资源描述：
《有限元分析报告报告材料法英文简介》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。
1、实用标准文案ThefiniteelementanalysisFiniteelementmethod,thesolvingareaisregardedasmadeupofmanysmallinthenodeconnectedunit(adomain),themodelgivesthefundamentalequationofsharding(sub-domain)approximationsolution,duetotheunit(adomain)canbedividedintovariousshapesandsizesofdifferents
2、ize,soitcanwelladapttothecomplexgeometry,complexmaterialpropertiesandcomplicatedboundaryconditionsFiniteelementmodel:isitrealsystemidealizedmathematicalabstractions.Iscomposedofsomesimpleshapesofunit,unitconnectionthroughthenode,andunderacertainload.Finiteelementanalysis:is
3、theuseofmathematicalapproximationmethodforrealphysicalsystems(geometryandloadingconditionsweresimulated.Andbyusingsimpleandinteractingelements,namelyunit,canusealimitednumberofunknownvariablestoapproachinginfiniteunknownquantityoftherealsystem.Linearelasticfiniteelementmeth
4、odisaidealelasticbodyastheresearchobject,consideringthedeformationbasedonsmalldeformationassumptionof.Inthiskindofproblem,thestressandstrainofthematerialislinearrelationship,meetthegeneralizedhooke'slaw;Stressandstrainislinear,linearelasticproblemboilsdowntosolvinglinearequ
5、ations,soonlyneedlesscomputationtime.Iftheefficientmethodofsolvingalgebraicequationscanalsohelpreducethedurationoffiniteelementanalysis.Linearelasticfiniteelementgenerallyincludeslinearelasticstaticsanalysisandlinearelasticdynamicsanalysisfromtwoaspects.Thedifferencebetween
6、thenonlinearproblemandlinearelasticproblems:1)nonlinearequationisnonlinear,anditerativelysolvingofgeneral;2)thenonlinearproblemcan'tusesuperpositionprinciple;3)nonlinearproblemisnotthereisalwayssolution,sometimesevennosolution.Finiteelementtosolvethenonlinearproblemcanbediv
7、idedintothefollowingthreecategories:1)materialnonlinearproblemsofstressandstrainisnonlinear,butthestressandstrainisverysmall,alinearrelationshipbetweenstrainanddisplacementatthistime,thiskindofproblembelongstothematerialnonlinearproblems.Duetotheoreticallyalsocannotprovidet
8、heconstitutiverelationcanbeaccepted,so,generalnonlinearrelationsbetweenstressandst
