VUMAT-3D

用晶闸管建立的12脉动特高压直流输电模型(12 pulse HVDC model based on thyristor)

说明：  平面用cohesive单元模拟仿真裂纹扩展和结构失效，裂纹扩展(Plane simulation of crack growth and structure failure, crack growth with cohesive element)

说明：  FPA算法用来函数寻优，本代码给出了通用版本，能够很好的适应和学习(Flower pollination algorithm used to function optimization, this code gives a general version, can adapt and learn well)

包括GPS仿真的全套代码，matlab和C#。GPS信号的模拟、捕获、追踪，以及数据的处理，极限的解算，周跳的探测及整周模糊度的接算。有用的资料与大家共享后才能体现其价值，希望同仁们也能及时共享比较好的资料，大家一同探讨、进步。(ncludes a full set of GPS simulation code, matlab and C#. GPS signal simulation, capture, tracking, and data processing, limit solution, cycle slip detection and integer ambiguity. Only when useful information is shared with all of you can it reflect its value. We hope that colleagues can also share better information in time, and everyone will discuss and progress together.)

通过matlab编程实现了比例导引法制导的弹目飞行的轨迹生成(Trajectory Generation of Missile Guided by Proportional Guidance Method)

提供非线性自回归神经网络（NAR）的训练及前向预测代码(Training and Forward-Predictive Code of nar Neural Network)

三维比例导引法仿真，可以攻击静止/机动目标(Three dimensional proportional navigation simulation can attack stationary / maneuvering targets)

求解线接触弾流润滑中的压力与膜厚分布，包括雷诺方程、膜厚方程。变性方程、粘压方程以及密压方程的求解。(Solution of pressure and film thickness distribution in line contact lubrication)

说明：  生成三维随机纤维的matlba程序，可以直接使用(The matlba program for generating 3D random fibers can be used directly)

These composite materials generally exhibit brittle damage behavior. The anisotropy in the material and different kinds of failure mechanisms make it difficult to accurately characterize the behavior of composite materials. The present work aims to verify and apply the Puck Failure Criteria using the commercially available finite element package ANSYS by writing a user-material subroutine in FORTRAN. The model is implemented with different post failure degradation schemes EWM/CSE.