Abstract
This work presents ongoing research on the influence of fluidstructure interaction (FSI) effects on the ductile crack growth in perforated steel plates subjected to blast loading. The FSI effects were studied numerically by comparing the predictions from an uncoupled and a coupled FSI approach. Experimental results were used to evaluate the reliability of the numerical simulation. It was found that the numerical models were able to predict both crack initiation and crack growth in the plate, however, some distinct differences were also observed in the performance of the two approaches under consideration. The most important feature in predicting the observed fracture patterns was an accurate description of the blast loading during the FSI.
Highlights
One of the open research questions during severe blast loading events is the influence of fluid-structure interaction (FSI) effects on the dynamic fracture of lightweight and ductile structures [1,2]
This study investigates the influence of FSI effects on the dynamic response and fracture of blast-loaded steel plates
Special focus was placed on the influence of FSI on the ductile crack growth in the plates, where experimental data served as a backdrop to evaluate the accuracy of the numerical simulations
Summary
One of the open research questions during severe blast loading events is the influence of fluid-structure interaction (FSI) effects on the dynamic fracture of lightweight and ductile structures [1,2]. Recent advancements [3,4] have managed to establish experimental and numerical methodologies allowing for detailed studies on the FSI during the dynamic response of blast-loaded steel plates. A combination of experiments and numerical simulations can be used to obtain more insight into the underlying physics during extreme blast-structure interaction. The effect of perforations on the dynamic response of blast-loaded plates is generally a function of location, size and shape. This motivates further studies on FSI effects during the dynamic response of even more complex structures. This work presents an experimental and numerical investigation on the influence of FSI on the ductile crack growth in a thin, perforated steel plate
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