Finite element modelling of a residual lower-limb in a prosthetic socket: a survey of the development in the first decade
Finite element modelling of a residual lower-limb in a prosthetic socket: a survey of the development in the first decade
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DOI：
10.1016/s1350-4533(98)00027-7
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发表时间：
1998-07-01
影响因子：
2.2
通讯作者：
Roberts, VC
中科院分区：
文献类型：
--
作者：
Zhang, M;Mak, AFT;Roberts, VC
本文综述了1987 ~ 1996年建立的下肢假肢生物力学有限元模型。有限元分析可以是一个有用的工具，在调查残肢和假肢接受腔之间的机械相互作用，并在计算机辅助设计和计算机辅助制造的假肢接受腔。在这些模型中进行了各种假设和简化，以简化具有复杂几何形状、材料特性、边界和界面条件以及载荷情况的实际问题。分析结果可提供残肢/接受腔界面及残肢组织内的应力分布信息。最近，非线性模型已经开发考虑到插座整流，滑动/摩擦条件和材料的大变形的过程。到目前为止开发的模型提供了一些基本的生物力学的理解。这些模型的预测与实验测量的比较表明，预测的应力范围内测量，虽然一对一的对应关系是难以实现的。这些模型在考虑非线性和动力学效应的情况下，仍需要进一步的研究来改进，以获得更高的精度。(C)1998年，妇女平等研究所。由爱思唯尔科技有限公司出版。保留所有权利。
A review is presented of the existing finite element models developed from 1987 to 1996 for the biomechanics of lower-limb prostheses. Finite element analysis can be a useful tool in investigating the mechanical interaction between the residual limb and its prosthetic socket, and in computer-aided design and computer-aided manufacturing of prosthetic sockets. Various assumptions and simplifications are made in these models to simplify the actual problem with complex geometry, material properties, boundary and interfacial conditions, as well as loading situations. The analyses can provide the information on the stress distribution at the stump/socket interface and within the residual limb tissues. More recently, nonlinear models have been developed taking into consideration the process of socket rectifications, the slip/friction conditions and material large deformation. The models so far developed have provided some basic understanding of the biomechanics. Comparison of the predictions of these models with experimental measurements indicated that the predicted stresses were within the ranges measured, although one-to-one correspondence was difficult to achieve. Further research is still required in order to improve these models to obtain higher precision in the results taking into account nonlinear and dynamic effects. (C) 1998 IPEM. Published by Elsevier Science Ltd. All rights reserved.