2025 Volume 81 Issue 15 Article ID: 24-15027
This study aims to investigate the effect of the size and shape of the front wall on blast pressure characteristics surrounding box-type structures by conducting explosion tests and numerical simulations. Prior to the tests, the method for evaluating blast pressure characteristics proposed by the Unified Facilities Criteria was described, and its concept was discussed. Then, explosion tests using C-4 high explosives were conducted to investigate the blast effects on two test specimens with different front wall widths. The test results showed a significant change in blast impulse acting on the front wall and top roof by varying the width of the front wall. The test results were then reproduced by numerical simulations. Based on the simulated results, the correlation between size, shape of the front wall, and the difference in blast duration as well as blast impulse was discussed.
