Full
Outline
Aluminum foam is a new type of material for shield of spacecrafts which bears fine characteristics when subjected to hypervelocity impact of space debris. A microstructure model of geometry for metallic foams was developed to simulate their manufacturing process. Numerical simulations on hypervelocity impact were carried out using self-programmed Smooth Particle Hydrodynamics, and the proposed model is validated by comparison with experimental results. Two Al-foam-containing shield structures against space debris were presented including Al-foam stuffed shield and Al-foam sandwiched shield. Ballistic limit curves of both shields were obtained respectively through numerical simulations. Analyses results indicate that the shield performance of Al-foam stuffed shield is better than that of Al-foam sandwiched shield for the majority of impact speed range referring to shield against space debris.
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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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