celiangzukang

之前找不到合适精度的log2x函数的定点化源码，经过实现并验证后，发上来大家一起学习(fixed version for log2x)

用ANSYS对梁进行优化设计，分为优化分析文件，优化控制文件，求解方法几个方面。(Using ANSYS to optimize the design of the beam, divided into optimization analysis files, optimize the control file, the method for solving aspects.)

基于ABAQUS的hashin和Tong-Norrius准则的umat子程序(Umat subroutine based on the Hashin and Tong-Norrius guidelines of ABAQUS)

本程序针对内弹道的计算实现火炮内弹道计算(The procedure for the calculation of the interior ballistics Gun Interior Ballistic calculation)

对于PID算法给予了通俗易懂的讲解，有利于初学者快速掌握PID的要领(I give the PID algorithm the understandable explanation，which will help beginners to quickly master the PID essentials)

abaqus三维8节点实体单元Fortran子程序，里面有详细的注释，有单元开发兴趣的同学可以下载学习(The fortran subroutine of the 8 node solid element of ABAQUS, with detailed comments in the unit development interest students can download learning)

这里包含了有限元法的一本书籍，和有限元法的C++代码。希望对各位有所帮助(This contains a finite element method books, and the finite element method of C++ code. I hope to help you)

格子玻尔兹曼 圆柱绕流 Python编写(lattice boltzmann flow around a cylinder, using Python. very fast because of numpy library)

fluent软件的UDF程序，是焊接过程的热源，热源类型为双椭球空间热源。(fluent udf heat source)

求解非线性不动点方程组x=G(x)的非线性塞德尔迭代方法，初值x0(For solving nonlinear fixed point equation x = G (x) the nonlinear Seidel iterative method, initial value x0)