Chest motion equation and injury risk of a 3-year-old child under different constrained loads

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Journal of Vibration and Shock ›› 2020, Vol. 39 ›› Issue (1) : 216-222.

HAN Yong1,2,3, TANG Huicong1,3, TIAN Fengyi2,3, HUANG Hongwu1,3, Mizuno Koji4

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Abstract

The kinematic response of a 3-year-old child occupant’s chest under impact loading is a blind spot of research. Based on the ECE R44 front collision test regulation, two types of CRSs’ front collision numerical analysis models were established using the hybrid III 3-year-old child dummy and the total human model for safety 3YO (THUMS 3YO) occupant finite element model academic version 4. Then the chest motion equation of Hybrid III 3-year-old child dummy was built to analyze relations among chest acceleration and internal and external forces exerted on chest. Injury risks of THUMS 3YO child’s chest soft tissue organ in two types of CRSs were contrastively analyzed. The analysis results showed that hybrid III 3-year-old child dummy’s chest acceleration is related to external and internal forces exerted on chest, and external force is the most important influence factor on chest acceleration; THUMS 3YO child occupant chest soft tissue organ’s stress and strain both exceed the damage threshold, and the damage value in the front guard plate type CRS is larger than that in the 5-point back-belt type CRS; the study results provide an important guide for design of CRS.

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3-year-old child occupant / child restraint system (CRS) / chest motion equation / injury risk

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HAN Yong1,2,3, TANG Huicong1,3, TIAN Fengyi2,3, HUANG Hongwu1,3, Mizuno Koji4. Chest motion equation and injury risk of a 3-year-old child under different constrained loads[J]. Journal of Vibration and Shock, 2020, 39(1): 216-222

References

[1] Global Status Report on Road Safety, World Health Organization 2009. 2015.
[2] National Highway Traffic Safety Administration.Traffic Safety Facts 2006[EB/OL].
https://crashstats.nhtsa.dot.gov/Api/Public/ViewPublication/810816.
[3] Lau I V,Horsch J D,Viano D C,et a1.Biomechanics of Liver-Injury by Steering Wheel Loading [J]. Journal of Trauma-Injury Infection and Critical Care, 1987, 27(3): 225-235.
[4] Patrick L M, Mertz H J, Kroell C K.Cadaver Knee Chest and Head Impact Loads [J].In: 1 lth Stapp car crash journal. New York, 1969, 168-182.
[5] 水野幸治, 韩勇. 汽车碰撞安全[M]. 北京:人民交通出版社股份有限公司, 2016.
Koji Mizuno, HAN Yong, CHEN Yiwei. Crash Safety of Passenger Vehicles [M]. China Communications Press, 2006.
[6] Koji Mizuno, Shogo Nezaki, Daisuke Ito. Comparison of chest injury measures of hybrid III dummy [J]. International Journal of Crashworthiness, 2017, 22(1): 38-48.
[7] KROELL C K，SCHNEIDER D C，NAHUM A M. Impact tolerance and response of the human thorax[C]// 15th Stapp Car Crash Conference，SAE Paper 710851， 1971：84-134.
[8] KROELL C K，SCHNEIDER D C，NAHUM A M. Impact tolerance and response of the human thorax II[C]// 18th Stapp Car Crash Conference，SAE Paper 741187，1974：282-457.
[9] Viano D C, Lau I V A Viscous Tolerance Criterion for Soft-Tissue Injury Assessment. Journal of Biomechanics [J], 1988, 21(5): 387-399.
[10] Lau I V, Viano D C. The Viscous Criterion-Bases and Applications of an Injury Severity Index for Soft Tissues [J]. 1986.
[11] 张金换, 许述财, 杨欣,等. 汽车儿童乘员碰撞伤害与防护[M]. 清华大学出版社.
Zhang Jinhuan, XU Shucai, Yang Xin, et al. Child Occupant Injury and Protection in Motor Vehicle Crashes [M]. Tsinghua University Press, 2015.
[12] Ouyang J, Zhao W D, Xu Y Q, et a1. Thoracic impact testing of pediatric cadaveric subjects [J].Journal of Trauma-Injury Infection and Critical Care, 2006, 61(6): 1492-1500.
[13] Maltese M R, Castner T, Niles D, et a1．Methods for determining pediatric thoracic force-deflection characteristics from cardiopulmonary resuscitation. Stapp car crashjournal, 2008, 52: 83-105.
[14] Yong Han, J Ouyang, K Mizuno et al. Chest Injuries to Child Occupants Seated in 5-Point Harness and Impact Shield CRSs based on Dummy Tests, FE Simulations and Animal Tests[C]// IRCOBI Conference Proceedings, Germany, 2016,339-349.
[15] Richard Kent, Francisco J. Lopez-Valdes, John Lamp, et al. Characterization of the Pediatric Chest and Abdomen using Three Post-Mortem Human Subjects. [C]. // 22nd International Technical Conference on the Enhanced Safety of Vehicles Conference, 2011:2055-2063.
[16] Viano DC, Lau IV.Thoracic Impact: A Viscous Tolerance Criterion [C]// SAE Technical Paper 856025, England: 1985, 104-114.
[17] LYU Wenle,RUAN Shijie,LI Haiyan,et al. Development and Validation of a 6-year-old Pedestrian Thorax and Abdomen Finite Element Model and Impact Injury Analysis [J]. International Journal of Vehicle Safety. 2015, 8(4): 339-356.
[18] Yamada H. Strength of biological materials [M]. Williams & Wilkins, 1970.
[19] GAYZIK F S. Development of a Finite Element Based Injury Metric for Pulmonary Contusion [D].Winston-Salem,North Carolina：Wake Forest University, 2008.
[20] 蒋彬辉, 邓淯方, 冒浩杰,等. 儿童胸部损伤准则的仿真研究[J]. 汽车工程, 2015(8): 897-903.
Jiang Binhui, Deng Yufang, Mao haojie, et al. Simulation Study on Pediatric Thoracic Injury Criteria [J]. Automotive Engineering, 2015(8): 897-903.
[21] 王方, 韩勇, 李桂兵,等. 基于有限元模拟的人体胸部材料参数对其碰撞响应影响分析[J]. 振动与冲击, 2016, 35(8):90-96.
Wang Feng, Han Yong, Li Guibing, et al Finite Elemet Analysis of Material Properties on Human Thoracic Impact Response [J]. Journal of Vibration and Shock, 2016, 35(8): 90-96.