TY  - JOUR
AU  - Smoljanić, Tamara
AU  - Milovanović, Aleksa
AU  - Sedmak, Simon
AU  - Milović, Ljubica
AU  - Sedmak, Aleksandar
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7039
AB  - This paper presents development of numerical models for simulation of the behaviour of titanium alloy hip implants under static and dynamic loads, which is a part of extensive research involving the structural integrity of such implants under various loading conditions, as well as under exposure to aggressive environments. Numerical models were created in ABAQUS and ANSYS software packages, in order to determine the stress/strain distribution, the number of cycles to failure and stress intensity factors, for two different hip implant geometries. The ABAQUS models were used for static and ANSYS models for dynamic loads. The next stage in this analysis involved comparing these two cases, to determine the one with the better behaviour, depending on the exploitation conditions, which can greatly vary between different groups of patients. The targeted patient weight for all numerical simulations was 90 kg, while failure assessment diagrams were made for both implant geometries, assuming a crack length of 1 mm.
AB  - U ovom radu je prikazan razvoj numeričkih modela za simulaciju implantata za zamenu zgloba kuka pod
statičkim i dinamičkim opterećenjima, kao deo širokog istraživanja koje uključuje procenu integriteta
implantata kuka u različitim uslovima, kao što su zamor i korozija. Numerički modeli su napravljeni u
ABAQUS i ANSYS softverskim paketima, u cilju procene distribucije napon/deformacija i broja ciklusa do
loma, kao i vrednosti faktora intenziteta napona za dve različite geometrije implanta kuka. ABAQUS
modeli su korišćeni za simulaciju pod statičkim, a ANSYS modeli za simulaciju pod dinamičkim
opterećenjima. Sledeća etapa analize uključuje poređenje ova dva slučaja, kako bi se odredilo koja od
ove dve geometrije pruža bolje ponašanje u eksploatacionim uslovima, a koje mogu značajno varirati
zavisno od pacijenta. Simulacije su vršene za pacijenta mase 90 kg. Za ovu svrhu, dijagrami procene rizika
su napravljeni za obe navedene geometrije, pod pretpostavkom da je dužina inicijalne prsline 1 mm.
PB  - Savez hemijskih inženjera Srbije
T2  - Hemijska industrija
T1  - Numerical simulation of titanium alloy hip replacement implants behaviour under static and dynamic loads
T1  - Numerička simulacija implantata kuka od legure titanijuma pod
statičkim i dinamičkim opterećenjima
EP  - 292
IS  - 4
SP  - 283
VL  - 77
DO  - 10.2298/HEMIND221118026S
ER  - 

@article{
author = "Smoljanić, Tamara and Milovanović, Aleksa and Sedmak, Simon and Milović, Ljubica and Sedmak, Aleksandar",
year = "2023",
abstract = "This paper presents development of numerical models for simulation of the behaviour of titanium alloy hip implants under static and dynamic loads, which is a part of extensive research involving the structural integrity of such implants under various loading conditions, as well as under exposure to aggressive environments. Numerical models were created in ABAQUS and ANSYS software packages, in order to determine the stress/strain distribution, the number of cycles to failure and stress intensity factors, for two different hip implant geometries. The ABAQUS models were used for static and ANSYS models for dynamic loads. The next stage in this analysis involved comparing these two cases, to determine the one with the better behaviour, depending on the exploitation conditions, which can greatly vary between different groups of patients. The targeted patient weight for all numerical simulations was 90 kg, while failure assessment diagrams were made for both implant geometries, assuming a crack length of 1 mm., U ovom radu je prikazan razvoj numeričkih modela za simulaciju implantata za zamenu zgloba kuka pod
statičkim i dinamičkim opterećenjima, kao deo širokog istraživanja koje uključuje procenu integriteta
implantata kuka u različitim uslovima, kao što su zamor i korozija. Numerički modeli su napravljeni u
ABAQUS i ANSYS softverskim paketima, u cilju procene distribucije napon/deformacija i broja ciklusa do
loma, kao i vrednosti faktora intenziteta napona za dve različite geometrije implanta kuka. ABAQUS
modeli su korišćeni za simulaciju pod statičkim, a ANSYS modeli za simulaciju pod dinamičkim
opterećenjima. Sledeća etapa analize uključuje poređenje ova dva slučaja, kako bi se odredilo koja od
ove dve geometrije pruža bolje ponašanje u eksploatacionim uslovima, a koje mogu značajno varirati
zavisno od pacijenta. Simulacije su vršene za pacijenta mase 90 kg. Za ovu svrhu, dijagrami procene rizika
su napravljeni za obe navedene geometrije, pod pretpostavkom da je dužina inicijalne prsline 1 mm.",
publisher = "Savez hemijskih inženjera Srbije",
journal = "Hemijska industrija",
title = "Numerical simulation of titanium alloy hip replacement implants behaviour under static and dynamic loads, Numerička simulacija implantata kuka od legure titanijuma pod
statičkim i dinamičkim opterećenjima",
pages = "292-283",
number = "4",
volume = "77",
doi = "10.2298/HEMIND221118026S"
}

