率响应函数，分析了影响船舶横摇频率响应幅值的水舱参数，通过仿真详细研究了水舱参数对船舶横摇减摇的影响。

The first and second natural frequencies are analyzed accounting for the rotation inertia and shear deformation of Timoshenko model.

本文还讨论梁弯曲振动前两阶固有频率随着梁的刚度变化的情况，并分析梁转动惯量及剪切变形等参数对固有频率的影响。

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。