▍1. optimal-design
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.)
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.)
分享一个外国人编写的FDTD程序,可以用来计算微带线和微带贴片天线,程序中采用的是均匀网格划分,但也可以在容易地在它基础上改写成非均匀网格.其边界条件与Sheen的程序不同,这里采用二阶技术.(Prepared to share a foreigner FDTD procedures, can be used to calculate the microstrip lines and microstrip patch antenna, the procedure used is uniform mesh, but can also easily rewrite it into the basis of non-uniform grid. its boundary conditions with different processes and Sheen, where second-order technology.)
说明: FFT,整型数据代替浮点型数据 本程序是搜集资料并加上自己的分析,整了很长时间才测试通过的FFT程序,运行时间和所占内存方面都比较满意。(FFT, integer data instead of floating point data This program is to collect data and add their own analysis, the FFT program passed the test for a long time, the running time and memory occupied are relatively satisfactory.)
Hansen最新(2008)修订后的关于反演正则化方法的电子书与相应Matlab程序(Hansen the latest (2008) as amended on the inversion method is the e-book with the corresponding Matlab program)
考虑地球J2项摄动的轨道积分器,变步长,基于龙格库塔78阶,(orbital integrator considering the J2 pertubation, based on the Runge-Kutta 78 integrator, use automatic step control)
基于凸优化算法的矩阵填充稀疏矩阵理论的Matlab实现。(Based on convex optimization algorithm of matrix fill sparse matrix theory Matlab achieve.)
fluent多相流DPM模型中使用用户自定义函数对颗粒进行统计(DPM fluent multiphase flow model using user-defined functions for particle statistics)
fluent多相流DPM模型中使用用户自定义函数对颗粒进行统计(DPM fluent multiphase flow model using user-defined functions for particle statistics)
ABAQUS中用户材料子程序UMAT的开发主要解决两方面的问题:本构模型的建立和积分算法的选择。 本文主要研究非线性材料的UMAT实现方法,并重点研究其迭代算法部分,目前,用户材料子程序UMAT的迭代算法主要是常刚度法,常刚度法的优点在于算法原理较简单,程序编写较方便,缺点是当遇到复杂非线性材料时,其迭代次数较多,收敛速度也较慢,在这个情况下,本文采取的是一种迭代次数较少且收敛速度较快的切线刚度法,具体就是采用FORTRAN语言编制了基于Von-Mises模型的接口程序,并采用切线刚度算法,通过与ABAQUS自带本构关系计算的结果相比较,验证其正确性。(This paper studies the user subroutine UMAT of ABAQUS development methods, the use of FORTRAN language isotropic hardening material model of the interface program, studied the effects of such material is extremely elastic-plastic constitutive relation method. This article UMAT tightly around the secondary development of technology, the first principle of its interface detail, and then for the theory of nonlinear finite element incremental stiffness of the regular tangent stiffness method and the theory of algorithms to do an in-depth analysis of deduced a regular tangent stiffness and rigidity of the law of the specific expression of algorithm theory, and then the preparation of the two algorithms, respectively, of the UMAT program, and finally the establishment of a specific model checking, bringing with ABAQUS elasto-plastic constitutive relation of the calculated results compared to verify the correctness of the two.)
一个用于弹性接触分析的边界元fortran源程序(One for the analysis of elastic contact BEM fortran source)
说明: 岩土剑桥本构模型matlab程序,MATLAB Code for Cam-Clay Model(The matlab program of rock soil Cambridge constitutive model,MATLAB Code for Cam-Clay Model)
给出一个计算声子晶体结构的一维传递矩阵法。(Give a one-dimensional crystal structure of the phonon transfer matrix method.)
金属材料的随动强化有限元模型,适用于有限元分析的本构模型二次开发(Finite element model of kinematic hardening of metallic materials, constitutive model suitable for finite element analysis of secondary development)
ansys非线性各向同性,非线性随动硬化(ANSYS nonlinear isotropic, linear kinematic hardening)
电磁计算用的快速多级子算法,欢迎大家下载交流(Fast multilevel sub algorithm for electromagnetic computation)
有直接法,间接法,Bartlett法,Welch法(有????? ????? Bartlett ? Welch )