小腿肢体残端的三维有限元应力分析

通过建立三维线性有限元模型来分析在集中载荷作用下小腿肢体残端的应力分布，且分析了不同边界条件对肢体残端应力分布的影响。此模型基于残肢、骨的三维几何形状，考虑残肢表面的不同位移约束条件、小变形假定，同时假定软组织和骨都为线弹性材料。得到了在集中载荷作用并考虑位移约束条件下肢体残端的最大主应力和剪切应力分布情况，并对此进行了比较和分析，此模型可以预测在不同载荷作用和不同位移约束条件下肢体残端的应力分布，可作为假肢优化设计的依据。

Three-dimensional Finite Element Stress Analyses on Residual Limb of Crus

This paper developed a three dimension finite element model to analyze stress distribution on residual limb of crus under lumped loads with different displacement constraint conditions. The soft tissue and bone are assumed as linear elastic materials undergoing small displacement. The maximum main stress and shear stress distribution on residual limb under fixate and different displacement restriction condition has been obtained. The model can be used to predict stress distribution on residual limb and aid optimizing artificial limb designing.