Occupant restraint systems (ORS) play an integral and critical role in protecting occupant safety. However, research on optimising ORS in reclined postures in autonomous vehicles is still insufficient. This study aimed to conduct multiobjective optimisation of the ORS to explore potential occupant injury reduction capability. Firstly, the MADYMO simulation method quantitatively correlates the relevant parameters of the ORS with occupant injuries. Then, parameters that significantly impact the safety performance of the ORS (pretensioning time, pretensioning force, webbing stiffness, seatbelt limiter force, and explosive pretensioning time) were selected as design variables. The occupant's comprehensive injury evaluation criterion, WIC, was used as the optimisation criteria. The ORS parameters were optimised by combining the Latin hypercube experimental design, the Kriging surrogate model, and the NSGA-II optimisation algorithm. The results show that after optimisation, the occupant's head injury criteria (Chead) decreased by 10.87%, neck injury criteria (Cneck) decreased by 14.18%, chest injury criteria (Cchest) decreased by 8.43%, lumbar spine injury criteria (Clumbar) decreased by 2.37%, and the comprehensive weighted injury criterion (WIC) decreased by 8.14%. This study significantly reduced injuries to various parts of the occupant, thereby improving the safety of occupants in reclined postures.

Zhanyu Wang

Wei Zhao

Xuejing Du

Yamin Shen

Wenhua Ding

International Journal of Crashworthiness

INTERNATIONAL JOURNAL OF CRASHWORTHINESS 是唯一涵盖与道路车辆（包括汽车、卡车、公共汽车和摩托车）、轨道车辆、航空和航天器、船舶和潜艇以及陆上和海上设施的耐撞性有关的所有问题的期刊。该杂志为发表与学者、设计师和实践工程师相关的原创研究和应用研究提供了一个独特的论坛。 INTERNATIONAL JOURNAL OF CRASHWORTHINESS 发表原创研究论文（全文和简短的通讯）和最先进的评论。INTERNATIONAL JOURNAL OF CRASHWORTHINESS 欢迎有关材料响应质量、车身结构和能量吸收系统的论文在承受突然的动态载荷的情况下，论文集中于新的耐撞结构、约束系统的新概念和现实的事故重建。

The International Journal of Crashworthiness is the only journal that covers all aspects of crashworthiness related to road vehicles (including cars, trucks, buses, and motorcycles), rail vehicles, aircraft and spacecraft, ships and submarines, as well as land and marine facilities. This journal provides a unique forum for publishing original research and applied studies relevant to scholars, designers, and practicing engineers. The journal welcomes original research papers (both full-length and short communications) and cutting-edge reviews. We invite submissions on material response quality, vehicle body structures, and energy absorption systems under sudden dynamic loads, particularly focusing on new crashworthy structures, innovative concepts for restraint systems, and realistic accident reconstructions.

《International Journal of Crashworthiness》是唯一涵盖与道路车辆（包括汽车、卡车、公共汽车和摩托车）、轨道车辆、航空和航天器、船舶和潜艇以及陆上和海上设施的耐撞性相关的所有问题的期刊。该杂志为学者、设计师和工程师提供了一个独特的论坛，发表原创研究和应用研究。期刊接受原创研究论文（包括全文和简短通讯）以及前沿评论。我们欢迎关于材料响应质量、车身结构和能量吸收系统在承受突发动态载荷情况下的研究，特别是集中于新型耐撞结构、约束系统的新概念和实际事故重建的论文。

Category	Quartile
工程技术	4
工程技术, 工程制造	4
工程技术, 工程机械	4

Optimisation of Occupant Restraint Systems for Autonomous Vehicles in Reclined Postures

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Journal Info

Category	Quartile
ENGINEERING, MECHANICAL	3