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HT_identification
- hilbert时频识别（力学领域）Michael feldman编写（自由振动、强迫振动）-hilbert time-frequency identification (mechanical fields) Michael feldman prepared (free vibration, forced vibration)
prony_analysis
- 复指数法是根据结构的自由振动响应或脉冲响应函数可以表示为复指数函数和的形式，然后用线性方法来确定未知参数。其主要思想是从振动微分方程的振型叠加法原理出发，建立动力响应与模态参数之间的关系表达式，通过对脉冲响应函数进行拟合可以得到完全的模态参数，获得了良好的拟合效果。基本方法是以Z变换因子中包含待识别的频率，构造Prony多项式，使其零点等于Z变换因子的值。这样，将求解Z变换因子转化为求解Prony多项式的系数。这里给出用矩阵解Prony
机械振动程序
分别用4单元和16单元有限元法求解左端固定、右端自由的等直杆（截面积为 ，弹性模量为 ，密度为 ，杆长为 ）在1/4杆长处的稳态响应并与精确解进行对比（假设1/4杆长处集中载荷 激励）（要求MATLAB编程计算，附程序清单）
HT_identification
- hilbert时频识别（力学领域）Michael feldman编写（自由振动、强迫振动）-hilbert time-frequency identification (mechanical fields) Michael feldman prepared (free vibration, forced vibration)
prony_analysis
- 复指数法是根据结构的自由振动响应或脉冲响应函数可以表示为复指数函数和的形式，然后用线性方法来确定未知参数。其主要思想是从振动微分方程的振型叠加法原理出发，建立动力响应与模态参数之间的关系表达式，通过对脉冲响应函数进行拟合可以得到完全的模态参数，获得了良好的拟合效果。基本方法是以Z变换因子中包含待识别的频率，构造Prony多项式，使其零点等于Z变换因子的值。这样，将求解Z变换因子转化为求解Prony多项式的系数。这里给出用矩阵解Prony
NEXT
- 随机减量方法，从结构的随机振动响应中提取该结构的自由衰减振动信号-Random decrement method, the structure of the random vibration response of the structure to extract the free vibration signal attenuation
exam8_1
- 采用平面梁单元计算两铰抛物线拱的自由振动特性-Plane beam element calculation using the two hinged parabolic arch of the free vibration characteristics of
exam8_2
- 采用平面梁单元计算两铰抛物线拱的在初始条件下自由振动，并对时程曲线结果进行FFT变换-Plane beam element calculation using the two hinged parabolic arch at the initial conditions of free vibration, and the results of time-curve FFT transform
BeamStrucure
- 三节点板多边界条件自由振动和静力分析，能够自动生成模型。-Three-node shell boundary conditions free vibration and static analysis, can automatically generate the model.
exam8_001
- 本程序采用平面梁单元计算两铰抛物线拱的自由振动特性，希望对学习有限元及程序设计有帮助。-The program uses two hinged planar beam element calculation of the free vibration characteristics of the parabolic arch, the finite element and want to learn programming help.
m8_2
- 采用平面梁单元计算两铰抛物线拱的在初始条件下自由振动，并对时程曲线结果进行FFT变换-Calculation of plane beam element with two hinged parabolic arch free vibration in the initial conditions, and the results of time-curve FFT transform
ITD
- ITD法模态识别，基于自由振动曲线进行的模态识别-modal analysis
damping_ratio_response
- 自由振动响应，阻尼振动， ppt文件介绍-Free vibration response, damping vibration
NExT
- 一种适用于多自由度的自然激励技术，可以实现从随机响应信号中提取自由振动信号。-A multi-degree of freedom for the natural excitation technique, can extract from the random response signal free vibration signals.
Suspension-with-Four-Free-Dimension
- 四自由度悬架的建模及自由振动频率求法、半波输入响应、受迫振动响应、频响函数响应、自由振动响应-Modeling and four degrees of freedom suspension method for finding free vibration frequency, half-wave input response, forced vibration response, frequency response function
exam8_2
- 采用平面梁单元计算两铰抛物线拱的在初始条件下自由振动，并对时程曲线结果进行FFT变换，求得频率-Calculation of plane beam element with two hinged parabolic arch of the free vibration in the initial conditions, and the results when the FFT transform curves, obtained by
自由振动—三维弹性理论解
- 采用三维弹性理论求解圆柱壳自由振动问题。(Elastic theory for free vibration of cylindrical shells)
两铰抛物线拱的在初始条件下
- % 本程序为第八章的第二个算例，采用平面梁单元计算两铰抛物线拱的在初始条件下 % 自由振动，并对时程曲线结果进行FFT变换，求得的频率可与exam8_1.m的结果进行 % 比较，以验证本程序的可靠性(This procedure for the eighth chapter of the second examples, calculation of plane beam element with two hinged para
DampedFreeVibration
- 实现对有阻尼系统的自由振动求解，画出系统振动相应曲线(Matlab is used to solve the free vibration of damped system, and the corresponding curve of system vibration is drawn.)
Modal Analysis
- 对无阻尼多自由度振动系统的模态分析（源代码为三自由度），可通过更改质量矩阵和刚度矩阵得到自己想要的振动系统。pdf为Matlab处理震动信息的英文教程(For modal analysis of undamped multi-degree-of-freedom vibration system (source code is three degrees of freedom), the desired vibration system