PSI - Issue 47

M. Iqbal Maulana et al. / Procedia Structural Integrity 47 (2023) 150–158 Maulana et al. / Structural Integrity Procedia 00 (2019) 000 – 000

157

8

0.16

0.095

0.15

Convergence line

0.090

Convergence line

0.14

0.085

0.13

0.080

0.12

0.075

0.11

0.070

Plastic Hoop Strain (-)

Plastic Hoop Strain (-)

0.10

0.065

0.09

0.060

0.005

0.010

0.015

0.020

0.025

0.005

0.010

0.015

0.020

0.025

Meshing (m)

Meshing (m)

Figure 11. Mesh - strain curve for the applied TNT 0.8 kg.

Figure 10. Mesh - strain curve for the applied TNT 0.6 kg.

0.026

0.015

Convergence line

0.024

Convergence line

0.014

0.022

0.013

0.020

0.012

0.018

Displacement (m)

Displacement (m)

0.011

0.016

0.010

0.014

0.005

0.010

0.015

0.020

0.025

0.005

0.010

0.015

0.020

0.025

Meshing (m)

Meshing (m)

Figure 12. Mesh - displacement curve for the applied TNT 0.6 kg.

Figure 13. Mesh - displacement curve for the applied TNT 0.8 kg.

Based on the convergence mesh data for maximum plastic-hoop strain, it can be concluded that the meshing tends to be more stable in terms of the end result, namely between 0.0025 m – 0.0075 m mesh. And based on the convergence displacement mesh data, it can be concluded that the meshing has a more stable tendency toward the final result, namely between 0.0025 m - 0.0075 m meshing. To obtain more details regarding the effects of the meshing on the structural response, larger gap between observed mesh needs to be applied on the geometrical models. 5. Conclusions The result of finite element analysis with scale loading studies on the open-ended steel cylinders has been proven as above. Based on the results of the research that has been done in the paper above, it can be concluded that the percentage increase that occurs in the strain of the plastic circle with a TNT meshing loading of 0.0025 is 61.77%. As for the percentage of the minimum value of the TNT loading plastic strain with a meshing of 0.0025, that is equal to 60.86%. The comparison of research results with reference sources is not much different/harmonious for the percentage of the maximum displacement value of the structure with a TNT meshing loading of 0.0025, which is equal to 67.55% with a minimum percentage value of 0. Based on the mesh convergence data on the maximum plastic-hoop strain, it can be concluded that the ideal mesh for the simulation is 0.00625 m. Based on the convergence displacement mesh data, it can be concluded that the ideal mesh for the simulation is 0.00625 m. This is because this value is the most stable value among all the resulting data from the mesh convergence that we have carried out in this study.