Smoljanić, T., Milovanović, A., Sedmak, S., Milović, L.,& Sedmak, A.. (2023). Numerical simulation of titanium alloy hip replacement implants behaviour under static and dynamic loads. in Hemijska industrija
Savez hemijskih inženjera Srbije., 77(4), 283-292.
https://doi.org/10.2298/HEMIND221118026S

Smoljanić T, Milovanović A, Sedmak S, Milović L, Sedmak A. Numerical simulation of titanium alloy hip replacement implants behaviour under static and dynamic loads. in Hemijska industrija. 2023;77(4):283-292.
doi:10.2298/HEMIND221118026S .

Smoljanić, Tamara, Milovanović, Aleksa, Sedmak, Simon, Milović, Ljubica, Sedmak, Aleksandar, "Numerical simulation of titanium alloy hip replacement implants behaviour under static and dynamic loads" in Hemijska industrija, 77, no. 4 (2023):283-292,
https://doi.org/10.2298/HEMIND221118026S . .

TY  - CONF
AU  - Smoljanić, Tamara
AU  - Sedmak, Simon
AU  - Milovanović, Aleksa
AU  - Milović, Ljubica
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6628
AB  - One of the most important aspects of materials typically used in biomedical engineering is their resistance to various unfavourable exploitation conditions, which greatly impact their work life. In terms of extreme conditions, two major factors include fatigue and corrosion, and a combination of these can significantly decrease the expected life of various implants. The focus of this paper will be on hip implants made of Ti-Al6-4V titanium alloy, a material commonly used in such applications, due to its resistance to corrosion and bio-compatibility. Research shown here was based on experimental testing of said alloy in order to determine its mechanical properties under different working environments, including normal, salty and wet conditions. These properties were then used as input data for Extended Finite Element method (XFEM) numerical simulations of fatigue crack growth in hip implants with various geometries. This was of particular interest since specimens which were kept in salty and wet environment had a slight degradation of yield stress and tensile strength, but an increase in plasticity.
PB  - Elsevier B.V.
C3  - Procedia Structural Integrity
T1  - Numerical simulation of fatigue crack growth in Ti-Al6-V4 hip implants under different exploitation conditions
EP  - 221
SP  - 215
VL  - 48
DO  - 10.1016/j.prostr.2023.07.151
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6628
ER  - 

@conference{
author = "Smoljanić, Tamara and Sedmak, Simon and Milovanović, Aleksa and Milović, Ljubica",
year = "2023",
abstract = "One of the most important aspects of materials typically used in biomedical engineering is their resistance to various unfavourable exploitation conditions, which greatly impact their work life. In terms of extreme conditions, two major factors include fatigue and corrosion, and a combination of these can significantly decrease the expected life of various implants. The focus of this paper will be on hip implants made of Ti-Al6-4V titanium alloy, a material commonly used in such applications, due to its resistance to corrosion and bio-compatibility. Research shown here was based on experimental testing of said alloy in order to determine its mechanical properties under different working environments, including normal, salty and wet conditions. These properties were then used as input data for Extended Finite Element method (XFEM) numerical simulations of fatigue crack growth in hip implants with various geometries. This was of particular interest since specimens which were kept in salty and wet environment had a slight degradation of yield stress and tensile strength, but an increase in plasticity.",
publisher = "Elsevier B.V.",
journal = "Procedia Structural Integrity",
title = "Numerical simulation of fatigue crack growth in Ti-Al6-V4 hip implants under different exploitation conditions",
pages = "221-215",
volume = "48",
doi = "10.1016/j.prostr.2023.07.151",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6628"
}

Smoljanić, T., Sedmak, S., Milovanović, A.,& Milović, L.. (2023). Numerical simulation of fatigue crack growth in Ti-Al6-V4 hip implants under different exploitation conditions. in Procedia Structural Integrity
Elsevier B.V.., 48, 215-221.
https://doi.org/10.1016/j.prostr.2023.07.151
https://hdl.handle.net/21.15107/rcub_technorep_6628

Smoljanić T, Sedmak S, Milovanović A, Milović L. Numerical simulation of fatigue crack growth in Ti-Al6-V4 hip implants under different exploitation conditions. in Procedia Structural Integrity. 2023;48:215-221.
doi:10.1016/j.prostr.2023.07.151
https://hdl.handle.net/21.15107/rcub_technorep_6628 .

Smoljanić, Tamara, Sedmak, Simon, Milovanović, Aleksa, Milović, Ljubica, "Numerical simulation of fatigue crack growth in Ti-Al6-V4 hip implants under different exploitation conditions" in Procedia Structural Integrity, 48 (2023):215-221,
https://doi.org/10.1016/j.prostr.2023.07.151 .,
https://hdl.handle.net/21.15107/rcub_technorep_6628 .