The influential factors of complex boundary condition on free-vibration characteristics of real bridge structures are analysed.
针对实际桥梁结构复杂的边界条件，分析其对结构固有振动特性的影响因素。
This paper gives an exact solution for free vibration of a physically nonuniform straight bar with varying section by the use of a class of integrable linear ordinary differential equation.
本文应用可积的一类线性微分方程求出了非均质变截面弹性直杆振动问题的一个精确解，我们应用这一精确解验证了渐近解的精确度。
This paper gives a new analytical solution of the free vibration of an arbitrary-shaped plate with complex boundary conditions.
本文给出了复杂边界条件下任意形状板的自由振动分析的一个新的解析解法。
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。
The uniformly valid solutions for free vibration of revolution shells can be worked out through these answers.
通过此解答可以解决旋转薄壳自由振动一致有效解的求解问题。
Therefore, the differential equations 'coefficient matrix of the free vibration of the spatial rigid body is automatically formed, and free vibration frequency and its type can also be found out.
最后自动组成空间刚体自由振动微分方程的系数阵，并计算出刚体的自振频率和振型。
The boundary conditions has strong influence on the coupling effect, the stronger it is, the smaller frequency of free vibration is but the larger amplitude is.
边界条件对耦合效应有较大的影响，较强的边界条件使椭圆板热弹耦合自由振动的频率变低，但振荡幅度增大。
This paper calculate inherent frequency of the free vibration of the cylinder shell with the theory of the separated variable method on the basis of displacement model.
以位移模型为基础，用有限元中的分离变量法的理论，求解了圆柱壳自由振动的固有频率，计算结果与壳体解析解相一致。
The finite element model of the free vibration for the rigid suspension catenary and pantograph is set up.
建立刚性悬挂接触网的自由振动有限元模型，计算其固有频率和振型。
A kind of free vibration equation of the nonlinear dynamical system is solved to study chaotic movement.
为了讨论混沌运动，对一类非线性动力系统的自由振动方程进行了求解。
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。
Any system capable of a free vibration without external force is a counter example, e. g. a wire in the piano.
任何一个无外力而能自由振动的系统就是一个反例，譬如钢琴中的一条钢丝。
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。
Processing the response signals by using the random decrement technique, a unique corresponding to each mode is obtained, which represents a free vibration response of the structure.
应用随机减量技术对响应信息进行处理，相应于结构的每一振型可得到一条独特的随机衰减曲线，该曲线代表结构自由振动响应。
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。
An approach using singular functions is propsed to solve the bending deformation and the transverse free vibration problems of beams in consideration of shearing.
提出一种考虑剪切变形影响时，求解梁的弯曲变形和横向自由振动的奇异函数解法。
Brief reviews about elastic stability, free vibration, transient dynamic response and harmonic dynamic response of circular cylindrical shells are given first.
本文首先对圆柱壳的稳定性、自由振动、瞬态和稳态动力响应研究进行了简要回顾和评述。
The precise solution of free vibration equation of flat conical shall is presented.
对于扁锥壳的非线性动力自由振动方程，给出了准确解。
Then the eigenvalue problem of free vibration of annular sector plates is transformed into the eigenvalue problem of integral equation by using superposition theorem.
然后由叠加原理将环扇形板的自由振动问题转化为积分方程特征值问题；
The analysis of free vibration of hydropower house by means of two methods are deformation of inclination Angle and slope deflection.
本文首先叙述用两种方法(倾角变位法和角变位移法)分析水电站厂房的自振特性。
The spline function is used in the analysis of free vibration problem of plates on elastic foundation.
本文提出一种用样条函数分析弹性地基板自由振动的新方法。
Finally, the cases of free vibration, impulsive response and moving load are also discussed.
最后对自由振动，脉冲激励和运动载荷情况分别进行了讨论。
There exists transition point in the free vibration of revolution shells at some special frequencies.
旋转薄壳的自由振动在特定频段存在转点现象。
The accurate double Fourier series analytical solutions are obtained for the free vibration, buckling and bending of Point Supported Anisotropic Skew Plates with four free edges.
一个精确的重富立叶级数解析解用于分析四边形自由的点支横观各向异性平行四边形板的自由振动、屈曲和弯曲。
The damping characteristics of the bedrock in a nuclear power station are studied experimentally by free vibration system with one degree of freedom.
本文采用“自由振动法”，设计了一个等效单自由度振动体系，对某核电站基岩的阻尼特性进行了实验研究。
The dissertation is devoted to studying the nonlinear free vibration of elastic circular plate and circular sandwich plate.
本论文致力于研究弹性圆板和夹层圆板的非线性自由振动。
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。
Based on the basic equations of free vibration of thin plate, the Hamilton canonical equations were obtained.
根据弹性薄板自由振动问题的基本方程，把问题引入到哈密顿对偶体系中。
Of course, it can be used for the free vibration analysis of the other frame structures.
显然，该方法还适用于其他刚架结构的自由振动分析。
In the previous research on torsional. vibration of diesel engine shafting system, an equivalent system must be defined before calculating free vibration and forced vibration.
对柴油机轴系扭振的研究，以往是先建立扭振当量系统，然后进行自由振动与强制振动计算。
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