HⅢ 5th女性假人的下潜机理及防下潜方案

摘要

The submarining mechanism for a HⅢ 5th rear female dummy was analyzed and some anti-submarining plans were put forward to meet the requirements of rear female occupant submarining in C-NCAP (China-New Car Assessment Program) implemented on July 1, 2015. The dummy movement was simpliifed and the equal condition in which relative slippage did not occur between lap belt and dummy abdomen during crash was obtained. Some anti-submarining plans were brought out considering one real-world vehicle situation, aiming at dummy abdomen obliquity and the angle between lap belt acting force direction and horizontal level respectively. 10 plans were validated through the MADYMO software. 4 plans were applied to the real-world vehicle validation tests. The results show that the iliac unloading rate is less than 1 kN/ms. Therefore, the anti-submarining plans are effective because no submarining happened according to the C-NCAP (2015).%为了满足2015-07-01施行的中国新车评价规程(C-NCAP)中防止后排女性乘员下潜要求，分析了后排HⅢ5th女性假人下潜力学机理，并提出了若干防下潜设计方案。简化后排HⅢ5th女性假人运动模型，建立腰带与假人不发生相对滑动的等价条件。针对某车型的实际情况，对假人腹部倾斜角与安全带腰带作用力方向夹角的影响因素，提出了多种防下潜方案。用MADYMO软件，仿真验证了10种方案。实车验证了4种方案。结果显示：假人的髂骨力卸载率小于1 kN/ms。因此，按2015版C-NCAP判定为该方案无下潜发生，防下潜方案有效。