Protective effect of mechanical massage car seat on occupant injury in rear-end collision

doi:10.3969/j.issn.1674-8484.2025.04.004

Abstract

Abstract:

To evaluate the potential injury risks of mechanical massage seats during vehicle rear-end collisions, this study employed the Hybrid III 50th percentile male dummy model to conduct comparative crash simulations between conventional automotive seats and mechanical mas-sage seats, with particular focus on analyzing occupant injuries to the head, neck, chest, and lumbar spine. The results showed that when using the 3ms resultant acceleration as the chest injury criterion, the values for mechanical massage seats and conventional seats are 26.6 g and 27.7 g, respectively, both meeting requirements; for the normalized neck injury criterion (N_ij), conventional seat occupants exceedes the threshold of 1, indicating significant injury risk, while mechanical massage seat occupants demonstrates excellent performance across all neck injury metrics with an N_ij value of 0.51, providing better protection; mechanical massage seats show greater advantages in reducing head injury risk, with lower HIC values for occupants; regarding lumbar injuries, the maximum force on conventional seat occupants is 1 670 N compared to 1 800 N for mechanical massage seat occupants, with the maximum LIC values being 4.32 and 3.67, respectively, both meeting safety standards and ensuring passenger safety. This research verifies the safety and reliability of mechanical massage seats in rear-end collisions, providing important reference value for future development and widespread application of mechanical massage seats.

Key words: automobile safety, rear-end collision, mechanical massage seat, occupant injury, injury evaluation

CLC Number:

U461.91

ZHU Huiting, MOU Yanyan, LAN Yang, XIANG Lei, YANG Jie, CHENG Zhihua, WANG Junliang, YANG Na. Protective effect of mechanical massage car seat on occupant injury in rear-end collision[J]. Journal of Automotive Safety and Energy, 2025, 16(4): 539-547.

Figures/Tables 11

References 31

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评价指标	Case1	Case2	损伤阈值
评价指标	Case1	Case2	高性能	低性能	极限值
上颈部F_x / kN	0.56	0.19	1.2	1.95	2.7
下颈部F_x / kN	1.43	0.99	1.2	1.95	2.7
上颈部F_z / kN	3.05	1.39	1.7	2.62	2.9
下颈部F_z / kN	2.99	1.40	1.7	2.62	2.9
上颈部M_y / Nm	59.68	25.06	36.0	49.00	57.0
下颈部M_y / Nm	39.11	20.51	36.0	49.00	57.0
N_ij	1.10	0.51	1.00

评价指标	Case1	Case2	损伤阈值
评价指标	Case1	Case2	高性能	低性能	极限值
上颈部F_x / kN	0.56	0.19	1.2	1.95	2.7
下颈部F_x / kN	1.43	0.99	1.2	1.95	2.7
上颈部F_z / kN	3.05	1.39	1.7	2.62	2.9
下颈部F_z / kN	2.99	1.40	1.7	2.62	2.9
上颈部M_y / Nm	59.68	25.06	36.0	49.00	57.0
下颈部M_y / Nm	39.11	20.51	36.0	49.00	57.0
N_ij	1.10	0.51	1.00