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To improve the crashworthiness of automobile energyabsorbing boxes, the paper proposes three different biomimetic doublediamondribbed multicell thinwalled structures, inspired by the microstructure of bamboo. Initially, the finite element model for these biomimetic structures is established and its impact resistance is compared with that of the traditional octagonal multicell thinwalled structure through finite element simulations. Subsequently, the paper analyzes the effects of the arrangement of doublediamond ribs and the thickness of inner walls on the energy absorption characteristics and deformation modes of the novel structures. The results indicate that the biomimetic structures offer significantly better energy absorption than their traditional counterparts. The arrangement of doublediamond ribs and the thickness of both inner and outer walls affect the structural energy absorption characteristics. With the increase in the inner wall thickness, the initial peak force on the structure decreases, but the total energy absorption and specific energy absorption decrease, leading to a reduction in load stability. The proposed biomimetic doublediamondribbed multicell thinwalled structure effectively reduces the injuries to occupants in frontal vehicle collisions, and can be applied in the design and development of energyabsorbing boxes for new energy vehicles.
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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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