侧向撞击时肩部有限元分析  

Finite Element Analysis of Shoulder Under Lateral Impact Loading

作　　者：张晶 郭媛[1] 张绪树[1] 张玉文 ZHANG Jing;GUO Yuan;ZHANG Xush;ZHANG Yuwen(Institute of Applied Mechanics and Biomedical Engineering,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原理工大学应用力学与生物医学工程研究所,太原030024

出　　处：《太原理工大学学报》2018年第6期886-892,共7页Journal of Taiyuan University of Technology

基　　金：国家自然科学基金资助项目(11472185;11772214)

摘　　要：针对现实生活中易发的肩部侧向撞击损伤,探讨肩部在3.5m/s侧向撞击下的力学响应,根据应力分布对损伤易发部位进行预测。基于逆向工程原理,构建了包括骨骼、韧带、软骨、肌肉等组织的人体肩关节有限元模型;在保证计算时间的情况下,尽量增加网格的数量,保证结果的精度和准确性。施加静态横向载荷,给出位移变化情况,通过与前人实验数据对比,验证了模型的有效性。结果表明,所建模型静载位移跟尸体实验数据趋势基本吻合,侧向撞击中Von Mises应力峰值为70.12MPa,损伤可能性按照肩胛颈、肱骨头、肱骨颈、锁骨下表面的顺序依次降低,在肩部侧向碰撞的预防和救治中要首先考虑这些位置的损伤并做好相应的保护固定措施。In order to deal with the shoulder lateral impact damage that is prone to occur in real life,the mechanical response of the shoulder under lateral impact of 3.5 m/s was discussed,and the vulnerable parts were predicted according to the stress distribution.On the basis of the principle of reverse engineering,a finite element model of human shoulder joint including bone,ligaments,cartilage,muscle and other tissues was constructed by using commercial software.When calculation time was ensured,the number of grids was increased as much as possible to ensure the precision and accuracy of the results.The changes of displacement were given through static lateral loading.By comparing with previous experimental data,the validity of the model was verified.The results show that the static displacement of the model was basically consistent with the experimental data of corpse.The peak value of the Von Mises stress in lateral impact was 70.12 MPa.The descending order of injury probability was scapular neck,humeral head,humeral neck and subclavian surface.In the prevention and treatment of shoulder lateral collision,the damage of these positions should be considered firstly and the corresponding protection and fixing measures should be taken accordingly.

关 键 词：生物力学 有限元分析 肩部 侧向碰撞 损伤 

分 类 号：R318.01[医药卫生—生物医学工程]