车辆乘员眼部损伤风险仿真评估

doi:10.19562/j.chinasae.qcgc.2021.08.012

Abstract

Abstract:

Based on the anthropometric parameters of Chinese 50th percentile adult male， a head model of Chinese physical sign safety dummy with biomechanical response of eye tissue is developed. The acceleration response of the head model in the drop calibration test is verified in LS?DYNA software， and the influence of airbag on eye tissue damage under frontal impact condition is explored. The damage risk curve of normalized energy and damage probability of eye tissue is established by using the simulation data. The results show that in the head drop simulation test， the head acceleration response of the Chinese physical sign crash dummy is higher than that of the Hybrid III dummy； in the frontal crash condition， the simulation test results of the occupant restraint system show that when the crash speed is higher than 55 km/h， the risk of retinal detachment will increase， and the von Mises stress and deformation of sclera will reach the threshold of eyeball rupture.

Key words: Chinese physical signs, head model, eye tissue, von Mises stress

Shaopeng Li,Shucai Xu,Shuang Chen,Binbing Huang,Jiwei Yin. A Simulation Investigation of Eye Injury Risk of Vehicle Occupant[J].Automotive Engineering, 2021, 43(8): 1210-1215.

Figures/Tables 14

References 25

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参数	数值
头部质量/kg	4.15
头围/mm	560
头宽/mm	154
头长/mm	184
枕骨到质心/mm	45.11
枕骨到头顶/mm	142.45

眼组织结构	密度/（kg·mm^-3）	弹性模量/MPa	泊松比
角膜	1.43E?6	0.86	0.42
巩膜	1.40E?6	3.0	0.47
视网膜	1.1E?6	0.03	0.435
玻璃体	1.025E?6	0.18	0.4

参数	大气	充入气体
温度/K	293	760
摩尔质量/（g·mol^-1）	29	28
恒压摩尔热容/［J·（mol·K）^-1］	26.73	27.55
摩尔气体常数/［J·（mol·K）^-1］	8.314

碰撞速度/（km·h^-1）	30	40	50	60
最大应力/MPa	1.73	2.14	2.36	5.59
最大变形量/mm	1.56	2.02	2.73	3.12
眼球是否破裂	否	否	否	是
视网膜是否脱落	否	是	是	是

A Simulation Investigation of Eye Injury Risk of Vehicle Occupant

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References 25

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