FDTD 远场计算

一个用于模拟声波在非线性介质中传播的matlab工具箱，可以用来进行超声相关的实验。(Realization of ultrasonic simulation)

说明：  基于ANSYS分析平台的铰接薄壳的后屈曲分析--APDL(Post-buckling analysis of articulated thin shells based on ANSYS analysis platform--APDL)

说明：  matlab对sar_adc相关数据的建模(Matlab for SAR_ Modeling of ADC related data)

说明：  关于3维应力应变的金属本构方程子程序代码显式vumat(On the Subprogram Code of 3-D Stress-Strain Constitutive Equation of Metals Explicit VUMA)

说明：  质心定位算法实现精度要求低的简单定位，加权质心定位比质心定位定位精度更高一些。(Centroid localization algorithm achieves simple positioning with low accuracy requirement, and weighted centroid localization is more accurate than centroid localization.)

说明：  利用TOA与最小二乘法直接求解（具有独立创新性），TDOA是利用拉格朗日法求解，而且里面的定位图解做得特别好，分别有一点定位，多点定位的的三维视觉图。(TOA is directly solved by least squares method(Innovativeness),TDOA is solved by Lagrange's method.)

abaqus 使用技巧-Inp文件中单元类型改变时，一定要注意，划分网格的时候是否，选用了一种望各类型，比如4变形和3变形的区别，如果用注意将所有的单元类型都做相应的修改。这说明单元类型由2个因素决定，1网格形状，2计算任务.(Abaqus tips-When changing the unit type in the Inp file, be sure to pay attention to whether or not to select a type, such as 4 deformation and 3 deformation, if you use the attention, all the unit types should be modified accordingly. This shows that the unit type is determined by two factors, 1 grid shape, 2 calculation tasks.)

说明：  通过EDEM体积力耦合API源程序，实现流体曳力耦合(Through the edem volume force coupling API source code, the fluid drag coupling is realized)

通过频谱来模拟波浪，程序为Jonswap谱的波浪模拟，可随意调整谱参数、时间间隔和模拟的时间长度(The wave is simulated by the spectrum, and the program is a wave simulation of the Jonswap spectrum. The spectral parameters, time interval and length of the simulation can be adjusted at will.)

说明：  基于遗传算法的N×N阵列可重构天线的建模仿真脚本(genetic algorithm is applied to M N reconfigurable antenna array)