救生伞背带参数对假人动载的影响研究

针对救生伞假人高速开伞空投试验，建立降落伞-背带-假人系统的动力学模型，分析背带及脱离锁参数对假人质心过载的影响。在合理简化的基础上，采用多体动力学方法建立降落伞、背带脱离锁和假人的十五自由度动力学模型；采用质量-阻尼弹簧模型建立背带模型，连接降落伞、脱离锁和假人；利用实测过载计算降落伞开伞力。利用所建立的动力学模型仿真典型状态下假人和背带的动力学响应，验证所建立模型的合理性。分析脱离锁位置、背带松紧程度、背带材料特性对假人质心最大过载的影响，用于指导背带设计以及确定最佳的背带脱离锁位置。

Dynamic Load of Dummy for the Webbing Parameter of Parachute

The dynamic model of parachute-webbing-dummy system is developed for the airdrop test of dummy in the high speed, and then the load of the centre of mass of dummy is analyzed for the varied parameters of webbing and detachment lock. Based on rational simplification, fifteen degree of freedom dynamic model for the parachute, detachment lock and dummy is developed by using the multibody dynamic method. The webbing is modelled by semi-mass-damping model to join the parachute, detachment lock and dummy. The parachute opening force is calculate by using the load of test. The dynamic process of dummy and the webbing for the typical condition is simulated by using the proposed model, and the reasonableness of the model is verified. The effect of the load of the dummy mass center is analyzed for the position of detachment lock, the length of webbing, and the property of the webbing material. The results of the analysis could be used for the design of the webbing and the determination of the position of the detachment lock.