PSI - Issue 48

Đorđe Đurđević et al. / Procedia Structural Integrity 48 (2023) 88 –95 Đurđević et al / Structural Integrity Procedia 00 (2019) 000 – 000

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5

  MPa 

Fig. 9. Display of the stress field with associated scale

In the second part of the numerical analysis, the stresses and strains calculations of the same chosen model from the first part, model 1, were done in "ABAQUS" software. In Fig. 10. are given model of the connecting lug with finite elements mesh, boundary conditions and stress field. Force intensity was 10000N.





MPa ,

163MPa



e 



max

Fig. 10. Model of the connecting lug with finite elements mesh, boundary conditions and stress field

It can be seen from the Fig. 6. and Fig. 10. that the obtained stress values are quite equal in both softwares. Therefore, the finite element mesh of model 1 proved to be good, so it was also used in the third part of the numerical analysis. In the third part of the numerical analysis, the connecting lug shown in Fig. 3. was calculated in the „ KOMIPS “ software. The force intensity was 20000N. Computation model with boundary conditions is shown in Fig. 11. (a) and in Fig. 11. (b) is given deformed shape of the lug model with maximum displacement. Display of the stress field  , equivalent stress, around the lug hole with associated scale is given in Fig. 12. This lug was used for the experimental test which was also done in this paper in chapter 4. In the third part is shown how the strain and equivalent stress can be reduced if material is removed, too. Material is removed by drilling holes. Three lugs (Fig. 4), with different numbers of holes were considered.