ABAQUS-UMAT

Code for Classification of points

nsolgm 算法 是求解非线性方程组的一种非常有效而且又快捷的方法(nsolgm algorithm for solving nonlinear equations is a very effective and efficient way and)

常用的matlab代码，非线性方程组求解，基本可以满足大学和研究生常用代码(Common Mathematical Codes)

适用于ABAQUS的自定义材料子程序，适用于显式分析的J2等向强化模型。(ABAQUS apply to the self-defined material subroutine suitable for explicit analysis J2 model to strengthen.)

说明：  从别的网上下来的，是一个简单又经典的分子动力学模拟程序，很适合初级使用。(for molecular simulation)

地球固连坐标系与地球惯性坐标系的转换矩阵程序，考虑的章动、岁差、自转等。(Earth' s solid even coordinate system with the Earth inertial coordinate system transformation matrix program, consider the nutation, precession, rotation, etc..)

采用数值模拟方法对风一车一桥耦合系统的车桥气动特性进行分析研究，模拟计算了不同工况下车 辆、桥梁的气动力系数．分析了车桥问相互的气动影响，研究结果表明．车桥耦合系统与桥梁和车辆各自单体 相比较．气动力系数差异较大．故建议进行风一车一桥系统耦合振动分析时。车桥气动力系数应考虑车桥问 的气动影响．(The numerical simulation method axle aerodynamic characteristics of the the wind car bridge coupling system analysis, simulation under different conditions of vehicles, bridges aerodynamic coefficients. Analysis of the influence of the mutual pneumatic axle Q, the study results show that. The axle coupling system with the respective bridges and vehicles monomer comparison. Aerodynamic coefficients quite different. It is suggested that wind car bridge system coupled vibration analysis. Axle aerodynamic coefficients should consider impact of axle ask pneumatic.)

一维欧拉方程计算，集合了Lax-Friedrichs，Richtmyer，MacCormack，Steger-Warming，Van Leer，AUSM，Zha-Bilgen，Godunov，Osher，Roe，Rusanov，HLL(HLLE)，HLLL，AUFS方法(One dimensional Euler equation, including Lax-Friedrichs, Richtmyer, MacCormack, Steger-Warming, Van Leer, AUSM, Zha-Bilgen, Godunov, Osher, Ro, Rusanov, HLL(HLLE), HLLL, AUFS)

基于全相位谱分析的相位差频谱校正法，结合了全相位FFT与传统FFT谱分析法。(Phase Difference Correcting Spectrum Method)

岩石损伤与断裂力学一直是有限元的弱势领域，必须依赖MATLAB一类的数学软件协助，本书籍提供了基础教程与相关案例。(Rock damage and fracture mechanics have been the weak field of finite element, must rely on MATLAB class of mathematical software to help, this book provides basic tutorials and related cases.)