PSI - Issue 72

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

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2.2. Geometrical model and boundary conditions

The current work introduced a designed sandwich tube with a length of 200 mm, a total diameter of 80 mm, and a thickness of 1 mm. This tube is modeled using shell elements in finite element software. The Cartesian diagram for this model is designated as: the x-axis is the transverse direction, the y-axis is the longitudinal direction, and the z axis is the vertical direction (see Figure 3). To represent the simulation close to actual conditions, boundary conditions are given with displacement on one side and encastre on the other side. Figure 4 shows the application of boundary conditions on a sandwich panel structure. Axial compression is performed on the top panel to determine the maximum displacement, while the impactor is given a speed to compress the panel to reach the maximum pressure. The simulation lasts for 0.005 seconds with variations in geometry.

Figure 3. Sandwich tube designs for the compression analysis.

Figure 4. Configuration of boundary conditions.

3. Results and Discussion The Johnson – Cook with elasto-viscoplastic material model was used to define the material behavior of mild steel tubes using the ABAQUS/Explicit finite component code. The demonstration consolidates the material flow