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scan0031 - 5-8 Simulation II l—Theoretical Workbench...

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Unformatted text preview: 5-8 Simulation II l—Theoretical Workbench Error, \gfient Hoog Stflsn, MPa l 125 127.4 1.9 Axial Stresgsy), MPa I 45 46.5 I 3.3 Radial Stress @L MPa —35 -34.9 ‘ 0.3 Mal Deflection, mm 0.0458 0.0465 1.5 Thus the Workbench model arrives at a solution within a few per cent of the theoretical values, and, since the theoretical solution assumes a uniform distribution for the axial stress, the Workbench solution may give a better picture of the actual stress state in that instance. Before we quit, let’s examine an alternative meshing. In ANSYS Workbench we can manage the mesh in a number of different ways in addition to those already discussed. We illustrate by continuing with an alternate analysis of the pressure vessel. First clear the results already calculated and return to the basic mesh. 19. File > Clean > Yes Do you want to clean this result? 'fes - No 3 Figure 5—11 Clean results dialog. 20. Mesh > Details of “Mesh” > Advanced > Element Size > (enter 0, return) Default 21. Mesh > (right click) Generate Mesh (Gives us the mesh we started with.) Since the interior fillet is the source of stress concentration we will use this geometry to refine the mesh. 22. Mesh > (right click) Insert > Refinement (Select the interior fillet; see next figure.) ...
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