基于数值生物力学模型的汽车正面碰撞中肥胖驾驶员头颈部损伤研究

以THUMS男性50百分位有限元模型为研究对象,使用Hypermesh软件中的Hypermorph功能对THUMS男性50百分位有限元模型进行网格变形,得到一系列不同BMI的肥胖有限元模型.建立了汽车正面100％重叠率碰撞仿真模型,对比了肥胖乘员与非肥胖乘员头、颈部的损伤差异.研究表明,头部损伤部分,BMI并未对HIC...

Research on Head and Neck Injuries of Obese Driversin Frontal Car Crashes Based on Numerical Biomechanics Model

In this paper, the finite element model of the THUMS 50th percentile male is re-meshed to obtain a series of obese finite element models with different BMI.This article established a simulation model with the frontal collision overlap rate of 100%, and then the injuries in head and neck were compared between the obese and non-obese drivers.The results show that for the head injury, the BMI does not have a significant impact on HIC 36 . However, another head injury indicator CSDM 0.15 used in this article shows a positive correlation with the BMI, which indicates that the obese male drivers are at greater risk for head injuries than non-obese male drivers.For the neck injury, the elongation rate of the cervical ligamentum flavum, the interspinous ligament and the anterior longitudinal ligament increase with BMI. And for both the non-obeseand obese drivers, the three types of ligaments have the maximum elongation in the same area. As the level of obesity increases, the location of the neck injury does not change significantly and the risk of neck injury remains the same.