Development and Experimental Verification of a Generative CAD/FEM Model
of an External Fixation Device

Mešić, Elmedin; Muminovic, Adil; Colic, Mirsad; Petrovic, Marin; Pervan, Nedim

doi:10.31803/tg-20191112161707

Cited by 7 publications

(7 citation statements)

References 9 publications

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“…Here, in addition to the values of the stiffness of the structural design of the Orthofix fixator, the stiffness of the fracture was also analyzed. The stiffness of the clamp structure according to the axial load with compressive force (C p ) is calculated using the following relation [24,25]:…”

Section: Methodsmentioning

confidence: 99%

Stiffness Analysis of the External Fixation System at Axial Pressure Load

Pervan¹,

Mešić²,

Muminović³

et al. 2022

Adv. Sci. Technol. Res. J.

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The paper analyzes the stiffness of the Orthofix external fixation system at axial pressure load, applied to the lower leg in case of an unstable fracture. Based on the actual construction of the Orthofix fixator, its 3D model was formed, and then a structural analysis was performed in the CATIA V5 software system. The aim of this paper is to investigate the mechanical properties of Orthofix fixator. FEM analysis of the fixator revealed displacements at characteristic points of the structure and fractures. During the FEM analysis, it is possible to change the load values, all with the aim of obtaining the best possible information about the behavior of the fixator during installation and use by the patient. Based on the results obtained from the FEM analysis, it can be concluded that the Orthofix fixative shows very good stiffness, but also that it can be improved by using newer materials, such as composite or some alloys of titanium and aluminum.

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Section: Methodsmentioning

confidence: 99%

Stiffness Analysis of the External Fixation System at Axial Pressure Load

Pervan¹,

Mešić²,

Muminović³

et al. 2022

Adv. Sci. Technol. Res. J.

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“…Total stiffness is defined as the ratio between the load and the resulting relative displacement of the observed pair of points. [24,25,26]:…”

Section: Determination Of Stress Displacement and Stiffnessmentioning

confidence: 99%

The Impact of Geometry on the Mechanical Stability of Plates for Internal Bone Fixation

Pervan¹,

Mešić²,

Metović³

et al. 2023

Adv. Sci. Technol. Res. J.

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The aim of this work is to investigate the impact of geometry on the mechanical stability of characteristic structural solutions of plates for internal bone fixation using the finite element method (FEM). Based on the realistic construction of plates for internal bone fixation, 3D geometric and FEM models were formed, and then structural analysis was carried out in the CAD/CAE system CATIA V5. Five different types of plates for internal bone fixation were tested under two types of loads: axial pressure and torque in the case of application to the femur. During the structural analysis, stresses and displacements were monitored at characteristic points of the structure. The most attention was paid to the relative displacements of the bone model fragments, because the stiffness of the plates for the internal fixation of the bone was determined based on them. At the end of the paper, the results of all analyzed plates are presented, their mutual comparison as well as the conclusion in which, based on everything done, it was stated which plate would be the most favorable solution for a given case of bone fracture.

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“…Apart from stresses, displacement values at the same points were monitored so the stiffness of the device can be defined as the ratio of the load and displacements. The device stiffness under the impact of axial load can be defined as [19,21]:…”

Section: Development Of the Cad/fem Modelmentioning

confidence: 99%

Mechanical Stability Analysis of the External Unilateral Fixation Device due to the Impact of Axial Pressure

Pervan¹,

Mešić²,

Muminović³

et al. 2023

Eng. Technol. Appl. Sci. Res.

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This study performed a mechanical stability analysis for the impact of axial pressure on an Ultra X external unilateral fixation device applied to a tibia with an open fracture. The real construction of the fixation device was used to create a 3D geometric model using a Finite Element Method (FEM) model, which was made to perform structural analysis in the CATIA V5 (Computer Aided Three-dimensional Interactive Application) CAD/CAE system. Specific stresses and displacements were observed at points of interest using structural analysis. The focus was on the relative displacements of the proximal and distal bone segments in the fracture zone. These displacements were used to calculate the stiffnesses of the bone in the fracture zone and the fixation device itself. The results obtained provide the necessary information regarding the stability of the Ultra X fixation device.

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Development and Experimental Verification of a Generative CAD/FEM Model of an External Fixation Device

Cited by 7 publications

References 9 publications

Stiffness Analysis of the External Fixation System at Axial Pressure Load

Stiffness Analysis of the External Fixation System at Axial Pressure Load

The Impact of Geometry on the Mechanical Stability of Plates for Internal Bone Fixation

Mechanical Stability Analysis of the External Unilateral Fixation Device due to the Impact of Axial Pressure

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