PSI - Issue 72

Muhammad Daffa Alifianto et al. / Procedia Structural Integrity 72 (2025) 392 – 400

399

The energy absorbed by the target plate has been carefully depicted in the illustrative depiction presented in Figures 13 and 14 to provide a visual representation of these different responses. This graphical representation serves as a valuable aid in understanding the dynamic interactions between forces, displacements with time, and the resulting structural response, contributing to a comprehensive understanding of the complex dynamics governing structural behavior under the influence of various mesh parameters. The simulation results of axial compression with various mesh geometries show that the smaller the mesh size (1 mm to 15 mm), the more accurate the results. The von-Mises stress increases significantly when exceeding the material's elastic limit, especially under axial compression conditions. It can be seen from the graph in Fig. 14 that the most significant change is in the 1mm mesh variation because the mesh size used is getting smaller, and the mesh 11 to 15 has the exact change. The simulation also shows the relationship between mesh variation, stress, and structural response and the importance of geometry and material properties in assessing structural integrity. This study provides important insights into the behavior of sandwich panel tubes under axial compression.

Mesh 1 mm Mesh 3 mm mesh 5 mm Mesh 7 mm Mesh 9 mm Mesh 11 mm Mesh 13 mm Mesh 15 mm

400000

0.09967 0.09965 0.09964 0.09963 0.09962 0.09961 0.09961 0.09961

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Mesh 1 mm Mesh 3 mm Mesh 5 mm Mesh 7 mm Mesh 9 mm Mesh 11 mm Mesh 13 mm Mesh 15 mm

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100000

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Mesh 1 mm Mesh 3 mm mesh 5 mm Mesh 7 mm Mesh 9 mm Mesh 11 mmMesh 13 mmMesh 15 mm 0.00

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0.02

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Displacement (mm)

Figure 14. Displacement graph of sandwich panel with mesh variation.

Figure 13. Force graph of sandwich panel with mesh variation.

4. Conclusions This article describes the axial compression process on a sandwich panel using ABAQUS software and using the energy absorption theory. The results obtained from this simulation were obtained with a load force of 12.5 kN and various types of meshes. From the simulation, the maximum and minimum values for total deformation, equivalent stress, and safety factors show differences between fine, medium, and coarse meshes. The most immense maximum total force value is 400 kN at a mesh variation of 1 mm, and the smallest minimum total deformation value is 350 kN at a mesh size of 15 mm. The convergence test used the mesh face sizing, mesh size 1 – 15, and fine center of relevance. From the convergence results, the most optimum value for the analysis of this study with aluminum plate objects is a meshing size of 1 mm - 9 mm because, at the meshing size, the difference in stress values and safety factors tends to be minor, and the graph approaches a constant. References Alwan, F.H.A., Prabowo, A.R., Muttaqie, T., Muhayat, N., Ridwan, R., Laksono, F.B., 2022. Assessment of ballistic impact damage on aluminum and magnesium alloys against high velocity bullets by dynamic FE simulations. Journal of the Mechanical Behavior of Materials 31, 595-616 Ansori, D.T.A., Prabowo, A.R., Muttaqie, T., Muhayat, N., Laksono, F.B., Tjahjana, D.D.D.P., Prasetyo, A., Kuswardi, Y., 2022. Investigation of Honeycomb Sandwich Panel Structure using Aluminum Alloy (AL6XN) Material under Blast Loading. Civil Engineering Journal 8, 1046 1068