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An experimentally validated model for the ilizarov fixator considering the loss of wire’s pretension

Kourkoulis S. K., Mitousoudis A.

Engineering Transactions

2016

Vol. 64, iss. 4

621--627

The purpose of this study is to assess the biomechanical performance of the Ilizarov fixator and to attempt optimization of its configuration. Attention is focused to the quantification of the wires’ pretension loss. The study is implemented according to a combined experimental and numerical scheme: The data of a long series of experiments are used to calibrate and validate a numerical model. The model is then used for parametric analysis of the factors which, according to clinical experience, influence the efficiency of the device. It was concluded that the most critical factors are the pretension of the wires, the angle between them and the rings’ diameter; the role of the remaining factors is of rather minor importance.

Some Notes on Analysis of Bending and Torsion Combined Loading

Jakubovičová L., Sága M., Kopas P., Handrik M., Vaško M.

Machine Dynamics Research

2010

Vol. 34, No. 3

97-105

The purpose of this paper is to present procedure of stress and strain distribution analyses at the testing sample. Experimental device is designed for combined bending - torque loading. Structural design of the equipment allows loading by constant turn of the clamping parts. The stress and strain magnitude in test sample depends on the shape and material sample. To obtain the exact solution of the stress and strain values is generally very difficult and therefore for their specification was used FE method and experimental measurement using optical system ARAMIS.