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The electrical explosion of metal bridge foil is a key physical process in many fields, e.g. electric guns and slapper detonator. Due to the complexity of material properties, dynamic processes, and effects of geometric configurations, a large amount of earlier theoretical simulations used simplified physical models. In this paper, a three-dimensional electromagnetic-thermal-mechanical model was established. which was a full physical model describing the early behavior of explosive foil. The early thermal expansion process of the explosive foil under large current loading was simulated, and the evolution of magnetic field, current, temperature, expansion speed of the foil was analyzed. The phenomena of angular and linear current diffusions induced by the configuration and the resistivity were observed in the simulation. The temperature distribution in the bridge region obtained from the simulation is qualitatively consistent with experiment and simulation results of literature.
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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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