6岁儿童骨盆有限元模型的构建和验证.pdf

第 7 卷 第 2 期 汽车工程学报 Vol.7 No.2 100 汽车工程学报 第 卷 2017 年 3 月 Chinese Journal of Automotive Engineering M ar. 20177 6 岁儿童骨盆有限元模型的构建和验证 李海岩，崔振宇，崔世海，阮世捷，贺丽娟 300222 （天津科技大学 机械工程学院，天津 ） 摘　要 ：采用儿童骨盆有限元模型是预测汽车侧面碰撞时儿童骨盆生物力学响应的重要方法。基于 6 岁儿童 CT 图像构 建了含有真实肌肉形状的 6 岁儿童骨盆有限元模型，利用该模型重构了儿童尸体骨盆侧面碰撞试验，仿真计算得到的力 位移曲线位于尸体试验数据通道内，吻合较好。仿真得到的粘性指数 VC 值曲线与 6 岁儿童尸体试验曲线趋势一致，说 明了该模型的有效性。进一步研究了不同厚度缓冲材料对骨盆损伤的影响，发现缓冲材料确实能有效降低骨盆的损伤概 率。所构建的模型具有较高的生物仿真度，可为儿童骨盆碰撞损伤的仿真研究提供可靠的工具。 关键词：6 岁儿童；骨盆有限元模型；模型验证；缓冲材料；骨盆损伤 R318.01 A DOI 10.3969/j.issn.2095 1469.2017.02.04 中图分类号： 文献标识码： ： - Development and Validation of a Finite Element model for a 6-year-old Child pelvis LI Haiyan，CUI Zhenyu，CUI Shihai，RUAN Shijie ，HE Lijuan （College of Mechanical Engineering，Tianjin University of Science and Technology ，Tianjin 300222，China ） Abstract：The finite element (FE) model is a good tool to predict the pelvis biomechanical responses and injuries under lateral impacts. The FE model of a 6-year-old child pelvis with the real anatomical structure of muscles was developed based on CT images. The cadaver pelvic side impact experiments were reconstructed using the developed FE pelvic model. The force-displacement curve obtained from the simulations was consistent with the data obtained from cadaver experiments.The VC curve obtained from the simulations was also in good agreement with the experimental curve. All those results provided t