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2A. Thermal-Stress Analysis – Sequential Coupled Field Axisymmetric Pipe with Fins Description Continue the axisymmetric fin problem from Workshop 12 to do a thermal-stress analysis. The pipe has an internal pressure as shown on the next page. Also, since the top line (at Y=1.0) represents a line of repetitive symmetry, we will couple the UY degrees of freedom of all nodes along that line. 13A. Thermal-Stress Analysis – Sequential Coupled Field Axisymmetric Pipe with Fins Loads and Boundary Conditions Nodal Temperatures from Thermal Analysis in Workshop 11 10,000 psi Internal Pressure Couple UY DOF at Y=1 Symmetry B.C. on Lines
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13A. Thermal-Stress Analysis – Sequential Coupled Field Axisymmetric Pipe with Fins 1. Enter ANSYS in the working directory specified by your instructor using “pipe-th-str” as the jobname. 2. Resume the pipe-th.db database file from Workshop 12 (or pipe-th.db1): Utility Menu > File > Resume from … Select “pipe-th.db”, then [OK] Or issue: RESUME,pipe-th,db 3. Set the GUI Preferences to Structural: Main Menu > Preferences Select “Structural” and unselect “Thermal”, then [OK] 4. Change the title: Utility Menu > File > Change Title . .. /TITLE = “2D AXI-SYMM THERMAL-STRESS ANALYSIS W/ INT. PRESS - ESIZE=0.125” [OK] 13A. Thermal-Stress Analysis – Sequential Coupled Field Axisymmetric Pipe with Fins 5. Delete the convection loading on the solid model lines: Main Menu > Preprocessor > Loads > Define Loads > Delete > All Load Data > All SolidMod Lds [OK] Or issue: /PREP7 LSCLEAR,SOLID 6. Change the thermal elements to their corresponding structural elements: Main Menu > Preprocessor > Element Type > Switch Elem Type Select “Thermal to Struc”, then [OK] Review the warning message, then [Close] Or issue: ETCHG,TTS
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13A. Thermal-Stress Analysis – Sequential Coupled Field Axisymmetric Pipe with Fins 7. Set the element behavior to axisymmetric: Main Menu > Preprocessor > Element Type > Add/Edit/Delete [Options . ..] Set K3 = Axisymmetric, then [OK] [Close] Or issue: KEYOPT, 1, 3, 1 8. Apply temperature load from thermal analysis in Workshop 12: Main Menu > Preprocessor > Loads > Define Loads > Apply > Structural > Temperature > From Therm Analy Select the “pipe-th.rth” results file, then [OK] Or issue: LDREAD,TEMP, , , , ,pipe-th,rth 9. Apply symmetry boundary condition on lines at Y=0: Main Menu > Preprocessor > Loads > Define Loads > Apply > Structural >Displacement > Symmetry B.C. > On Lines Select lines 3, 5, 11, then [OK] Or issue: DL,3, ,SYMM DL,5, ,SYMM DL,11, ,SYMM 13A. Thermal-Stress Analysis – Sequential Coupled Field Axisymmetric Pipe with Fins 10. Couple UY dof on nodes at Y=1: 10a. Select nodes at Y=1: Utility Menu > Select > Entities . .. Select “Nodes” and “By Location”
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This note was uploaded on 01/20/2010 for the course ME master taught by Professor Mon during the Spring '09 term at Hanyang University.

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36 ì�´ì��ë ¥ì�°ì�µ[1] - 2A....

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