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UMMDp180718
说明： 新的屈服准则ABAQUS子程序UMAT，含有多种较新的准侧，能很好运用(The new yield criterion ABAQUS subroutine UMAT contains a variety of newer standards and can be used very well.)
- 2021-03-22 21:19:16下载
- 积分：1
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DE优化函数程序
大坝变形的精确预测对其安全评价方面发挥着重要作用。为了进一步提高大坝变形预测精度，提出了一种改进的灰狼算法优化支持向量机的预测模型。通过引入非线性收敛因子和采用动态加权策略，提升灰狼算法优化支持向量机惩罚因子和核函数参数的能力，并以优化的参数来建立支持向量机大坝变形预测模型。选取实例数据，在与布谷鸟算法、差分进化算法、粒子群算法、基本灰狼算法优化的支持向量机预测比较中，实验结果表明，改进的灰狼算法对支持向量机参数的优化是有效的，可以提高大坝变形预测精度。(Accurate prediction of dam deformation plays an important role in its safety evaluation. In order to further improve the prediction accuracy of dam deformation, an improved grey Wolf algorithm is proposed to optimize the prediction model of support vector machine. By introducing the nonlinear convergence factor and using the dynamic weighting strategy, the gray wolf algorithm is improved to optimize the capacity of the support vector machine penalty factor and the kernel parameter, and the support vector machine dam deformation prediction model is established with the optimized parameters. The experimental results show that the Improved Grey Wolf algorithm is effective for the optimization of support vector machine parameters, and it can improve the accuracy of the deformation prediction of the dam.)
- 2018-06-28 09:53:07下载
- 积分：1
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求解一维LAVAL管亚音速流动
说明： 用MACCORMACK方法求解一维LAVAL管亚音速流动(solve one dimensional laval tube with the method in maccormack)
- 2020-05-28 10:47:49下载
- 积分：1
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vector
说明： 电机矢量控制仿真（svpwm方法）实测有效 包括坐标变换(vector control The simulation of motor vector control (SVPWM) includes coordinate transformation)
- 2021-02-08 20:09:38下载
- 积分：1
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GRNN网络的预测基于广义回归神经网络的货运量预测
说明： GRNN网络的预测——基于广义回归神经网络的货运量预测(Prediction of GRNN Network-- Freight Volume Forecast based on Generalized regression Neural Network)
- 2021-04-13 14:58:56下载
- 积分：1
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source term
说明： fluent，使用UDF定义凝固模型中的源项，实现自热发热源(Fluent, using UDF to define the source term in solidification model, to realize self heating heat source)
- 2021-04-16 20:18:53下载
- 积分：1
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GPS基本原理及其matlab实现
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.)
- 2021-03-11 15:49:26下载
- 积分：1
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利用椭圆方程完成NACA0012翼型的网格绘制
利用椭圆方程完成NACA0012翼型的网格绘制(Finishing the mesh drawing of NACA0012 airfoil by using elliptic equation)
- 2019-01-10 16:42:07下载
- 积分：1
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FASTSIM
蠕滑力计算,滚珠轴承中蠕滑力计算时用到，修改后也可以用到滚珠丝杠中(fastsim function F=Get_Fastsim(C,Cp,ab,N))
- 2017-12-25 17:39:14下载
- 积分：1
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对流换热
说明： 通过对导热方程的推导，利用有限体积法，在matlab进行编程模拟，阐述对流传热的机理。(Based on the derivation of heat conduction equation, the finite volume method is used to simulate in MATLAB, and the mechanism of convective heat transfer is described.)
- 2020-07-20 13:08:46下载
- 积分：1
