Center For Applied Biomechanics, University of Virginia, USA.
Center For Applied Biomechanics, University of Virginia, USA.
J Biomech. 2014 Aug 22;47(11):2563-70. doi: 10.1016/j.jbiomech.2014.06.004. Epub 2014 Jun 11.
Clavicle injuries were frequently observed in automotive side and frontal crashes. Finite element (FE) models have been developed to understand the injury mechanism, although no clavicle loading response corridors yet exist in the literature to ensure the model response biofidelity. Moreover, the typically developed structural level (e.g., force-deflection) response corridors were shown to be insufficient for verifying the injury prediction capacity of FE model, which usually is based on strain related injury criteria. Therefore, the purpose of this study is to develop both the structural (force vs deflection) and material level (strain vs force) clavicle response corridors for validating FE models for injury risk modeling. 20 Clavicles were loaded to failure under loading conditions representative of side and frontal crashes respectively, half of which in axial compression, and the other half in three point bending. Both structural and material response corridors were developed for each loading condition. FE model that can accurately predict structural response and strain level provides a more useful tool in injury risk modeling and prediction. The corridor development method in this study could also be extended to develop corridors for other components of the human body.
锁骨损伤在汽车侧面和正面碰撞中经常观察到。已经开发了有限元 (FE) 模型来了解损伤机制，尽管文献中尚未存在锁骨加载响应通道来确保模型响应的真实性。此外，通常开发的结构水平（例如，力-挠度）响应通道不足以验证 FE 模型的损伤预测能力，FE 模型通常基于与应变相关的损伤标准。因此，本研究的目的是开发结构（力与挠度）和材料水平（应变与力）的锁骨响应通道，以验证用于损伤风险建模的 FE 模型。20 根锁骨分别在代表侧面和正面碰撞的加载条件下失效，其中一半在轴向压缩下，另一半在三点弯曲下。为每种加载条件都开发了结构和材料响应通道。能够准确预测结构响应和应变水平的 FE 模型为损伤风险建模和预测提供了更有用的工具。本研究中的通道开发方法也可以扩展到开发人体其他部件的通道。
