摘要
为探究正面碰撞中后倾姿态及体型差异对胸部及胸腰椎(T11—L5)损伤的影响,该文基于整车正面100%重叠刚性壁障碰撞模型,采用第5百分位女性(5 F)、第50(50 M)及第95百分位男性(95 M)人体有限元模型THUMS,对比了标准与后倾姿态下乘员的运动学响应与损伤风险。结果表明:后倾姿态会普遍加剧损伤风险,且损伤模式呈现显著的体型特异性。在后倾姿态下,5 F胸部损伤风险最为突出,其肺部压力高达1230 kPa,肋骨最大主应变达4%;50 M与95 M的损伤风险则集中于胸腰椎,其中50 M的腰椎L2轴向力与前向弯矩峰值分别超损伤阈值44%、129%,95 M的腰椎L1轴向力超阈值38%,L5前向弯矩峰值超阈值111%;胸腰椎横向弯矩随体型增大而增加。
A full-vehicle frontal 100%overlap rigid barrier crash model was established to investigate the impact of anthropometric differences on occupant thoracic and thoracolumbar spine(T11—L5)injuries in reclined posture.The kinematic and injury responses of occupants in standard and reclined postures were compared,using the human finite element models THUMS(total human model for safety)of the 5th percentile female(5 F),50th percentile male(50 M),and 95th percentile male(95 M).The results show that the reclined posture generally increases injury risk with injury patterns exhibiting significant body size specificity.Under the reclined posture,the 5 F exhibites the most pronounced thoracic injury risk,with lung pressure reaching 1230 kPa and maximum principal rib strain reaching 4%.Injury risks for the 50 M and 95 M are concentrated in the thoracolumbar spine,the peak axial force and flexion moment at L2 of the 50 M exceeds the thresholds by 44% and 129%,respectively;the peak axial force at L1 of the 95 M exceeds the threshold by 38%,and the peak flexion moment at L5 exceeds the threshold by 111%.Moreover,the lateral bending moment of the thoracolumbar spine increases with larger body size.
作者
黄志山
潘迪
韩勇
肖宗瀚
刘慧
覃帧员
HUANG Zhishan;PAN Di;HAN Yong;XIAO Zonghan;LIU Hui;QIN Zhenyuan(School of Mechanical and Automotive Engineering,Xiamen 361024,China;Fujian Key Laboratory of Advanced Design and Manufacturing of Buses,Xiamen 361024,China;China Merchants testing Vehicle Technology Research Institute,Chongqing 401329,China)
出处
《汽车安全与节能学报》
北大核心
2026年第1期50-58,共9页
Journal of Automotive Safety and Energy
基金
福建省自然科学基金重点项目(2024J02031)
厦门理工学院高层次人才项目(YKJ23014R)
国家自然科学基金面上项目(5257120551)
国家外国专家项目(H20250208)。
关键词
正面碰撞
人体有限元模型THUMS
后倾姿态
体型差异
损伤风险
frontal collision
total human model for safety(THUMS)
reclined postures
anthropometric differences
injury risk
