系统地阐述了基于有限元和MATLAB软件的结构动力学计算和它在工程数值仿真中的应用，包括有限元的基本方法和步骤、结构的动力特性和响应分析、单元的质量矩阵和刚度矩阵的建立及典型结构的动力学分析、工程应用和数值仿真等内容。(The structural dynamics calculation based on finite element and MATLAB software and its application in engineering numerical simulation are described systematically, including the basic methods and steps of the finite element, the dynamic characteristics and response analysis of the structure, the establishment of the mass matrix and stiffness matrix of the element, the dynamic analysis of the typical structure, the engineering application and the numerical value. Simulation and other contents)