Experimental and numerical studies on the failure modes of steel cabin structure subjected to internal blast loading

Meanwhile, a number of numerical simulations were carried out by using the validated numerical method. Through analyzing the numerical and experimental results, three damage forms of cross-shaped damage, curve-shaped damage and sphere-shaped were observed. In cross-shaped damage form, six failure modes were concluded: plastic deformation (mode I); petalling in plates center (mode II*C); Capping in plates center (mode IIC); corner shear failure (mode IIIin); edge tearing (mode II); and shear failure over entire plate (mode III). In addition, the failure process and mechanisms of each mode were also analyzed.