This paper makes use of free vibration method, using the same model and measuring device to identify the flutter derivatives of the girder.
本文对主梁的颤振导数识别，采用与主梁颤振分析试验相同的节段模型和测量装置，以自由振动法进行试验。
Free vibration method is employed to measure the damping ratio. A great deal of fundamental data for the damping ratio of rubber powder concrete in small deformation is obtained.
采用自由振动法测试得到了一批橡胶混凝土小变形阻尼比的基础性数据。
According to the elastic thin plate theory and vibration theory, a boundary element method (BEM) was used to analyze the frequency characteristics of a thin plate in lateral free vibration.
根据弹性薄板理论和振动理论，运用边界元法(BEM)分析了薄板弯曲自由振动的频率特性。
In this article, a calculation method is put forward for free vibration frequency of a pipe which contains flow fluid.
本文提出了对包含有流动流体的管道自由振动频率的一个计算方法。
In this paper, a general analytical method — space variable transform method is presented for solving free vibration problems of thick cylindrical shell with arbitrary boundary conditions.
本文提出一种一般解析方法——空间变量变换法，用以求解任意边界条件下圆柱厚壳自由振动问题。
The essay analyses free vibration problem of laying bed build-up board of antisymmetry angle with spline finite element method.
本文用样条有限元法，分析了反对称角铺设层合板的自由振动问题。
A new method of estimating characteristic parameters for continuous spectrum of response signal of damped free vibration is presented in this paper.
针对自由衰减振动信号的连续谱，提出了一种估计特征参数的方法。
This paper presents a free vibration study of moderately thick super-elliptical plates with various boundary constraints using the differential cubature method.
本文用一种新型的数值方法枣微分容积法求解任意边界条件下超椭圆形中厚板的自由振动问题。
Firstly, the expressions of free vibration of moderately thick plates in polar coordinates are derived and the general solutions are obtained by the means of method of separation of variables.
首先，导出了用极坐标系描述的中厚板自由振动板的微分方程，用分离变量法求得其一般解。
The equation of free vibration frequency of this system has been derived by Averaging Method of W. Ritz and a numerical example is given.
用里兹平均法导出了系统的自由振动频率方程，并举出一计算实例。
Based on the analytical and numerical method, free vibration of the cantilever beam with rotating motion is analyzed.
分析转动悬臂梁的自由振动问题，通过综合运用解析法和数值方法解决悬臂梁振型函数过于复杂的问题。
A simple and convenient method is presented, which can deal with free vibration of thin plates with internal supports or concentrated masses.
提出边界元法分析域内具有支承和集中质量的薄板自由振动问题的简便方法。
Structural free vibration characterization and seismic response were calculated by means of beam-plate linear mathematical model of finite element method.
采用梁、板线性有限元数学模型计算了结构自振特性和地震响应。
The 3d exact equations to solve free vibration of the cylindrical shell were obtained by using power series expansion method.
用幂级数展开法得到了求解该圆柱形梯度壳自由振动的三维精确公式。
The paper presents a method combined test with theory for free vibration of wheel with outer taper shell.
对外缘带锥壳的轮盘固有振动问题提出了一种试验与理论计算相结合的方法。
The dynamic stiffness method is exact for structural free vibration analysis.
在结构自由振动分析中，动力刚度法是一种精确算法。
Then, the free vibration and the forced vibration of the rotor are obtained by means of Runge-Kutta method.
然后，采用Runge - Kutta方法求解了多种参数下的自由振动和强迫振动。
By considering the geometrical nonlinearity, a new method for the nonlinear random vibration of a free spanning submarine pipeline is presented.
考虑海底悬跨管道的几何非线性特征，建立了悬跨管道非线性随机振动响应分析方法。
Equivalent stiffness method proposed by the authors is used to calculate free-vibration of thin high bridge piers, then the result of calculation is analyzed and compared with that of FEA method.
推导出薄壁高桥墩自振频率的计算公式，并将该公式计算结果与有限单元法计算值进行了分析与比较。
Using the dynamic Finite Element Method, the dynamic soil pressure distribution along the pipe periphery and the free vibration characteristics of the pipe are studied in this paper.
本文通过动力有限单元法对管周围土压力的动力作用分布和管子的自振特性进行了某些探讨。
According to different driving ways of vibration, the sectional model test methods can be classified into two major categories, i. e. free-vibration method and forced-vibration method.
按照振动驱动机制不同，节段模型试验方法可分为自由振动法和强迫振动法两大类。
An optimum method is studied for choosing the blade spacing for vibration-free face-milling cutters in this paper.
研究出减振端铣刀齿间角的一种优化方法。
If there exists a discontinuity in the meridian for a rotational shell, we use the modal synthesis method to analyse the free vibration of this kind of shell.
当壳体的经线有折角时，我们采用模态综合法分析它的固有振动特性。
In this paper, the alternate iteration method is used in static analysis of cable truss hybrid structural system, and the simplified non damping free vibration equations have been drawn.
本文采用交替迭代法分析索-桁结构体系，并导出了这种杂交结构无阻尼自由振动的简化方程，通过算例分析得出了一些对实际工程有益的结论。
Structural properties of free vibration are computed by the directly filtering frequency method.
用直接滤频法计算结构的自振特性；
Therefore the nonlinear lateral free vibration of drill stem is investigated by the perturbation method.
分析公式表明，钻柱横向线性振动仅是钻柱横向非线性振动的一种特殊情况；
In this paper the cord element method is used to study the sensitivity of the free vibration property and dynamic response of the free hanging systems.
应用弦单元计算了自由悬挂系统的自振特性，进行了敏感性分析，并研究了动力响应。
The free vibration character of a shallow draft ship is successfully calculated. The results show that the theory and method described in this paper are of important practical value.
计算了一条货船的自振特性，从而表明了本文中的理论和方法具有重要实用价值。
The free vibration character of a shallow draft ship is successfully calculated. The results show that the theory and method described in this paper are of important practical value.
计算了一条货船的自振特性，从而表明了本文中的理论和方法具有重要实用价值。
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