Abstract: Side impact is one of the common daily traffic accidents. To achieve more comprehensive side impact protection systems, the 2024 version of the China new car assessment program has introduced new remote virtual assessment content and set requirements for the accuracy of simulation correlation for a single remote occupant. Based on a specific vehicle model, this paper addresses the issue of insufficient correlation accuracy of the neck Mx of the remote single occupant Sid-IIs 5th percentile female dummy. A simplified mechanical analysis of the dummy's neck is conducted, identifying influencing factors such as the retained length of the seat tear seam, friction between the airbag and the seat, density of the seat cushion foam, friction between the dummy and the seat, friction between the dummy and the seatbelt, and the computational environment and settings. Using a single-variable method, the impact of these parameters on the correlation accuracy of the neck Mx of the Sid-IIs 5th percentile female dummy for remote occupant protection in the given vehicle model is analyzed. Through parameter optimization, the correlation accuracy of the neck Mx is improved to 0.638, providing engineering guidance for future remote virtual assessment simulation correlation.

Key words: remote occupant protection; virtual assessment; Sid-IIs 5th

摘要： 侧面碰撞是常见的日常交通事故之一，为了更全面的侧面约束系统保护，2024 版中国 新车评价规程新增了远端虚拟测评内容，并对远端单乘员仿真对标精度提出了要求。文章基 于某款车型，针对远端单乘员 Sid-IIs 5th 假人颈部 Mx 对标精度不足的问题进行了假人颈部力 学简化分析，初步确定了座椅撕裂线保留长度、气囊与座椅摩擦、座椅坐垫泡沫密度、假人 与座椅摩擦、假人与安全带摩擦、计算环境及设置等影响因子，使用单一变量方法分析了该 车型远端保护单乘员 Sid-IIs 5th 假人颈部 Mx 对标精度参数影响，最终通过参数优化使颈部 Mx 对标精度提升至 0.638，为后续远端虚拟测评仿真对标提供工程化指导。

关键词: 远端乘员保护；虚拟测评；Sid-IIs 5th