NX Nastran – Basic Fact Sheet - Iberisa

1 NX Nas tra n Basi c pr ovides youac ces s to a br oa d li brar y of fi niteel emen t ty pes and mat erialmo del s, robus t man ipu la tion oflo ad cas es, alo ng with seve raleff ici ent solut io n seque nce s forli ne ar st at ics , bu ckl ing and normalmo des analy ses on mod els ofun li mi te d siz e. A hea t tran sferca pa bil it y provi de s sol uti ons tost ea dy- st ate and tra nsi ent ther malan alysi s and desi gn pr Nas tra n Ba si c s no nlin ear ca pab ilit y enab les us er s to inc lud e larg e deformationsand non-linearma te ri al s in thei r an alyse ar t si mp ly , add as your needsev olveNX Nas tra n Basi c wi ll allow yo u to initiatedigi tal sim ulat ion into your prod uct de velopment proce ssby prov id in g ac ces s to a broad libra ry of fini te element types and mate ria l mod els, rob us tma nipu la ti on of load ca ses.

2 Alo ng wit h seve ral effic ie nt solutionse que nces for linear statics(i ncl udin g buckli ng ) and norma l mode s anal yse s on mod els of unlim ite d size. You can also performsen si ti vit y stu di es bas ed on thes e anal ysis types . NX Nas tran s powe rful an alys is capabilitieswillpr ov ide you wit h th e to ols you need for: Lin ear sta tic s, incl ud ing inert ia rel ief Nor ma l mo des Buc kl in g Desi gn sen sit iv ity (s tat ics , mode s, buckling) Mod el chec ko ut Hea t tra nsf er Bas ic non li nea r Cou pl ed st ruc tur e/ ac ou sti c mode sNXNastran BasicTh e core set of CAE cap abil iti es th at everynew product developmenteffo rt reliesonNXBenefitsReducerisk by using simulationto save time and cost comparedto physicaltest cyclesAccelerateinnovationthroughrapid iterationand numerous what-if studiesInvestigateproductperformancevirt uallyunder all possibleoperatingconditions,includingthe rmally-influencedoperatingconditionsNX Nastran Basic is the core subsetof NX Nastransoftwareand includesa robustsuite of linear statics,normalmodes.

3 Bucklinganalyses,heat transferand Basic Nastran Basic can play a key role in your virtualproductdevelopmentprocessby providingthe most widelyused CAE solutionsfor digitalprototypingand simulationof shee tSiemens PL M Sof tw em en s. co m/ nxfact sh eetNXFeat ure sPowerfulanalysiscapabilitiesCompleteele mentlibraryincludingspot weldsFull range of materialmodelsEasy combinationand additionofload casesComprehensivearray ofEigensolversDesignsensitivityanalysisf orassessingdesignchangesEfficientsolvers Comprehensivethermalanalysiscapabilities Basic nonlinearcapabilityfor largedisplacementand materialnonlinearitiesSurface-to-surface contactfor linearstatic solutionsGlue connectionsfor joiningdissimilarmeshesNX Nas tra n Ba si c in clu de s a co mple te ele me nt li brary including1D , 2D and 3D low- and high er-orderele men ts.

4 Sca la r an d spe ci al el em ents inc lud ing spot weld as well as p- ele ments(that can be comb inedwit h ot he r elem ent s).Tab le 1 Elem ent typessu pportedby NX Nastran BasicEle ment typeEle ment na meDes criptionScalarELASS calarspring(severalvariations)MASSS calarmass (severalvariations)1 DBARS implebeam elementBE AMComplexbeam elementincludingshear centeroffset andvar iab le cross sect ionBENDC urvedbeam,pipe or elbowRODRod elementtension-compression-torsionelemen tCO NRODTU BE2 DQU AD 4 Quadrilateralplate with membrane-bend ing or pla nestrain be ha viorQUAD8 Higher-orderquadrilateralshell elementQUADRQ uadrilateralmembraneor shellSH EARS hear panelTR IA 3 Trian gul ar plat e wi th mem br ane -be nding or plai n st rain beha vi orTR IA 6 Higher-ordertriangularshell elementTR IATriangularmembraneor shell3 DHEX ASix-sidedsolid elementwith 8-20 gr id pointsPE NTAFive-sidedsolid elementwith 6-15 grid pointsTE TRAFour-sidedsolid elementwith 4-10 grid pointsPY RAMID5-sidedsolid elementwith 5-13 grid

5 PointsRigidRBARR igid bar elementRBE 1 Rigid body connectedto an arbitrarynumberof grid pointsRBE 2 Rigid body with independentDOFs at a grid point anddep end ent DOFs at an arbitrarynumberof grid pointsRRO DPin-endedrigid rodRTRPLTR igid triangularplateInterp olat ionRBE 3 Definesmotionof a referencepoint as the weightedaverageof the mot ions at a set of grid pointsRSPL INEM ultipointconstraintsfor the interpolationof displacementsat gr id point sCom pos itesBEA MComplexbe am elementQUAD4 QuadrilateralplateQUAD8 Higher-orderquadrilateralplateQUADRQ uadrilateralplateTR IA 3 TriangularplateTR IA 6 Higher-ordertriangularplateTR IA RTriangularplatefact sh eetNXTab le 1 (con tin ued)

