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

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Figure 6. Meshed model 0.0025 m and 0.025 m geometry created with ABAQUS.

Table 2. Applied mesh properties on the pipe model. Parameter

Value

Part

Pipe

Shape

Hexagon 158940 0.00198 2.01e-07 1.62 20 1117555 623837

Element

Geometric deviation factor

Min/Max. angle

89.55/90.45

Stable time increment

Aspect Ratio Minimum Element Size (% of average size) Nodes Elements 5. Result and Discussion 5.1 Plastic-hoop strain

One of the main objectives of stress analysis is to determine the point of the structure that has the highest and lowest stress levels [Dzulfiqar et al., 2021]. There is no universal theory or criterion of failure can be used for the general case materials [Budynas and Nisbett, 2015]. The results taken from the simulation are the distribution and magnitude of the plastic-hoop strain. From the distribution and magnitude of these stresses, the strength of the structure is analyzed in terms of material, whether it is still within the safe limits of yield criteria or not [Wierzbicki and Abramowicz, 1983]. Following are the results of the finite element analysis of the comparative research being carried out with reference to the pipe structure after the explosion (0.6 kg TNT loading and 0.8 kg with 0.0025 m meshing), shown in Figure 7.

Figure 7. Comparison of the maximum plastic strain from the explosive pipe from Rushton et al. [2008].