FINITE ELEM ANLYSDES
FINITE ELEM ANLYSDES EML 4500
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This 4 page Class Notes was uploaded by Paige Cruickshank on Friday September 18, 2015. The Class Notes belongs to EML 4500 at University of Florida taught by Nam Kim in Fall. Since its upload, it has received 12 views. For similar materials see /class/206706/eml-4500-university-of-florida in Engineering Mechanical at University of Florida.
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Date Created: 09/18/15
Tutorial 2 FEA Using Nei Nastran Editor NEi Nastran Editor So far we used Nastran FX for prepostprocessing Nastran FX 39nPUt NEi Nastran OUtPUt Nastran FX Create FE model file Solve FE Eq fie Analyze results Input file 80column Text file TutorialNAS Output file Text file Tutorial0UT or binary file Tutorial02D NEi Nastran Editor Can generate input text file directly Need to know formats of input text files Can easily modify input file for debugging errors Provide graphical postprocessing capability NEi Nastran Editor cont DISPLACEMENTLPRINTJLOT ALL 123 I o In TPLOTC m w 7 Example of Nastran Input File SOL LINEAR STATIC ISPLACWT PRINT PLOT ALL STRESS PRINTPLOTCORN ER ALL Case Control SPC 1 LOAD 1 BEGIN ULK GRID 1 0 0 0 0 0 GRID 2 0 12 s 0 0 GRID 3 0 12 0 0 0 B 1 1 1 2 1 0 0 CBAR 2 1 2 0 0 PB 1 10049037 BUIK Data 0 0 MATl 1 3 E7 0 0 0 FORCE 1 0 1 50 0 0 SEC 1 1 123456 0 PC 1 3 123456 0 EN39DDATA Nastran Input File Format CASE CONTROL Entry Set up analysis procedure SOL LINEAR STATIC or SOL 101 Analysis type is linear static analysis DISPLACEMENT PRINT PLOT ALL Output displacements of all nodes to output text and binary file STRESS PRINT PLOT CORNER ALL Output stresses of all elements to output text and binary file SPC 1 Use displacement BC number 1 LOAD 1 User applied load number 1 Nastran Input File Format cont BULKDATA Entry Structured field 8 columns for each data entry Define a node IGRID IID ICP x IY z ICD ID node number CP coordinate sys X Y Z coordinates Define an element ICBARIEID IPID IGA IGB x1 x2 x3 EID element number PID propertle GA GB two nodes X1 X2 X3 vector to define local xy plane Define element properties IPBARIPID IMID IA In In IJ INSM PIDpropertynumber A area I12 area momentofinertia MID material number J torsional constant NSM nonstructural mass Nastran Input File Format cont Define material properties IMAT1IMD IE IG INU IRHO IA ITREFIGE I MID material number E Young s modulus G shear modulus NU Poisson s ratio RHO density A thermal expansion coeff TREF reference temp GE structural damping Applied Force IFORCEISID IG ICID IF IN1 IN2 IN3 I I SID load set number G node number CID coordinate system F force magnitude N1 N2 N3 force direction Displacement boundary condition ISPC ISID G1 Ic1 D1 G2 I02 I02 I I SID displacement BC number G1 G2 node number C1 C2 components D1 D2 displacement values Ex C1 123456 D1 00 Fix Ux Uy Uz Rx Ry and Rz Ex C1 14 D1 00 Fix Ux and Rx
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