6 Ele ment typeEle ment na meDes criptionp-elementsHEX ASix-sidedsolid elementwith 8-20 gr id pointsPE NTAFive-sidedsolid elementwith 6-15 grid pointsTE TRAFour-sidedsolid elementwith 4-10 grid pointsAxis ymmetricCON EAXC onicalshellTR IA X6 Triangularcross sec tion ringCTRA X3 TriangleCTRA X6 Higherorder triangleCQ UA DX4 QuadCQ UA DX8 Higherorder quadCrack tipCRAC2 DTwo-dimensionalcrack tip elementCRAC3 DThree-dimensionalcrack tip elementGeneralCON M16-b-6 symmetricmass matrixCO NM2 Concentratedmass with offsetsDM IDirect matrix inputGEN ELGeneralelementWeldCWELDWeld connectionelementFas tenerCFASTF astenerelementfor shell patch conne ctionNX Nas tra n Ba si c pr ovi de s a fu ll rang e of materialmod els : iso trop ic , or thotropic, ani sotropicandtem per at ur e-d epe nde nt.

7 It als o allo ws for eas y com bination(or ad dit ion) of load cases, such as point ,li ne and sur fac e loa ds on el em ents ; load s app lied dire ctly to geom et ry; the rma l loads; enforcedde for ma tio n; and weig hte d com bina tions of each typ le 2 Stat ic loadingtypesin NX Nastran BasicLoad ty peLoa d nameDes criptionPointFOR CEConcentratedforce (sever al variations)MO MENTC oncentratedmoment(severalvariations)Curv eGM LOADLoad distributedalong a geometriccurv ePLO AD1 Concentrated,uniformor linear load appliedto 1D elementsSur faceGM LOADLoad distributedalong a geometricsur fac ePLO ADPressureload appliedto 2D elementsor the face of 3 Delem ent s (sev eral variations)

8 VolumeGRA VSteady-stateaccelerationvector sRFO RCEA ngularvelocityor accelerationACCELS patialvaryingaccelerationloadBolt preloadBOL TFORBolt preloadappliedto beam elementsEnforcedGM BCEnforceddisplacementsfor geometry (cu rve s and surfaces)motionGM SPCC onstraintsappliedto geometrySPCC onstraintsappliedto grid points(severalvariations)fact sh eetNXTab le 2 (con tin ued)Load ty peLoa d nameDes criptionThermalTE MPTemperaturesappliedto grid points(sev eral variations)TE MPP12D elementtemperaturefieldTE MPRB1D elementtemperaturefieldAxis ymmetricFOR CEAXC oncentratedforceMO MA XConcentratedmomentPLO AD1 XSurfacetractionPR ESA XPressureloadingSPC AXConstraintsTE MPA XAppliedte mper ature sGeneralDM IDirect matrix inputComb inat ionLOA DCombineload setsNon -st ruc tu ral mass NSMNon-structuralmass setsNX Nas tran Basic prov ides severalnon-elementalapproachesfor connecting meshe s andtrans ferringloads.

9 This can le 3 Non -el em ent al meshconnectionsin NX Nastran BasicTyp eNameDescriptionCons traintMPCC onstraintequationsused to conne ct spe cif ied degrees-of- freed omRSS CONC onstraintre lation to connectshell to solid elementsContactBSU RFA set of shell elementfaces that def ine a contac t surfaceBSU RFSA set of solid elementfaces that definea contactsurfaceBCT SETPai rs of cont act surfaces tha t can con tact in a linea r stat ic sol uti onGlueBSU RFA set of shell elementfaces that def ine a glue surf aceBSU RFSA set of solid elementfaces that definea glue surfaceBG SETP airs of gl ue su rfac es that are in conne ction in an y solut ion typ eAd diti onal cap ab il ities for linearstaticand Eigenvaluesolutions:Li near st ati c so lu ti on s.

10 Sur fac e-t o- su rfa ce co nta ct fo r shel l and solid ele me nts Iner ti a re li ef fo r un res tr ai ned mo dels El em ent -ba se d it era tiv e solv er fo r ver y fas t solut ions of te trahe dron meshed models Bol t pre lo ad effec ts The rma l ex pa ns io n fo r rigid el em entsNo rm al modesol ut io ns La nc zo s Re sid ua l ve cto rs for resi du al flexibility Di ff ere nti al sti ffn ess effects Unco ns tra in ed mod el solutio ns Sol uti on ab ou t a co nt ac t conditi on Ex po rt mo de s to ADAMS or RecurD ynDesignsensi tiv it y anal ysisfor as ses singde sig n ch an ges: Sha pe and siz ing des ign varia bles Pres et obj ecti ve an d con str aint s Weig ht , vol um e El eme nt stre ss , stra in, forc e Di sp la cem ent , rot at io n, re act ion force Norm al mod es Ei gen va lu e Bu ckli ng loa d fa ct or Co mp osi te s: la mina stra in, fo rce and failure ind ex Us er- de fin ed obje cti ve and constr aint s Effi cie nt handl in g of hund red s of de sig n va ria bl es, co nstr ain ts and loa d ca se s bu ckl ing in a sin gle runEff ici en t sol ve rs.