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首页> 外文期刊>Annals of Biomedical Engineering: The Journal of the Biomedical Engineering Society >Validation of Shoulder Response of Human Body Finite-Element Model (GHBMC) Under Whole Body Lateral Impact Condition
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Validation of Shoulder Response of Human Body Finite-Element Model (GHBMC) Under Whole Body Lateral Impact Condition

机译：人体横向碰撞条件下人体有限元模型（GHBMC）肩部响应的验证

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摘要

In previous shoulder impact studies, the 50th-percentile male GHBMC human body finite-element model was shown to have good biofidelity regarding impact force, but under-predicted shoulder deflection by 80% compared to those observed in the experiment. The goal of this study was to validate the response of the GHBMC M50 model by focusing on three-dimensional shoulder kinematics under a whole-body lateral impact condition. Five modifications, focused on material properties and modeling techniques, were introduced into the model and a supplementary sensitivity analysis was done to determine the influence of each modification to the biomechanical response of the body. The modified model predicted substantially improved shoulder response and peak shoulder deflection within 10% of the observed experimental data, and showed good correlation in the scapula kinematics on sagittal and transverse planes. The improvement in the biofidelity of the shoulder region was mainly due to the modifications of material properties of muscle, the acromioclavicular joint, and the attachment region between the pectoralis major and ribs. Predictions of rib fracture and chest deflection were also improved because of these modifications.
机译：在先前的肩部撞击研究中，第50个百分位的男性GHBMC人体有限元模型显示出在撞击力方面具有良好的生物保真度，但与实验中观察到的相比，肩部挠度低估了80％。这项研究的目的是通过关注全身横向撞击条件下的三维肩部运动学来验证GHBMC M50模型的响应。对模型进行了五种修改，重点是材料特性和建模技术，并进行了补充灵敏度分析，以确定每种修改对人体生物力学响应的影响。修改后的模型预测，在观测到的实验数据的10％范围内，肩部反应和肩部最大挠度将得到显着改善，并且在矢状和横断面的肩cap骨运动学中显示出良好的相关性。肩部区域的生物保真度的改善主要归因于肌肉，肩锁关节以及胸大肌与肋骨之间的附着区域的材料特性的改变。由于这些修改，对肋骨骨折和胸部偏斜的预测也得到了改善。

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