PSI - Issue 12

Stefano Porziani et al. / Procedia Structural Integrity 12 (2018) 416–428 S. Porziani et al. / Structural Integrity Procedia 00 (2018) 000–000

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Fig. 11. Pin deformable surfaces with von Mises stress and response surface optimization setup

Fig. 12. Pin parameter-optimized shape: a) mesh; b) von Mises stress distributions on whole component and c) on fillet surface

the shape obtained along the whole profile was circular, in order to obtain a modified shape compatible with a circular manufacturing constraint. The optimized shape identified by ANSYS R DesignXplorer TM is reported in Fig. 12a, whilst the maximum von Mises stress value on the fillet decreased to 95 MPa, -28% with respect to the initial value of 132 MPa. Stress distri butions on the whole component and on the fillet surfaces are depicted respectively in Fig. 12b and Fig. 12c As for the bracket application, an optimization via BGM was also performed. In this case, applying the BGM without the coordinate filtering would have result in an optimized shape without any axial symmetry. Coordinate