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首页> 外文期刊>SAE international journal of transportation safety >Influence of the Upper Body of Pedestrians on Lower Limb Injuries and Effectiveness of the Upper Body Compensation Method of the FlexPLI
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Influence of the Upper Body of Pedestrians on Lower Limb Injuries and Effectiveness of the Upper Body Compensation Method of the FlexPLI

机译：行人的上身对下肢损伤的影响以及FlexPLI的上身补偿方法的有效性

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摘要

Current legform impact test methods using the FlexPLI have been developed to protect pedestrians from lower limb injuries in collisions with low-bumper vehicles. For this type of vehicles, the influence of the upper body on the bending load generated in the lower limb is compensated by setting the impact height of the FlexPLI 50 mm above that of pedestrians. However, neither the effectiveness of the compensation method of the FlexPLI nor the influence of the upper body on the bending load generated in the lower limb of a pedestrian has been clarified with high-bumper vehicles. In this study, therefore, two computer simulation analyses were conducted in order to analyze: (1) The influence of the upper body on the bending load generated in the lower limb of a pedestrian when impacted by high-bumper vehicles and (2) The effectiveness of the compensation method for the lack of the upper body by increasing impact height of the FlexPLI for high-bumper vehicles. The results show that the upper body significantly influenced the bending load generated in the lower limb of a pedestrian. This influence was found to be bumper height dependent. In addition, method of compensation for the lack of the upper body by increasing impact height of the FlexPLI was found not to work for high-bumper vehicles effectively. These results suggest the need to develop a new test method that appropriately incorporates upper body representation regardless of bumper height.
机译：目前已经开发出使用FlexPLI的腿形冲击试验方法，以保护行人在与低保险杠车辆相撞时免受下肢伤害。对于这种类型的车辆，通过将FlexPLI的冲击高度设置为比行人高50 mm，可以补偿上身对下肢产生的弯曲载荷的影响。但是，对于高保险杠的车辆，FlexPLI补偿方法的有效性以及上身对行人下肢产生的弯曲载荷的影响都还不清楚。因此，在本研究中，进行了两次计算机仿真分析，以分析：（1）上装车身对行人下肢在受到高保险杠车辆撞击时产生的弯曲载荷的影响;（2）通过增加高保险杠车辆的FlexPLI的冲击高度来弥补上半身不足的补偿方法的有效性。结果表明，上身显着影响了行人下肢产生的弯曲载荷。发现该影响取决于保险杠高度。此外，发现通过增加FlexPLI的冲击高度来补偿上半身不足的方法不适用于高保险杠车辆。这些结果表明需要开发一种新的测试方法，该方法应适当地结合上半身的代表，而不考虑保险杠的高度。

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