Identification of dynamic natural frequencies and viscosity damping coefficient for a large-scale structure in practical working condition is a very difficult problem.
大型构件在实际工作环境中的系统动态固有频率和粘性阻尼系数辨识一直是一个“棘手”的问题。
Using this method not only the natural frequencies, mode shapes, dynamic responses but also the whirl orbits of the rotor system can be obtained.
用本文提出的方法，不仅可以求得系统的固有频率、振型、动态响应，还可以模拟轴上各点的涡动轨迹。
Authors suggest a practical method based on dynamic analysis of finite element for modifying natural frequencies of hull grillage beam, and its software is completed.
提出一种基于有限元结构动力分析的船体板架固有频率实用修改方法，并进行了软件设计。
The dynamic transfer matrix can be used for calculation of exact natural frequencies and mode shapes for asymmetrical thin-walled beams and its assemblages.
动态传递矩阵可以用于计算非对称薄壁梁及其集合体的精确固有频率和模态形状。
The stiffening reasons of the rotating blade and the influence of the dynamic stiffening effect on the blade natural frequencies are discussed.
探讨了旋转叶片动力刚化效应产生的原因，并分析其对叶片固有频率的影响。
The derived dynamic transfer matrix can be used for calculation of the exact natural frequencies and mode shapes for thin-walled beams and structures approximated as composed of thin-walled beams.
动态传递矩阵可以用于计算薄壁梁集合体的精确固有频率和模态形状。
The natural frequencies, the equation of motion and the node of vibration are discussed for the vibration system of a cradle dynamic balancing machine.
本文讨论了框架式动平衡机振动系统的自然频率运动方程、振动中心等问题；
ECN rotary encoders therefore display high dynamic performance and high natural frequencies.
ECN的旋转编码器，因此显示高动态性能和高自然频率。
The First six natural frequencies of a cantilevered triangular bending plate are calculated both by the conventional finite element and by the second order finite dynamic element.
用常规有限元和二次动态有限元解算了一个悬臂三角形弯曲板的前六阶固有频率。
In the paper, by contrasting the measured static and dynamic results, it is shown that the RC floors 'damage extent could be evaluated by use of measured natural frequencies in practical engineering.
本文通过实际房屋结构中钢筋混凝土楼板的动力测试，表明在实际工程中通过对比动静载测试结果，可以用实测的自振频率对钢筋混凝土板的完好程度做出评估。
Firstly, the modal analysis of the cabinet show that some natural frequencies are in the frequency range of loads, so the dynamic and fatigue performance of the electronic cabinet must be analyzed.
由模态分析得到新旧机柜都有一些固有频率在激励载荷的频率范围之内，故对新旧机柜开展动力学分析；
The effect of the rolling tension stress on the natural frequencies of the circular saw is discussed and the criterion to evaluate its dynamic behaviour is proposed.
从理论上探讨了圆锯片受适张度应力作用时固有频率的变化规律，提出了合理的圆锯片辊压适张度评价准则。
A new method is advanced for comparing the natural frequencies by the author. Also, the structural dynamic modifications are carried out on the case.
为有效地改善该箱体的动态特性，进行了箱体局部振动固有振型的修改，提出了箱体结构修改的初步建议。
The dynamic stiffness matrix method is a powerful means of solving vibration problems in structural engineering, particularly when higher natural frequencies and better accuracies are required.
动态刚度阵法被广泛的应用于工程结构振动分析中，尤其是在需要获得更高阶频率和更高精度的振动问题时。
Dynamic response, natural frequencies and other dynamic parameter of the elastic parallel mechanism have been found out by dynamic simulation analysis...
通过动态仿真分析给出了弹性并联机构的动态响应、固有频率等动态特性参数，为并联机床整机的优化设计奠定了基础。
Dynamic response, natural frequencies and other dynamic parameter of the elastic parallel mechanism have been found out by dynamic simulation analysis...
通过动态仿真分析给出了弹性并联机构的动态响应、固有频率等动态特性参数，为并联机床整机的优化设计奠定了基础。
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