强迫振动

多自由度不对称分段线性系统强迫振动的Fourier级数解法

Fourier Series Solution of Forced Vibration of a Multi-Degree-of-Freedom System with Piecewise-Linear Elastic Elements

利用强迫振动扭摆方法对ZnAl二元合金熔化过程的低频内耗进行了研究。

The low-frequency internal friction in Zn-Al binary alloy during the melting process is measured via forced vibration torsional pendulum .

引入用实验得到的柔度矩阵，建立强迫振动状态方程及确定系统的M，K、C。

A state equation for forced vibration system is established by introducing experimental compliance matrix , and then M , K , C are determined .

利用广义函数的Fourier展开，讨论了此类梁在不同形式载荷作用下的强迫振动响应。

Forced vibration responses of such beams under action of different type loads are discussed with Fourier expansion of generalized functions .

Duffing振子强迫振动的混沌特性仿真分析

Simulation analysis of chaotic dynamic property in forced vibration of Duffing vibrator

假设阻尼为Rayleigh型比例阻尼，对方程进行无量纲化处理，然后对无量纲方程进行解耦，求出其强迫振动时候的位移响应。

By the assumption of Rayleigh type ratio damping , taking dimensionless parameter and decoupling transform , the displacement-time response of the forced vibration system is solved .

在多功能内耗仪上用自由衰减和强迫振动方法研究了Al含量对退火态FeAl合金Zener弛豫的作用。

The effect of Al content on the Zener relaxation peak in annealed Fe-Al alloys has been investigated using a computer-controlled automatic inverted torsion pendulum through free-decay and forced vibration method .

××型号1.2m风洞自由翻滚/强迫振动装置研究

Investigation of free-tumble / forced vibration device of the ×× project in 1.2m × 1.2m wind tunnel

通过打靶法得到了周边简支FGM圆薄板强迫振动的数值结果。

Numerical results of thin FGM circular plates with simply-supported boundary and subjected to surface periodic thermal loads are obtained by using shooting method .

作为例子，给出了这套系统测得的Si谐振梁的非线性强迫振动（硬弹簧特性）在谐振点附近的从低频向高频扫描的幅频和相频曲线。

The amplitude and phase response curvature of the nonlinear forced vibration of a Si beam near resonant point as an example are given . In this example , the system sweeps from low frequency to high frequency .

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.分析结果表明：变质量转子的自田振动是由转子质量大小变化引起的；

Then , the free vibration and the forced vibration of the rotor are obtained by means of Runge-Kutta method .

最后，还进行了用高阻尼弹簧对受简谐荷载强迫振动梁做动力吸振的实验研究，结果表明，用高阻尼弹簧做TMD具有良好的减振效果。

The experiment is conducted on a steel beam with TMD including high damping springs and the results indicate the good performance of such a structure for vibration reduction .

然后利用Fourier级数展开与谐波平衡法研究基础激励下非线性碟簧系统的强迫振动，通过详细的参数研究考察非线性碟簧元件的减振性能特征；

The steady forced vibration of the nonlinear disk spring system under base excitation is obtained by using the Fourier series analysis and harmonic balance method . The vibration reduction performance of disk spring is analyzed through detailed parametric investigation .

分析包括结构固有特性（结构干、湿模态）和水流激励作用下的强迫振动特性。第三，通过FSI计算，对结构强度进行了校核。

Both inherent characteristics ( dry and wet modals ) and fluid-induced vibration are analyzed . Thirdly , the structure strength is checked through the FSI analysis .

应用三自由度强迫振动装置，解决了大攻角下弹性悬挂自由振动时存在的竖向运动失真问题，准确识别了大攻角下的H型和矩形断面杆件气动导数。

The forced vibration equipment with three degrees of freedom is applied to solve the distortion problem of vertical motion in free elastic suspension method , and the flutter derivatives of H-shaped and rectangular sections under large attack angle are accurately identified from the forced vibration testing data .

通过假设强迫振动的组合谐响应模式，采用Kantorovich时间平均法，把非线性偏微分方程化成了非线性常微分方程组。

Assuming that the vibration is harmonic and using Kantorovich time averaging method , the partial differential equations are converted into a system of nonlinear ordinary differential equations .

提出一种描述多支承转子系统弯曲振动的数学模型：应用二分法和LU分解法综合计算弯曲自由振动模态，应用Newmark时间差分法和空间五点差分法综合求解弯曲强迫振动动力响应；

The bending vibration equations are established on the multi-supports rotor model system . For calculating mode of free vibration , the dichotomy and LU law are adopted , while the Newmark law and quincunx difference are applied to dynamical response calculations .

其次介绍了高阶系统中周期过程（自振与强迫振动）的分析与控制，再次介绍了与奇怪吸引子相关的Hausdorff维数与Lyapunov指数的估计和与混沌相关的研究，最后给出了一个结论。

Secondly , the stability and control of periodic oscillations ( the auto-oscillations and the forced oscillations ) of high order systems are investigated . Finally , some researches on estimates of the Hausdorff dimension and the Lyapunov exponent of strange attractors are introduced .

本文利用Voigt力学模型对粘弹性简支梁进行动力分析，得到了梁的自由振动与强迫振动的若干解析解的表达式.并与S。

The dynamic analysis of viscoelastic simple supported beam has been made in accordance with the relationship between stress and strain expressed by the Voigt mechanical model as well as several analysis expressions have been obtained .

应用强迫振动装置上的天平测量节段模型的气动力时程曲线，实现了随攻角连续变化三分力系数的测量，并由升力时程曲线推算了多组H型和矩形断面的Strouhal数。

The aerodynamic forces of section model are measured by the force balance of forced vibration equipment , which is further used to estimate the Strouhal number of H-shaped and rectangular sections , and the measurements of steady aerodynamic force coefficient continuously varying with attack angles are realized .

大跨桥梁颤振自激力的强迫振动法研究

A new method for measuring flutter self-excited forces of long-span bridges

正交各向异性矩形中厚板的强迫振动及其应用

Forced Vibrations of Rectangular Mid Thick Orthotropic Plate and Its Application

中心有刚体质量的环形薄板的非线性强迫振动

Nonlinear Forced Vibration of Annular Plates With a Concentric Rigid Mass

强迫振动法提取桥梁气动导数研究

Identification of aerodynamic derivatives for bridge sections by forced oscillation method

可视化分析非线性强迫振动的混沌现象

Visualization-Based Analysis of Dynamic Property of Chaos in Nonlinear Forced Vibration

保守系统强非线性强迫振动问题的一种解法

A Method for Solving Strongly Nonlinear Forced Oscillation in Conservative System

变厚度圆板的非线性强迫振动

On the nonlinear forced vibration of circular plates with varying thicknesses

弹性扁壳由移动质量引起的强迫振动

Forced Vibrations of Elastic Shallow Shell Due to the Moving Mass

渐近线性波方程强迫振动的一个注记

A Note of Forced Vibrations for an Asymptotically Linear Wave Equation

强迫振动法大跨度桥梁节段模型气动导数辨识

Identification of Flutter Derivatives of Long-Span Bridge Section-Model from Forced Vibration Datas