Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/60898
Title: 3D finite element dynamic analysis of interface stress at residual limb of a trans-tibial amputee
Other Titles: 小腿截肢患者残端应力的三维有限元动态分析
Authors: Jia, XH
Zhang, M 
Wang, RC
Jin, DW
Keywords: Prosthetic socket
Interface stress
Finite element analysis
Dynamic loads
Issue Date: 2004
Publisher: 中国学术期刊(光盘版)电子杂志社
Source: 中国康复医学杂志 (Chinese journal of rehabilitation medicine), 2004, v. 19, no. 5, p. 334-336 How to cite?
Journal: 中国康复医学杂志 (Chinese journal of rehabilitation medicine) 
Abstract: 目的:研究接受腔/残肢界面应力分布特征,为假肢优化设计提供基础.
方法:基于核磁共振图像,获得小腿截肢患者残端和假肢几何特征,建立三维非线性有限元模型,通过比较站立状态和行走过程中的界面应力,研究动态载荷对界面压力的影响.
结果:界面压力主要分布在髌韧带、胫骨内外侧和腘窝区,一个平地正常速度行走的步态周期内,残肢界面的最大平均正压力是单腿站立状态下的1.15倍,最大平均切应力是单腿站立状态的1.4倍.
结论:动态载荷使残肢和接受腔之间的界面应力增大,行走过程的动态影响不宜忽略.
Objective:A quantitative understanding of the interface stress distribution between prosthetic socket and residual limb is fundamental for an optimal design of artificical limb.
Method: The geometry of residual limb and prosthesis was obtained based on MR images, a 3D nonlinear finite element(FE)model was developed.The interface stresses were compared between walking and standing state, and the effect of dynamic loads of interface stress was investigated.
Result:Interface stress was mainly distributed at patella tendon,lateral tibia,media tibia and popliteal pit regions,and the average peak interface pressure during walking was 1.15 times as the one with single-leg standing,and the shear stress was 1.4 times.
Conclusion:Interface stress between the residual limb and prosthetic socket increases due to the dynamic loads.The dynamic effects during walking can′t be ignored.
URI: http://hdl.handle.net/10397/60898
ISSN: 1001-1242
Rights: © 2004 中国学术期刊电子杂志出版社。本内容的使用仅限于教育、科研之目的。
© 2004 China Academic Journal Electronic Publishing House. It is to be used strictly for educational and research use.
Appears in Collections:Journal/Magazine Article

Files in This Item:
File Description SizeFormat 
r23039.pdf235.42 kBAdobe PDFView/Open
Access
View full-text via PolyU eLinks SFX Query
Show full item record
PIRA download icon_1.1View/Download Contents

Page view(s)

57
Last Week
1
Last month
Citations as of Aug 21, 2018

Download(s)

8
Citations as of Aug 21, 2018

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.