CEEMDAN方法，用于解决EMD分解过程中的模态混叠问题，同常用的EEMD方法相比，其有效减少了迭代次数，增加了重构精度，更加适合非线性信号的分析。(CEEMDAN method is used to solve the modal aliasing problem in the EMD decomposition process. Compared with the commonly used EEMD method, it effectively reduces the number of

本文运用了简单易懂的 Tcl 脚本语言，基于 HyperMesh 软件对车门模态刚度分析流 程进行了二次开发(a simple Tcl scr ipt language is used, and the modal stiffness analysis flow of car door based on HyperMesh software The process has been developed two times)

matlab有限元结构动力学分析实例，对结构动力学分析过程中的频率，特征值，模态的求解都有详细实例(Examples of finite element dynamics analysis of matlab, there are detailed examples for the frequency, eigenvalues, modal solutions in the process of structural dynamic analysis.)

HHT算法实现emd分解，及希尔伯特黄变换，实现瞬时频率瞬时幅值，边际谱的提取(Perform modal recognition, Hilbert Huang transform and its associated algorithmic program code for signal analysis and processing)