VUMAT_UMAT-interface

Abaqus UMAT code 适用于平面应变，轴对称弹塑性本构关系，也适用于大应变情况，使用显示积分算法。(Abaqus UMAT code applies to plane strain, axisymmetric elastoplastic constitutive relation, also applicable to large strain, using the integration algorithm.)

说明：  二维笛卡尔坐标系下网格的划分，包括多重网格等。(Two-dimensional Cartesian coordinate system, the division of the grid, including the multi-grid and so on.)

说明：  积分公式(用锲比雪夫多项式构造积分点公式)(integral formula(using the Cheb. polynomial integral point) )

是一种测向交叉定位算法 通过大量阅读论文获得，可以参考。有兴趣，可以一块讨论(Algorithm for DOA Location)

fortran编写的读取dxf程序，可读取圆，多线段，直线，点，块参照，文字的坐标高程信息(write by fortran ，it can read dxf program， can read a round, multi line, linear, point, block reference, the coordinates of elevation information text)

二维热传导扩散方程的高斯-赛德尔迭代方法。(A two-dimensional thermal diffusion problem using Gauss-Seidel iteration method.)

TGM.m \传统的Galerkin方法 MD.m \时滞惯性流形方法 brownian.m \演示布朗运动 randomwalk.m \ 演示随机游走 tumor.m \ 演示tumor演化(TGM.m traditional Galerkin method MD.m Delays inertial manifold method brownian.m demo Brownian motion randomwalk.m demo random walk tumor.m demo tumor evolution)

说明：  可用于层次分析法比较评价，主函数输入初始矩阵，调用层次分析函数(It can be used for comparative evaluation of analytic hierarchy process. The main function input the initial matrix and call the analytic hierarchy process function.)

线弹性模型，可以对一般的弹性体通过abaqus进行验证使用(Linear elastic model)

基于有限体积法的naca0012翼型的无粘绕流计算(Calculation of airfoils based on the finite volume method naca0012 inviscid flow around)