PDF
Full
Outline
To reduce injuries of through-type headlamp to pedestrians’ pelvic limb in collisions, a series of pedestrian upper leg impact tests are designed to evaluate the crash response characteristics of a car equipped with through-type headlights at different impact points. The test results show that when the upper leg collides with the middle area of the headlamp, the impact force peak value reaches up to 6 424 N, the injury risk is very high. The paper proposes two optimizations to headlamp including low-temperature treatment and increasing initial injury, and a series of test are performed. The results show that the risk of injury to pedestrians’ legs is reduced by reducing the structural toughness of the through-lamp lampshade by low-temperature treatment which cause the lampshade crack at early stage, which effectively reducing impact force peak value and improving the energy absorption capacity in collisions. In contrast, the effect of only weakening toughness of interior plastic parts is not obvious.
PDF
191
79
| 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 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
