儿童安全座椅中填充吸能泡沫对头部的保护效果分析*

doi:10.19562/j.chinasae.qcgc.2020.02.013

汽车工程 ›› 2020, Vol. 42 ›› Issue (2): 228-233.doi: 10.19562/j.chinasae.qcgc.2020.02.013

儿童安全座椅中填充吸能泡沫对头部的保护效果分析^*

李海岩, 李健, 崔世海, 贺丽娟, 阮世捷, 吕文乐

天津科技大学,现代汽车安全技术国际联合研究中心,天津 300222

收稿日期:2019-02-27 出版日期:2020-02-25 发布日期:2020-02-25
通讯作者: 李海岩,教授,E-mail:lihaiyan@tust.edu.cn
基金资助:
*国家自然科学基金(81371360,81471274,81201015)资助

Analysis on Child-head Protection Effects of Energy-absorbing Foam Filled in Safety Seat

Li Haiyan, Li Jian, Cui Shihai, He Lijuan, Ruan Shijie, Lü Wenle

Tianjin University of Science and Technology, International Research Association on Emerging Automotive Safety Technology, Tianjin 300222

Received:2019-02-27 Online:2020-02-25 Published:2020-02-25

摘要/Abstract

摘要： 采用Pam-Crash仿真软件,在已验证的6岁儿童乘员有限元模型上,施加ECE R129法规中规定的减速度曲线,以模拟汽车在侧面碰撞事故中后排儿童乘员的头部损伤情况。通过头部质心合加速度、头部性能指标(HPC)、脑组织Von Mises应力、颅内压、剪切应力和泡沫与头部之间的接触力等评价指标,研究侧面碰撞时安全座椅侧翼结构中头枕部位填充吸能泡沫对儿童乘员头部的保护效果。结果表明:安全座椅中填充泡沫可有效降低侧面碰撞对头部的损伤,且填充PU泡沫的保护效果要优于EPS泡沫。

关键词: 儿童安全座椅, 吸能泡沫, 侧面碰撞, 头部损伤

Abstract: The deceleration curve, as a provision in regulation ECE R129, is applied on a validated 6-year-old child finite element model to simulate the head injury of rear-row child occupant in a side crash incident of vehicle by using software Pam-Crash. The child head protection effects of energy-absorbing foam blocks filled in the head-rest of the side wing of safety seat in a side impact are studied in terms of a series of indicators including the resultant acceleration of head mass center, head performance criterion, the Von Mises stress of brain tissue, intracranial pressure, shear stress and the contact force between foam and head. The results indicate that the foam filled in child safety seat can effectively reduce head injury in side impact, and in which the protective effect of PU foam is better than that of EPS foam

Key words: child safety seat, energy-absorbing foam, side impact, head injury

李海岩, 李健, 崔世海, 贺丽娟, 阮世捷, 吕文乐. 儿童安全座椅中填充吸能泡沫对头部的保护效果分析^*[J]. 汽车工程, 2020, 42(2): 228-233.

Li Haiyan, Li Jian, Cui Shihai, He Lijuan, Ruan Shijie, Lü Wenle. Analysis on Child-head Protection Effects of Energy-absorbing Foam Filled in Safety Seat[J]. Automotive Engineering, 2020, 42(2): 228-233.

参考文献

[1] ARBOGAST K B, CHEN I, DURBIN D R, et al. Injuries to children in child restraints in side impacts[J]. Pediatric Emergency Care,2004,20(10):25-36.
[2] STARNES M, EIGEN A M. Fatalities and injuries to 0-8 year old passenger vehicle occupants based on impact attributes[R]. NHTSA Report No. DOT HS 809 410. Washington, DC:2002.
[3] HOWARD A, ROTHMAN L, MOSES A, et al. Children in side-impact motor vehicle crashes: seating positions and injury mechanisms[J]. Journal of Trauma & Acute Care Surgery,2004,56(6):1276-1285.
[4] WANG Q, KAPOOR T, TOT M, et al. Child restraint seat design considerations to mitigateinjuries to three-year-old children in side impact crashes[J]. International Journal of Crashworthiness,2007,12(6):629-644.
[5] SHERWOOD C P, FERGUSON S A, CRANDALL J R. Factors leading to crash fatalities to children in child restraints[J]. Association for the Advancement of Automotive Medicine,2003,47:343-359.
[6] ARBOGAST K B, CHEN I, DURBIN D R, et al. Injury risks for children in child restraint systems in side impact crashes[C]. IRCOBI Conference. Graz:2004.
[7] BROWN J, KELLY P, GRIFFITHS M. A comparison of alternative anchorage systems for child restraints in side impacts[C]. 41st Stapp Car Crash Conference,1997.
[8] KAPOOR T, ALTENHOF W, HOWARD A, et al. Methods to mitigate injury to toddlers in near-side impact crashes[J]. Accident Analysis and Prevention,2008,40(6):1880-1892.
[9] ARBOGAST K B, MOLL E K, MORRIS S D, et al. Factors influencing pediatric injury in side impact collisions[J]. Journal of Trauma & Acute Care Surgery,2001,51(3):469-477.
[10] BRIAN C, HUBERT L. Selecting material models for the simulation of foams in LS-DYNA[C]. 7th European LS-DYNA Conference,2009.
[11] 胡佳,水野幸治.ISOFIX型儿童座椅正面碰撞台车试验的有限元仿真[J].汽车工程,2011,33(5):401-404.
[12] CROOP B, LOBO H. Selecting material models for the simulation of foams in LS-DYNA[C]. 4th European LS-DYNA Users Conference. Germany:2003.
[13] 张金换,杨帆,周勇,等.基于ECE R129法规的儿童座椅侧面碰撞台车试验系统[J].汽车安全与节能学报,2015,6(3):237-244.
[14] 王晨.基于有限元模型的六岁儿童颅脑损伤分析[D].天津:天津科技大学,2015.
[15] BAUMGARTNER D, WILLINGER R, SHEWCHENKO N, et al. Tolerance limits for mild traumatic brain injury derived from numerical head impact replication[C]. Proc of International IRCOBI Conference on the Biomechanics of Impacts.Isle of Man, UK: IRCOBI,2001:353-355.
[16] RUAN J S. Impact biomechanics of head injury by mathematical modeling[D]. Detroit: Wayne State University,1994.
[17] 阮世捷,李盼东,李海岩,等.6岁儿童头部有限元模型的构建与验证[J].中国生物医学工程学报,2012,31(4):502-506.

儿童安全座椅中填充吸能泡沫对头部的保护效果分析^*

Analysis on Child-head Protection Effects of Energy-absorbing Foam Filled in Safety Seat

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