ABAQUS_VUMAT初学者用户子程序小例子

说明：  张拉膜结构非线性有限元法找形程序，采用ANSYS APDL语言编制，附带详细注释(Non-linear Finite Element Method (FEM) finding program for tensioned membrane structures, wrote by ANSYS APDL with detailed comments.)

说明：  利用ansys建立输电塔模型，并进行模态分析。(The transmission tower model is established by ANSYS, and the modal analysis is carried out.)

精细积分法Matlab程序，利用该程序对动力系统的微分方程精细求解。(The program of precise integration method MATLAB is used to solve the differential equation of dynamic system precisely.)

diff 2 for stationary data

说明：  程序考虑了悬臂梁的几个大变形，并给出了变形过程图，很适合非线性学习的初学者。(The program considers several large deformations of the cantilever beam, and gives the deformation process chart, which is very suitable for beginners of nonlinear learning.)

说明：  用于求解悬臂梁前3阶固有频率和振型（假设模态法，解析法，瑞利里兹法）(It is used to solve the first three natural frequencies and modes of cantilever beam (assumed mode method, analytical method, Rayleigh Ritz method))

采用初始应力法进行被动土压力分析，程序中对相关矩阵及每一步的意义进行了简要说明(The code uses the initial stress method to analyze the passive earth pressure. The relevant matrix and the significance of each step are briefly explained in the program.)

说明：  此程序为本人自行编制的矩形移动荷载作用下饱和土地基的动应力响应问题的MATLAB程序，适合相关研究方向的初学者。(This program is a matlab program for the dynamic stress response of saturated soil foundation under the action of rectangular moving load, which is suitable for beginners in related research fields.)

说明：  abaqus的动态力学数值模拟源文件，适合abaqus新手操作练习使用(ABAQUS source files for numerical simulation of plate constraints, suitable for ABAQUS novice operation exercises)

说明：  3维米塞斯屈服准则模型，子程序为vumat，用于abaqus(ABAQUS 3-dimensional Mises yield criterion)