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This study investigates the distribution patterns and computational methods for shock wave overpressure in static explosions of elliptical explosive charges through simulations and experiments. Static detonations of elliptical charges with varying aspect ratios (major-to-minor axes) are simulated and experimentally conducted, with shock wave overpressure data captured at multiple distances and positions. A computational method for determining the overpressure distribution of elliptical charges is established based on classical shock wave overpressure calculation formulas. The results demonstrate that the overpressure distribution of elliptical charges is non-uniform and exhibits significant directionality, with higher overpressure observed along the minor axis than along the major axis. As propagation distance increases, the overpressure distribution gradually becomes more uniform, while larger aspect ratios lead to greater non-uniformity in overpressure distribution. Good agreement is shown between the proposed computational method and experimental results, indicating its reliability for supporting overpressure prediction and analysis in engineering applications.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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