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1、在LSPrepost建立sph模型详细过程LS_Prepost要点操作1. 模型建立立方体模型初步坐标立方体Part编号沿三个坐标轴方向的节点数初步节点号：该Part第一个节点号码粒子球密体度模型球心坐标球体沿三个坐标轴方向的节点数球体半径圆柱体模型圆柱方向坐标底部中心坐标圆柱高圆柱半径径向节点数，一般设置同样轴向节点数圆台/锥模型圆台/锥方向坐标底部中心坐标圆台高圆台底部半径径向节点数，一般设置同样圆台顶部半径轴向节点数2. 参数定义*DATABASE_FORMAT计算结果输出格式数据库输出结果格式IFORMOutputformatforD3PLOTandD3THDTfilesEQ.0:LS
2、-DYNAdatabaseformat(default),EQ.1:ANSYSdatabaseformat,EQ.2:BothLS-DYNAandANSYSdatabaseformats.IBINARYWordsizeofthebinaryoutputfiles(D3PLOT,D3THDT,D3DRLFandinterfacefilesfor64bitcomputersuchasCRAYandNEC.EQ.0:default64bitformat,EQ.1:32bitIEEEformatRemarks:1. Thisoptionisnotavailableforeveryplatform.Ch
3、eckLS-DYNABanneruponexecutionoftheprogram2. Byusingthisoptiononecanreducethesizeofthebinaryoutputfileswhicharecreatedby64bitscomputersuchasCRAYandNEC.二进制*DATABASE_EXTENT_BINARY结果输出控制数据库NEIPHNumberofadditionalintegrationpointhistoryvariableswrittentothebinarydata-base输出二进forsolidelements.Theintegrati
4、onpointdataiswritteninthesameorderthatitisstoredin制结果memory-eachmaterialmodelhasitsownhistoryvariablesthatarestored.Foruserdefinedmaterialsitisimportanttostorethehistorydatathatisneededforplottingbeforethedatawhichisnotofinterest.给实体单元增添附带综合的点历史变量二进制数据库，综合点数据目的是储蓄记忆每个资料模型使它拥有自己的历史变量。对于使用者而言，定义资料对于储蓄
5、历史数据是很重要的，在数据储蓄前需要对其进行描绘。NEIPSNumberofadditionalintegrationpointhistoryvariableswrittentothebinarydata-baseforbothshellandthickshellelementsforeachintegrationpoint,seeNEIPHabove.给薄壳和厚壳单元增添附带综合的点历史变量二进制数据库，看下边的NEIPH。MAXINTNumberofshellintegrationpointswrittentothebinarydatabase,seealso*INTEGRATION_SH
6、ELL.Ifthedefaultvalueof3isusedthenresultsareoutputfortheoutermost(top)andinnermost(bottom)integrationpointstogetherwithresultsfortheneutralaxis.IfMAXINTissetto3andtheelementhas1integrationpointthenallthreeresultswillbethesame.Ifavalueotherthan3isusedthenresultsforthefirstMAXINTintegrationpointsinthe
7、elementwillbeoutput.Note:IftheelementhasanevennumberofintegrationpointsandMAXINTisnotsetto3thenyouwillnotgetmid-surfaceresults.SeeRemarksbelow.壳单元附带综合的点历史变量二进制数据库，可以参看*INTEGRATION_SHELL.假如采纳默认值3，则结果输出的是最远（高）和近来（下）的综合点，结果包括中间轴坐标。假如设置为3，单元有一个综合点，则三个结果将同样。假如值超出3，则在单元中的第一个MAXINT综合点将会被输出。注意：假如单元拥有一系列综合点，
8、而MAXINT没有被设置成3，则你将没法获取中间表面结果值，详见下边的附注。STRFLGSetto1todumpstraintensorsforsolid,shellandthickshellelementsforplottingbyLS-PREPOSTandASCIIfileELOUT.Forshellandthickshellelementstwotensorsarewritten,oneattheinnermostandoneattheoutermostintegrationpoint.Forsolidelementsasinglestraintensoriswritten.SIGFLG
9、FlagforincludingstresstensorintheshellLS-DYNAdatabase:EQ.1:include(default),EQ.2:exclude.EPSFLGFlagforincludingtheeffectiveplasticstrainsintheshellLS-DYNAdatabase:EQ.1:include(default),EQ.2:exclude.RLTFLGFlagforincludingstressresultantsintheshellLS-DYNAdatabase:EQ.1:include(default),EQ.2:exclude.ENG
10、FLGFlagforincludingshellinternalenergydensityandthicknessintheLSDYNAdatabase:EQ.1:include(default),EQ.2:exclude.CMPFLGOrthotropicandanisotropicmaterialstressandstrainoutputinlocalmaterialcoordinatesystemforsolids,shellsandthickshells.EQ.0:global,EQ.1:local.IEVERPEveryplotstatefor“d3plot”databaseisse
11、paratewrittentofilea.Thisoptionwilllimitthedatabaseto1000states:EQ.0:morethanonestatecanbeoneachplotfile,EQ.1:onestateonlyoneachplotfile.BEAMIPNumberofbeamintegrationpointsforoutput.Thisoptiondoesnotapplytobeamsthatusearesultantformulation.DCOMPDatacompressiontoeliminaterigidbodydata:EQ.1:off(defaul
12、t),norigidbodydatacompression,EQ.2:on,rigidbodydatacompressionactive,EQ.3:off,norigidbodydatacompression,butnodalvelocitiesandaccelerationsareeliminatedfromthedatabase.EQ.4:on,rigidbodydatacompressionactiveandnodalvelocitiesandaccelerationsareeliminatedfromthedatabase.SHGEOutputshellhourglassenergydensity:EQ.1:off(default),nohourglassenergywritten,EQ.2:on.STSSZOutputshellelementtimestep,mass,oraddedmass:EQ.1:off(
