Soh A K, Soh C K, Lau W S
School of Mechanical Engineering, Nanyang Technological Institute, Singapore.
J Biomed Eng. 1990 Nov;12(6):470-6. doi: 10.1016/0141-5425(90)90056-s.
A simplified computer-based structural analysis procedure has been developed for evaluating the stresses in a lower limb prosthetic socket when subjected to external loads. This technique has been tested by studying a simple linear axisymmetric shell subjected to uniform loads. It was found that the stress and strain distribution obtained are close to those determined by a finite element technique. The method that has been proposed involves an incremental procedure, which can be used to analyse the behaviour of a prosthetic socket of irregular shape made from non-linear anisotropic materials. By employing the proposed procedure to study an example, in which a simplified lower limb prosthetic socket is subject to internal pressure and frictional forces, the effects of the material non-linearity have been found to be significant.
已开发出一种基于计算机的简化结构分析程序，用于评估下肢假肢接受腔在承受外部载荷时的应力。通过研究承受均匀载荷的简单线性轴对称壳体对该技术进行了测试。结果发现，所获得的应力和应变分布与通过有限元技术确定的结果相近。所提出的方法涉及一个增量过程，可用于分析由非线性各向异性材料制成的不规则形状假肢接受腔的性能。通过采用所提出的程序研究一个示例，即一个简化的下肢假肢接受腔承受内部压力和摩擦力，发现材料非线性的影响非常显著。
