简介:运用有限差分法对无限长接地矩形导体槽内的电位进行数值计算,通过MATLAB教学软件编程算出场域中若干点的电位,作图给出了槽内电位的直观分布图像。
简介:摘要:近年来,加工制造行业为应对新型产品面世以及产品加工制造压力,开始着重研究技术创新问题。基于FDM 技术的3D 打印机控制技术的出现,不仅可缓解企业竞争压力,同时简化制造技术,缩短开发周期,促使企业可高效完成产品制造。本文基于FDM 技术概述3D 打印机总体设计,并围绕基于外轮廓线的自适应分层算法、改进的分形扫描方法打印关键算法进行实例验证,对比打印质量以及打印时间,分析两种关键算法的可行性。
简介:Wepresentaparallelhybridalgorithmbasedonpseudospectralmethod(PSM)andfinitedifferencemethod(FDM)fortwo-dimensional(2-D)globalSHwavefieldsimulation.Thewhole-EarthmodelistakenasacrosssectionofsphericalEarth,andcorrespondingwaveequationsaredefinedin2-Dcylindricalcoordinates.SpatialderivativesinthewaveequationsareapproximatedwithefficientandhighaccuracyPSMinthelateralandhigh-orderFDMintheradialdirectiononstaggeredgrids.Thisalgorithmallowsustodividethewhole-Earthintosub-domainsinradialdirectionandimplementefficientparallelcomputingonPCcluster,whileretainshighaccuracyandefficiencyofPSMinlateraldirection.Atransformationofmomenttensorbetween3-DsphericalEarthandour2-Dmodelwasproposedtogivecorrespondingmomenttensorcomponentsusedin2-Dmodeling.Comparisonofmodelingresultswiththoseobtainedbydirectsolutionmethodshowsverygoodaccuracyofouralgorithm.Wealsodemonstrateitsfeasibilitywithalateralheterogeneouswhole-Earthmodelwithlocalizedvelocityperturbation.