数值计算-牛顿-拉弗森

说明：  Anderson计算流体力学第十章平板超声速流动例子源码(Anderson Chapter 10 supersonic flow example source code)

A finite element fortran code for 2-D truss

2.5维的柱坐标系的正演程序，fortran的语言，供大家参考(Forward procedure 2.5 dimensional cylindrical coordinate system, FORTRAN language, for your reference)

ansys非线性各向同性，非线性随动硬化(ANSYS nonlinear isotropic, linear kinematic hardening)

使用四阶Runge-Kutta算法解决两个一阶微分方程组，并输出到文件。(solve a two cupled first order differential equations)

说明：  编写UMAT子程序的介绍，以及黄永刚晶体塑性子程序的帮助文档(Introduction to the preparation of UMAT subroutines, as well as huang yonggang crystal plasticity documentation)

利用模态叠加法计算结构动力响应,通过结构的的刚度矩阵，阻尼矩阵以及质量矩阵进行进行求解。(The use of mode superposition method to calculate structural dynamic response, through the structure of the stiffness matrix, damping matrix and mass matrix to solve it.)

非结构网格，有限体积法解二维浅水方程， 用于水动力学计算，带算例。(solving the 2D depth averaged navier-stokes equations using finite volume method)

说明：  本源代码来自ABAQUS在隧道及地下工程中的应用一书，供大家学习使用。(This source code comes from the application of ABAQUS in tunnel and underground engineering for everyone to learn and use.)

解释有限元程序SAP5的原理，结构，算例的一本书籍(The finite element program SAP5 explain the principles, structure, examples)