肌肉生物仿真度对六岁儿童胸部碰撞生物力学响应的影响

由于可用于实验的儿童尸体的缺乏，采用具有较高生物仿真度的胸部有限元模型是研究儿童胸部损伤机理的重要手段。在已验证有效性的6岁儿童胸部有限元模型基础上构建了等效肌肉模型和具有真实几何形状的肌肉模型，通过重构儿童胸部正碰尸体实验分析肌肉生物仿真度对胸部损伤的影响。对比实验结果表明，等效肌肉模型的胸部接触力、胸部最大压缩量和肋骨最大范梅塞斯应力稍大于真实肌肉模型；心脏和肺的最大主应变都略小于真实肌肉模型；真实肌肉模型曲线与尸体实验通道的相关性要大于等效肌肉模型。通过以上对比，本文研究结果认为具有真实几何形状肌肉的儿童胸部有限元模型应该能更准确地反映胸部受到碰撞时的生物力学响应。...

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Published in:	Sheng wu yi xue gong cheng xue za zhi Vol. 34; no. 1; pp. 41 - 47
Main Author:	崔世海单蕾蕾李海岩吕文乐贺丽娟阮世捷
Format:	Journal Article
Language:	Chinese English
Published:	中国四川四川大学华西医院 25-02-2017
Subjects:	儿童胸部有限元模型内脏损伤生物力学响应肌肉生物仿真度胸部碰撞论著
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Summary:	由于可用于实验的儿童尸体的缺乏，采用具有较高生物仿真度的胸部有限元模型是研究儿童胸部损伤机理的重要手段。在已验证有效性的6岁儿童胸部有限元模型基础上构建了等效肌肉模型和具有真实几何形状的肌肉模型，通过重构儿童胸部正碰尸体实验分析肌肉生物仿真度对胸部损伤的影响。对比实验结果表明，等效肌肉模型的胸部接触力、胸部最大压缩量和肋骨最大范梅塞斯应力稍大于真实肌肉模型；心脏和肺的最大主应变都略小于真实肌肉模型；真实肌肉模型曲线与尸体实验通道的相关性要大于等效肌肉模型。通过以上对比，本文研究结果认为具有真实几何形状肌肉的儿童胸部有限元模型应该能更准确地反映胸部受到碰撞时的生物力学响应。
Bibliography:	pediatric thorax finite element model; thorax impact; muscle biofidelity; biomechanical response;internal organ injury CUI Shihai1,2, SHAN Leilei1, LI Haiyan1,2, LU Wenle1,2, HE Lijuan1,2, RUAN Shijie1 （1. College of Mechanical Engineering, Tianfin University of Science and Technology, Tianjin 300222, P.R. China 2. Tianjin Key Laboratory of Integrated Design and On-line Monitoring for Light Industry ＆ Food Machinery and Equipment, Tianjin 300222, P.R. China） 51-1258/R Finite element （FE） model of thorax with high biofidelity is one of the most important methods to investigate thoracic injury mechanism because of the absence of pediatric cadaver experiments. Based on the validated thorax finite element model, the FE models with equivalent muscles and real geometric muscles were developed respectively, and the effect of muscle biofidelity on thoracic injury was analyzed with reconstructing pediatric cadaver thorax impact experiments. The simulation results showed that the thoracic impact force, the maximum displac
ISSN:	1001-5515
DOI:	10.7507/1001-5515.201606045