Strain_Space

在fortran环境下编写ductile_fracture子程序，可以通过MARC来调用，实现板材成形中破裂过程的可视化(Written in fortran environment ductile_fracture subroutines can be invoked by MARC, realized in sheet metal forming rupture process visualization)

PSCAD仿真环境下，单相PCS的VF模式(PSCAD simulation environment, the single-phase PCS VF mode)

基于pscad利用PWM调制方法实现的逆变并网的仿真模型(Simulation Model of Inverter Grid Based on pscad Using PWM Modulation Method)

2维4节点的UEL单元，嵌入UMAT，采用j2 mises屈服准则(2d4nodes uel elements, with umat codes, and j2 mises flow rule)

二维泊松方程的定解问题：用5点菱形异步迭代格式求解泊松方程，h=5/4 ,误差s=1e-6 (Differential method for Poisson equation)

abaqus蠕变子程序,user中的实例(creep subroutine for abaqus user)

河口、海洋高低潮位调和分析与预报程序，根据方国洪的书编制。(Estuaries, marine high and low tide harmonic analysis and prediction program)

说明：  Umat Abaqus for plasticity

本程序利用五阶WENO格式结合Lax-Friedrichs矢通量分裂法求解二维Euler 方程(u_t = RHS = -f(u)_x - g(u)_y)的空间项，应用三阶TVD Runge-Kutta法 求解其时间项来模拟Riemann间断问题.(The program uses five order WENO scheme combined with Lax-Friedrichs vector flux splitting method to solve two-dimensional Euler. Equation (u_t = RHS = -f (U) _x g (U) _y) space terms, the three order TVD Runge-Kutta method is applied. The time term is solved to simulate the Riemann discontinuity problem.)

说明：  calculate wear the subroutine coded by Fortran and can be used for the 2D model and useful for the wear calculation