PSI - Issue 41

Ilham Widiyanto et al. / Procedia Structural Integrity 41 (2022) 274–281 Widiyanto et al. / Structural Integrity Procedia 00 (2022) 000 – 000

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The results of the displacement simulation in the S1-1-A model can be seen in Fig 6. In the simulation results, the maximum value of displacement is 1.860E+02 mm.

Fig. 6 Displacement result S1-1-A model The results of the displacement simulation in the S2-1-A model can be seen in Fig 7. In the simulation results, the maximum value of displacement is 1.501E+02 mm.

Fig. 7 Displacement result S2-1-A model The results of the displacement simulation in the S3-1-A model can be seen in Fig 8. In the simulation results, the maximum value of displacement is 1.505E+02 mm.

Fig. 8 Displacement result S3-1-A model

Based on the results obtained, the critical buckling load will increase based on the type of geometry. Ring-stiffened cylinder shell provides the highest critical buckling load. The value of the critical buckling load from nonlinear is approximately 95.5% of the load is linear simulation. In the meshing size, it uses a stringer-stiffened cylindrical shell geometry type. Of the 3 meshing, the highest nonlinear critical buckling load value is at a meshing size of 40 mm. The larger the meshing size, the less accurate the simulation will be the value of critical buckling load on nonlinear approximately 88.6% of the linear critical buckling load. Meanwhile, the geometry type is ring-stiffened cylinder shell for the variation in diameter. The highest critical buckling load results are found in the minor diameter of 711.2 mm. This can happen because, in this study, it is assumed that the same structural weight has the same thickness. The critical buckling load value of nonlinear is approximately 78.8% from the nonlinear critical buckling load. From the FEA study, it can be said that the critical buckling load on the ring-stiffened cylinder shell decreased significantly, as stated by Li et al. (2021). 5. Conclusions Based on the simulation that has been done, the obtained results are significant. This simulation used nine variation models which concludes: