Program33_waveguide

一个drucker prager模型的 的用户子程序，用于求解平面应变问题 abaqus UMAT and inp(drucker prager yield model for abaqus )

Amplitude of Explosion.In contrast to the design of sparks number, the am-plitude of a good firework explosion is smaller than that of a bad one. Amplitudeof explosion for each firework is defined as follows

三维后台阶流动再附着过程的K-E湍流计算程序，采用SIMPLE算法+壁面函数(Calculation procedures of K-E turbulent flow for three-dimensional backward-facing step flow reattachment process, using SIMPLE algorithm+ wall function)

对平面上给定的多点进行多项式曲线的拟合，可设置拟合多项式的次数(Given more points on the plane polynomial curve fitting, you can set the number of polynomial fitting)

ar谱估计，分别用了最小二乘法和yulewalker法。(ar spectrum estimation, least squares method were used and yulewalker law.)

实现求取雅克比矩阵的程序，对于学习数值分析的同学会很有用(Realize the procedures for Jacques than matrix )

线宽计算，用matlab计算线宽。可以得到的值来分析和使用半导体激光器线宽的联系(linewidth calculator)

ansys-初应力-残余应力-焊接残余应力-ansys温度场(ansys-initial stress)

对数据进得自回归分析预测。并生成下一周期的预测值(Of data into the prediction derived from the regression analysis. And generate the next cycle of prediction value)

umat subroutin for 2d ladovez damage model i ncomposite materials