PSI - Issue 52

Leonardo Gunawan et al. / Procedia Structural Integrity 52 (2024) 560–569 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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simplistic geometrical design. The objective of the simulation is to calibrate and validate the CEL-based approach form capturing more realistic progressive damage in the structure due to hydrodynamic loading. The modeling framework was tested on ABAQUS (Dassault Systemes Simulia Corp., 2019). The geometrical model was discretized with shell elements and the damage progression of the aluminum were accounted by using ductile damage plasticity model (Yibo et al., 2013). Several parametric studies were conducted to evaluate the influence of material parameters and its effects on the shape of damage created on the aluminum panels.

2. Referred Work

Fig. 1. a. Aluminum box used in the experiment. b. Failed base plate (Francesconi et al. (2009)).

Francesconi et al. (2009) conducted an experiment by dropping an empty box-shaped specimen with an open lid into the water from a height of 3 meters without initial velocity. The empty box consists of 3 components made of Al 6082 material, namely a base plate, a set of 4 side walls connected by corner plates, and a base frame used as a link between the base plate and the side walls, as can be seen in Figure 1. The three components are connected using nuts and bolts with a total weight of 16 kg. In the experiment, observations were made of the failure of the base plate due to hydrodynamic impact load and the accelerations measured at the four corners of the base plate. A numerical simulation of the experiment has also been carried out with the results shown in Fig.2. The damage predicted by the simulation is in the cross form that differs with that of the experiment. The acceleration could be predicted well, but the level and the time of the highest peak is slightly different from those of the experiment. The simulation did not predict the occurrence of the second peak. In this paper, modeling is carried out to create a numerical model that is expected to be able to predict the structural failure that are more in line with experimental results.

Fig. 2. a. Simulated damage. b. Measured and simulated acceleration of the box.