【摘要】 建立了基于多刚体动力学MADYMO软件的儿童乘员约束系统台车碰撞系统的仿真模型,包括儿童座椅增高垫、成人安全带系统、后排座椅、6岁儿童假人,研究了成人安全带系统的限力器和预紧器的相关参数对儿童乘员碰撞响应和损伤值的影响.结果表明:卷收器预紧器可有效减小儿童乘员伤害值,同时减小儿童乘员的下潜风险;而锚点预紧器会增大儿童乘员的下潜风险,锚点预紧器与安全带单向锁止器配合使用可降低儿童乘员的下潜风险;广泛用于降低成年人碰撞伤害的4.0kN卷收器式限力器在本研究中被证实对于儿童乘员没有明显的保护效果,减小成人安全带限力值可对儿童起到较好保护作用.更多还原

【Abstract】 In this paper,a trolley-crash simulation model of child restraint system,which includes a booster seat,an adult seatbelt system,a vehicle rear seat and a child dummy model,is established based on the multi-rigid-body dynamics software MADYMO.Then,the effects of load limiter and pretensioner of the adult seatbelt system on the impact response and the injury value of child occupant are investigated.The results indicate that the retractor pretensioner effectively reduces the injury value and the submarining risk of child occupant,while an anchor pretensioner alone may increase the submarining tendency,but an anchor pretensioner combined with an one-way locking tongue can reduce the submarining tendency,that the 4.0 kN retractor-type load limiter widely applied in adult injury reduction has no obvious effect on the protection of child occupant,and a lower load level of the adult load limiter provides the best protection for child occupant.更多还原