汽车侧面碰撞乘员骨盆生物力学模型建立及分析  

Development and analysis of a biomechanical model of occupant pelvis in automobile side impact

作　　者：陈吉清[1,2] 马正伟[1,2] 兰凤崇[1,2] 杜天亚 

机构地区：[1]华南理工大学机械与汽车工程学院,广州510640 [2]广东省汽车工程重点实验室,广州510640

出　　处：《吉林大学学报（工学版）》2014年第6期1571-1577,共7页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家科技支撑计划项目(2011BAG03B02);浙江省汽车安全控制技术重点实验室开放基金项目(2011E10002)

摘　　要：为了研究碰撞过程中骨盆的生物力学响应和损伤机理,构建了一个基于50百分位中国男性CT影像的骨盆三维有限元模型。模型采用Guillemot实验和Salzar实验进行仿生可靠性验证,并比较了皮质骨分别采用六面体单元和壳单元模拟时模型的准确性。结果表明:两者均能有效地预测骨盆的碰撞响应和损伤,但皮质骨采用六面体单元模拟时,与试验结果具有更好的一致性。此外,通过与同等条件下女性骨盆碰撞仿真及试验结果的对比分析,发现男女骨盆由于几何形状以及外部尺寸差异,导致两者在碰撞条件下抵抗变形的能力不同。In order to study the biomechanical response and injury mechanisms of the occupant pelvis during impact, a three-dimensional finite element model of the pelvis based the CT data of a 50th percentile Chinese male was developed. Then the experimental methods used by Guillemot et al. and Salzar et al. were adopted to validate the biofidelity of the model; the accuracy of the model was examined by simulation of cortical bone with hexahedral elements and simulation of trahecular bone with shell elements. Simulation results indicate that both mesh methods can be applied to simulate the pelvis impact responses and injuries, however, the results of the model with cortical bone meshed by hexahedral elements are more consistent with that of experiments. Moreover, the comparative analysis of simulation results with female pelvis under the same conditions reveals that geometrical differences between male and female pelvises affect their deformation resistant capacities in impact.

关 键 词：车辆工程 侧面碰撞 骨盆 有限元模型 仿生可靠性 损伤 

分 类 号：U461.91[机械工程—车辆工程]