Explosion containment vessels (ECVs) have been widely used as they can contain the shock wave and products from high explosions. Recently, there has been an increased interest in composite materials using in ECVs because of their advantages of high specific strength, reduced maintenance costs, and improved corrosion resistance. In this paper, an experiment was carried out using two e-glass/epoxy composite ECVs with an aluminum alloy inner layer to investigate the dynamic fracture and anti-explosion capacity of composite ECVs. The experiment contains two stages. In the first stage, two vessels were tested using 10g and 20g explosive charge, respectively. Dynamic circumferential and axial strain was measured. The vessel under the blast of 10g explosive was in good condition while the other one was failure as a through crack appeared. In the second stage, a large explosive charge of 30g was detonated at the center of vessel and the vessel was damaged seriously. The fracture characteristic is described in detail. The experimental results show that the range of the anti-explosion capacity ζ is between 1.43% and 2.87% which is much higher than that of single layer ECVs and also higher than that mentioned in other literature. A three-dimensional finite element analysis model is established using the ALE method based on ANSYS/LS-DYNA to simulate the experiment results of experimental vessel under the explosive loading. Good agreement between experimental and numerical results can be obtained by comparing the bulging phenomenon and hoop strain around the explosion center. The numerical results also show that the delamination appears and the delamination between the inner metal layer and adjacent composite layer is especially obvious.

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