中国50百分位男性小腿有限元模型的建立与验证  

Development and Validation of the Lower Leg FE Model for the 50th Percentile Chinese Male

作　　者：曹立波[1] 杜现平[1] 张冠军[1] 胡跃群[2] 张恺[1] 

机构地区：[1]湖南大学,汽车车身先进设计制造国家重点实验室,长沙410082 [2]中南大学湘雅三医院放射科,长沙410013

出　　处：《汽车工程》2015年第11期1291-1297,1319,共8页Automotive Engineering

基　　金：国家自然科学基金(51205118);湖南大学汽车车身先进设计制造国家重点实验室自主研究课题(51275001)资助

摘　　要：基于下肢螺旋CT扫描,保留主要的解剖学结构,建立了中国50百分位男性小腿有限元模型。应用中国人体测量学数据进行模型缩放,对皮质骨厚度进行精确的模拟。基于Ls-Dyna材料模型模拟皮质骨拉、压特性和应变率特性。对模型进行小腿的准静态轴向压缩验证以及胫骨、腓骨与小腿的准静态三点弯曲验证和近心端1/3、中部和远心端1/3的动态三点弯曲验证。验证结果显示:仿真验证曲线与试验曲线走势吻合较好,峰值力大小与出现时刻基本一致,表明所建立的模型生物逼真度较高。Based on the spiral CT scan of lower limbs with major anatomical structures reserved, a lower leg FE model for the Chinese 50th percentile male is established. Model scaling is conducted based on the anthropome-try for Chinese with cortical bone thickness accurately simulated, and the tension, compression and strain character-istics of cortical bones are simulated by the material model in LS-DYNA. Then the quasi-static axial compression verification for lower leg and the quasi-static three-point-bending verifications （ including proximal 1/3 , middle and distal 1/3） for tibia, fibula and lower leg are performed on the model. The results indicate that the trends of simula-tion verification curves agree well with that of test curves, with the magnitudes and appearing moments of peak forces basically coincided, demonstrating the high biofidelity of the model built.

关 键 词：小腿损伤 有限元模型 验证 

分 类 号：U467.14[机械工程—车辆工程]