The work shows correct procedures needed in order to gather reliable data from measurement of displacements versus axial load in a laboratory mounting of the Ilizarov external fixator. The mechanism of settling after load cycling is investigated. Detension under load is a major problem of wires. By means of vibration frequency measurements, tests on single wire allow determination of reduction in wire tension due to transverse loading: it is found that, almost independently from the amount of clamp tightening, the tension reaches a lower limit related only to the transverse load and not related to pretension. It is shown that, for higher clamp tightening torques, wire detension must be attributed to permanent plastic deformation of the wires; moreover, it is shown that the unavoidable errors in the spacing of the tensioned wires lead to marked decrease of their stiffness under transverse load.
Skip Nav Destination
Article navigation
February 1993
Research Papers
Mechanical Performance of External Fixators With Wires for the Treatment of Bone Fractures—Part II: Wire Tension and Slippage
C. Delprete,
C. Delprete
Dipartimento di Meccanica, Politecnico di Torino, 10100 Torino, Italia
Search for other works by this author on:
M. M. Gola
M. M. Gola
Dipartimento di Meccanica, Politecnico di Torino, 10100 Torino, Italia
Search for other works by this author on:
C. Delprete
Dipartimento di Meccanica, Politecnico di Torino, 10100 Torino, Italia
M. M. Gola
Dipartimento di Meccanica, Politecnico di Torino, 10100 Torino, Italia
J Biomech Eng. Feb 1993, 115(1): 37-42 (6 pages)
Published Online: February 1, 1993
Article history
Received:
July 18, 1990
Revised:
June 18, 1992
Online:
March 17, 2008
Citation
Delprete, C., and Gola, M. M. (February 1, 1993). "Mechanical Performance of External Fixators With Wires for the Treatment of Bone Fractures—Part II: Wire Tension and Slippage." ASME. J Biomech Eng. February 1993; 115(1): 37–42. https://doi.org/10.1115/1.2895468
Download citation file:
Get Email Alerts
Related Articles
Mechanical Performance of External Fixators With Wires for the Treatment of Bone Fractures—Part I: Load-Displacement Behavior
J Biomech Eng (February,1993)
Nonlinear Deformation Behavior of Clamped Bolted Joints Under a Separating Service Load
J. Pressure Vessel Technol (April,2011)
Axial Stresses in Armor Wires of Bent Submarine Cables
J. Eng. Ind (August,1969)
Related Proceedings Papers
Related Chapters
Basic Concepts
Design & Analysis of ASME Boiler and Pressure Vessel Components in the Creep Range
Introduction and Definitions
Handbook on Stiffness & Damping in Mechanical Design
Supporting Systems/Foundations
Handbook on Stiffness & Damping in Mechanical Design