PSI - Issue 78

Fabio Micozzi et al. / Procedia Structural Integrity 78 (2026) 1451–1458

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front leg of the internal frame, as illustrated in Fig. 6. The results are reported in Fig. 7 and Fig. 8 where it is noted that the legs experienced a complex state of deformation with positive strains (elongation) and negative strains (shortening) determined by the combination of bending and axial force, and residual (permanent) plastic deformations clearly visible.

C2

B3 B5

C1

B4

C3

Fig. 6. Position of the strain gauges considered in this study.

Fig. 7. Strains in the leg of the external frame.

Fig. 8. Strains in the leg of the internal frame.