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.
出处
《汽车工程》
EI
CSCD
北大核心
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
