【摘要】 为探究中国乘员在汽车正面碰撞中的损伤响应,基于中国人体尺寸和现有混Ⅲ 50百分位假人有限元模型,采用全体段缩放方法建立了符合中国人体尺寸特征的中国人50百分位男性假人有限元模型。采用LS-DYNA建立并验证了某量产车型的驾驶员侧约束系统模型,对比分析了中国人50百分位男性假人与混Ⅲ 50百分位假人在同一正面碰撞工况下的损伤响应,并研究了安全气囊的起爆时间、排气孔直径和气体质量流率3个参数对两种假人的损伤影响。结果表明,与混Ⅲ 50百分位男性假人相比,中国50百分位男性假人的头部损伤风险较大,而胸部损伤可能较小;对于混Ⅲ 50百分位男性假人是最优的安全气囊参数未必能给对应的中国假人提供最优的保护,部分安全气囊参数对两种假人损伤的影响趋势甚至是相反的。更多还原

【Abstract】 In order to investigate the injury responses of Chinese occupants in vehicle frontal crash, the FE model for Chinese 50 th-percentile male dummy conforming to Chinese anthropometric features is developed by scaling all body segments based on Chinese anthropometric data and the current FE model for Hybrid Ⅲ 50 th-percentile dummy. The model for the driver restraint system of a production car is established and validated with LS-DYNA, the injury responses of Chinese 50 th-percentile male dummy and Hybrid Ⅲ 50 th-percentile dummy under the same frontal crash condition are contrastively analyzed, and the effects of the ignition time, vent diameter and gas mass flow rate of airbag on the injury responses of these two dummies are studied. The results show that compared with Hybrid Ⅲ 50 th-percentile dummy, the Chinese 50 th-percentile male dummy has higher risk of head injury and may have a lower risk of thorax injury. The optimum airbag parameters for Hybrid Ⅲ 50 th-percentile dummy can’t necessarily provide best protection for Chinese 50 th-percentile male dummy and the influence tendencies of some airbag parameters for these two dummies may even be just the opposite.更多还原