drucker-prager

ABAQUS扩展子程序开发，用于计算模拟(ABAQUS extended subroutine application)

一种基于多文档得图像合并技术，是信号处理的基础，PLS部分最小二乘工具箱。( Based on multi-document image obtained combining technique, Is the basis of the signal processing, PLS PLS toolbox.)

abaqus有限元软件umat（damage）(abaqus finite element software umat (damage))

说明：  克里金方法（Kriging）, 是以南非矿业工程师D.G.Krige (克里金)名字命名的一项实用空间估计技术，是地质统计学 的重要组成部分，也是地质统计学的核心。 (Kriging method (Kriging), is a South African mining engineer DGKrige (Kerry King), named after a practical space estimation techniques, is an important part of geostatistics is the core of geostatistics.)

这是地球物理学中声波波动方程正演程序，非常有用(this is a program about finite difference)

管型燃烧固体火箭发动机压强建立过程计算程序 输入为比热比，燃气气体常数，点火温度，推进剂密度，装药直径（内径和外径），喷管喉部直径，装药体积，燃速相关常数 输出为压强和工作时间(tube type of solid rocket motor combustion pressure build process calculation programs for heat input than, gas gas constant, the ignition temperature, propellant density, charging diameter (inside and outside), nozzle throat diameter, charging volume, burning rate pressure and related constant output to work time )

用蒙特卡洛模拟的方法计算美式期权的价格以及基本描述,实现了图像的加水印，去噪，加噪声等功能，包括最小二乘法、SVM、神经网络、1_k近邻法。( Monte Carlo simulation method of calculating the American option price and basic description, Realize image watermarking, de-noising, plus noise and other functions, Including the least squares method, the SVM, neural networks, 1 _k neighbor method.)

说明：  可以进行平面拟合，基于matlab语言，简单易懂(It can be used for plane fitting. It is simple and easy to understand based on MATLAB language.)

对机械中的振动信号进行傅立叶变换，作出频谱图进行分析。(Fourier transform of the vibration signal)

umat subroutin for 2d ladovez damage model i ncomposite materials