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0下载：
数值模拟轨道不平顺，可以做为轮轨激励施加到轨道和轮轨上，研究轮轨的高频振动(Numerical simulation of track irregularities, can apply for wheel-rail incentive on the rail and wheel/rail, high frequency vibration of the wheel/rail)
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子空间迭代法求解振动系统的低阶固有频率及其振型。(The subspace iteration method is used to solve the low order natural frequency and its mode of vibration of the vibration system.)
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故障振动信号的频域分析的经典工具，运用于诊断机械设备零件损伤故障。(A classic tool for frequency domain analysis of fault vibration signals)
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% 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 parabolic arch free vibration in t
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本文从环境振动的影响出发，基于Raylei曲波理论研究了层状地基土模型
的频散曲线、截止频率等特性，利用遗传算法对地基土剪切波速进行了反演，进
而得到地基土的其它动参数。(In this paper, based on the influence of environmental vibration, based on the Raylei Qu Bo theory, the layered soil model is studied.
With the characteristics o
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多自由度有阻尼系统的MATLAB求解代码，输入刚度，阻尼，平衡方程，自动计算结构阻尼频率和振型。(The MATLAB solution code of the damping system with multiple degrees of freedom is used to enter the stiffness, damping and equilibrium equations, and the damping frequency and vibration mode of the st
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小波变换分析，含有小波源程序和仿真主程序，适用于非平稳冲击振动信号的时频特性分析。(The wavelet transform analysis, which contains the small wave source program and the simulation main program, is suitable for the analysis of the time-frequency characteristic of the nonstationary shock vibra
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利用模态叠加法实现对四自由度系统的共振频率与前四阶主振型的求解(The method of modal superposition is used to solve the resonance frequency and the first four main vibration modes of the four degree of freedom system.)
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对转子的振动采集数据进行频谱分析，分析出振动的频率(The spectrum analysis of the vibration acquisition data of the rotor,Analysis of the frequency of vibration)
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介绍了对一个复杂结构—斜齿圆柱齿轮模型的创建方法，以及利用ANSYS对其进行固有频率和振型研究即模态分析的方法、步骤和过程。(This paper introduces a method for creating a complex structure - a helical gear model, and the method, procedure and process of the modal analysis of its natural frequency and mode of vi
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欢迎大家下载学习，真的是一个好程序，小波包分析提取振动信号中的特征频率。( Welcome to download the study, Really is a good program, Wavelet packet analysis to extract vibration signal characteristic frequency.)
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改进的变分模态分解算法，有效提取振动信号中故障频率。(The improved variational mode decomposition algorithm can effectively extract the fault frequency in vibration signals.)
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包含了振动信号预处理，时域处理，频域处理的大部分相关的MATLAB代码(It contains most of the relevant MATLAB codes for vibration signal preprocessing, time domain processing and frequency domain processing.)
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仿真轴承故障的振动信号，显示时域波形和频域波形。(Vibration signals of bearing faults are simulated and time domain waveforms and frequency domain waveforms are displayed.)
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传递矩阵法计算梁的横向振动频率，各种边界条件(Frequency calculate by TMM for beam vibration, free-free boundary conditions, simply supported)
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道床加速度时程曲线。功率谱密度函数 图。1/3倍频程Z振级频谱图。道床Z振级VLz（dB）。(Acceleration time history curve of ballast. Power spectral density function. Frequency spectrum of 1 / 3 octave Z vibration level. Ballast Z vibration level vlz (DB).)
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此程序可求解二阶微分方程振动的时域图和频域图，计算精准。(This program can solve the time domain and frequency domain of the second order differential equation vibration, and the calculation is accurate.)
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