Investigation on Injury Protection Effectiveness of Active Seatback Reset Safety Strategy for Reclined Occupants

doi:10.3969/j.issn.1004-132X.2026.05.027

China Mechanical Engineering ›› 2026, Vol. 37 ›› Issue (5): 1262-1269.DOI: 10.3969/j.issn.1004-132X.2026.05.027

Investigation on Injury Protection Effectiveness of Active Seatback Reset Safety Strategy for Reclined Occupants

WANG Yanxin¹(), ZHAO Hongqian¹, LIU Chong²^,³, SU Jingjun¹, CUI Shihai¹, HE Lijuan¹, LYU Wenle¹, LI Haiyan¹()

^1.International Research Association on Emerging Automotive Safety Technology，Tianjin University of Science and Technology，Tianjin，300450
^2.Geely Automobile Research Institute （Ningbo） Co. ，Ltd. ，Ningbo，Zhejiang，315336
^3.Zhejiang Key Laboratory of Intelligent Vehicle Comprehensive Safety，Ningbo，Zhejiang，315336

Received:2025-05-06 Online:2026-05-25 Published:2026-06-09
Contact: LI Haiyan

座椅靠背主动复位安全策略对后倾坐姿乘员的损伤防护效果研究

王彦鑫¹(), 赵洪乾¹, 刘冲²^,³, 苏靖钧¹, 崔世海¹, 贺丽娟¹, 吕文乐¹, 李海岩¹()

^1.天津科技大学现代汽车安全技术国际联合研究中心, 天津, 300450
^2.吉利汽车研究院(宁波)有限公司, 宁波, 315336
^3.浙江省全省智能汽车全域安全重点实验室, 宁波, 315336

通讯作者: 李海岩
作者简介:王彦鑫，男，1995年生，博士研究生。研究方向为乘员损伤评估及防护。发表论文10余篇。E-mail：wangyx@mail.tust.edu.cn
李海岩^*（通信作者），女，1971年生，教授、博士研究生导师。研究方向为车辆安全与损伤生物力学，载运工具智能防护技术。发表论文100余篇。E-mail：lihaiyan@tust.edu.cn。
基金资助:
国家重点研发计划(2018YFC0807203);浙江省全省智能汽车全域安全重点实验室开放基金(ZKLIVCS-202406)

Abstract

Abstract:

To explore the effects of an active seatback reset safety strategy on the motion response， injury risk and potential hazards of reclined occupants， a comparative analysis was conducted to assess the differences in occupant motion response and injury risk without the safety strategy and those with the safety strategy implemented at different reset rates. The results show that the safety strategy has an impact on the motion response， injury risk and injury mechanism of the head-neck， chest-abdomen and lumbar-pelvic regions of reclined occupants. The safety strategy significantly improves lumbar-pelvic motion response and mitigates the risk of submarining and lumbar injuries. When the reset rate is as 2.585 rad/s， substantially reduces the overall injury risk of reclined occupants is reduced. However， when the reset rate is higher or lower than 2.585 rad/s， the injury risks of neck and abdomen is increased.

Key words: active safety, reclined occupant, occupant injury, frontal collision, active seatback reset

摘要：

为探究座椅靠背主动复位安全策略对后倾坐姿乘员运动响应、损伤风险以及潜在危险的影响，对比分析了未采用该安全策略时以及该安全策略采用不同复位速率时乘员运动响应和损伤指标的差异。研究结果表明，该安全策略对后倾坐姿乘员头颈部、胸腹部和腰椎-骨盆的运动响应、损伤风险和损伤机理存在影响。该安全策略可以显著改善腰椎-骨盆运动响应，降低乘员发生下潜和腰椎损伤的风险。当复位速率为2.585 rad/s时，可以降低后倾坐姿乘员整体损伤风险；当复位速率高于或低于2.585 rad/s时，将加剧乘员颈部和腹部损伤风险。

关键词: 主动安全, 后倾坐姿成员, 乘员损伤, 正面碰撞, 座椅靠背主动复位

CLC Number:

U491.6

WANG Yanxin, ZHAO Hongqian, LIU Chong, SU Jingjun, CUI Shihai, HE Lijuan, LYU Wenle, LI Haiyan. Investigation on Injury Protection Effectiveness of Active Seatback Reset Safety Strategy for Reclined Occupants[J]. China Mechanical Engineering, 2026, 37(5): 1262-1269.

王彦鑫, 赵洪乾, 刘冲, 苏靖钧, 崔世海, 贺丽娟, 吕文乐, 李海岩. 座椅靠背主动复位安全策略对后倾坐姿乘员的损伤防护效果研究[J]. 中国机械工程, 2026, 37(5): 1262-1269.

Figures/Tables 7

Fig.1 Simulation model and collision curve

Fig.2 Verification curve of the simulation model

Fig.3 Occupant movement trajectory

Tab.1 Head injury results in frontal collision

指标	阈值	Basics	Case1	Case2	Case3	Case4	Case5
V_HIC15	500	164	217	200	192	246	240
V_BrIC	1	0.56	0.69	0.81	0.77	0.69	0.77
P（AIS4+）		0.11	0.19	0.28	0.24	0.19	0.24
V_DAMAGE	0.42	0.25	0.41	0.51	0.45	0.41	0.35

Fig.4 Neck injury indexes

Tab.2 Thorax-abdominal injury results in frontal collision

指标	阈值^{［16，22-24］}	Basics	Case1	Case2	Case3	Case4	Case5
胸部压缩量/mm	22	23	26	25	22	22	22
胸部黏性指数/（m·s $- 1$ ）	0.50	0.17	0.23	0.22	0.22	0.22	0.22
心脏应变/%	35	13	22	18	15	16	17
肺部应变/%	30	26	37	32	30	29	30
肝脏应变/%	30	24	36	33	30	31	32
脾脏应变/%	30	20	29	30	34	35	37
肾脏应变/%	30	32	28	27	24	25	26
胃部应变/%	120	44	55	54	40	54	43
大肠应变/%	120	86	67	51	76	48	48
小肠应变/%	120	115	116	114	106	109	111

Tab.2 Thorax-abdominal injury results in frontal collision

指标	阈值^{［16，22-24］}	Basics	Case1	Case2	Case3	Case4	Case5
胸部压缩量/mm	22	23	26	25	22	22	22
胸部黏性指数/（m·s $- 1$ ）	0.50	0.17	0.23	0.22	0.22	0.22	0.22
心脏应变/%	35	13	22	18	15	16	17
肺部应变/%	30	26	37	32	30	29	30
肝脏应变/%	30	24	36	33	30	31	32
脾脏应变/%	30	20	29	30	34	35	37
肾脏应变/%	30	32	28	27	24	25	26
胃部应变/%	120	44	55	54	40	54	43
大肠应变/%	120	86	67	51	76	48	48
小肠应变/%	120	115	116	114	106	109	111

Fig.5 Lumbar spine-pelvis injury parameters

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Investigation on Injury Protection Effectiveness of Active Seatback Reset Safety Strategy for Reclined Occupants

座椅靠背主动复位安全策略对后倾坐姿乘员的损伤防护效果研究

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References 25

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