Three-dimensional finite element model of the drilling process used for fixation of Salter–Harris type-3 fractures by using a K-wire
In this study, the drilling process was performed with Kirschner wire (K-wire) for stabilization after reduction of Salter–Harris (SH) type-3 epiphyseal fractures of distal femur. The study was investigated both experimentally and numerically. The numerical analyses were performed with finite elemen...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2015-08-01
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| Series: | Mechanical Sciences |
| Online Access: | http://www.mech-sci.net/6/147/2015/ms-6-147-2015.pdf |
| Summary: | In this study, the drilling process was performed with Kirschner wire
(K-wire) for stabilization after reduction of Salter–Harris (SH) type-3
epiphyseal fractures of distal femur. The study was investigated both
experimentally and numerically. The numerical analyses were performed with
finite element method (FEM), using DEFORM-3D software. Some conditions such as
friction, material model and load and boundary must be identified exactly
while using FEM. At the same time, an analytic model and software were
developed, which calculate the process parameters such as drilling power and
thrust power, heat transfer coefficients and friction coefficient between
tool–chip interface in order to identify the temperature distributions
occurring in the K-wire and bone model (Keklikoǧlu Plastik San.) material during the drilling process.
Experimental results and analysis results have been found as consistent with
each other. The main cutting force, thrust force, bone model temperature and
K-wire temperature were measured as 80° N, 120° N, 69 °C and
61 °C for 400 rpm in experimental studies. The main cutting
force, thrust force, bone model temperature and K-wire temperature were
measured as 65° N, 87° N, 91 °C and 82 °C
for 800 rpm in experimental studies. The main cutting force, thrust force,
bone model temperature and K-wire temperature were measured as 85° N, 127° N, 72 °C and 67 °C for 400 rpm in analysis
studies. The main cutting force, thrust force, bone model temperature and
K-wire temperature were measured as 69° N, 98° N, 83 °C and
76 °C for 800 rpm in analysis studies. A good consistency
was obtained between experimental results and finite element analysis (FEA) results. This proved the
validity of the software and finite element model. Thus, this model can be
used reliably in such drilling processes. |
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| ISSN: | 2191-9151 2191-916X |