Mechanical and Fatigue Behavior of Cellular Structure Ti-6Al-4V Alloy Femoral Stems: A Finite Element Analysis
Repetitive loads acting on the hip joint fluctuate according to the type of activities produced by the human body. Repetitive loading is one of the factors that leads to fatigue failure of the implanted stems. The objective of this study is to develop lightweight femoral stems with cubic porous stru...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-04-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/9/4197 |
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| author | Naser Fawzi Al Zoubi Faris Tarlochan Hassan Mehboob |
| author_facet | Naser Fawzi Al Zoubi Faris Tarlochan Hassan Mehboob |
| author_sort | Naser Fawzi Al Zoubi |
| collection | DOAJ |
| description | Repetitive loads acting on the hip joint fluctuate according to the type of activities produced by the human body. Repetitive loading is one of the factors that leads to fatigue failure of the implanted stems. The objective of this study is to develop lightweight femoral stems with cubic porous structures that will survive under fatigue loading. Cubic porous structures with different volumetric porosities were designed and subjected to compressive loading using finite element analysis (FEA) to measure the elastic moduli, yield strength, and ultimate tensile strength. These porous structures were employed to design femoral stems containing mechanical properties under compressive loading close to the intact bone. Several arrangements of radial geometrical porous functionally graded (FG) and homogenous Ti-6Al-4V porous femoral stems were designed and grouped under three average porosities of 30%, 50%, and 70% respectively. The designed stems were simulated inside the femoral bone with physiological loads demonstrating three walking speeds of 1, 3, and 5 km/h using ABAQUS. Stresses at the layers of the functionally graded stem were measured and compared with the yield strength of the relevant porous structure to check the possibility of yielding under the subjected load. The Soderberg approach is employed to compute the safety factor (N<sub>f</sub> > 1.0) for each design under each loading condition. Several designs were shortlisted as potential candidates for orthopedic implants. |
| first_indexed | 2024-03-10T04:22:39Z |
| format | Article |
| id | doaj.art-29de667a207e46899c62a55fe18da0c3 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T04:22:39Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-29de667a207e46899c62a55fe18da0c32023-11-23T07:45:41ZengMDPI AGApplied Sciences2076-34172022-04-01129419710.3390/app12094197Mechanical and Fatigue Behavior of Cellular Structure Ti-6Al-4V Alloy Femoral Stems: A Finite Element AnalysisNaser Fawzi Al Zoubi0Faris Tarlochan1Hassan Mehboob2Department for Mechanical and Industrial Engineering, Qatar University, Doha P.O. Box 2713, QatarDepartment for Mechanical and Industrial Engineering, Qatar University, Doha P.O. Box 2713, QatarDepartment of Engineering Management, College of Engineering, Prince Sultan University, Riyadh 11586, Saudi ArabiaRepetitive loads acting on the hip joint fluctuate according to the type of activities produced by the human body. Repetitive loading is one of the factors that leads to fatigue failure of the implanted stems. The objective of this study is to develop lightweight femoral stems with cubic porous structures that will survive under fatigue loading. Cubic porous structures with different volumetric porosities were designed and subjected to compressive loading using finite element analysis (FEA) to measure the elastic moduli, yield strength, and ultimate tensile strength. These porous structures were employed to design femoral stems containing mechanical properties under compressive loading close to the intact bone. Several arrangements of radial geometrical porous functionally graded (FG) and homogenous Ti-6Al-4V porous femoral stems were designed and grouped under three average porosities of 30%, 50%, and 70% respectively. The designed stems were simulated inside the femoral bone with physiological loads demonstrating three walking speeds of 1, 3, and 5 km/h using ABAQUS. Stresses at the layers of the functionally graded stem were measured and compared with the yield strength of the relevant porous structure to check the possibility of yielding under the subjected load. The Soderberg approach is employed to compute the safety factor (N<sub>f</sub> > 1.0) for each design under each loading condition. Several designs were shortlisted as potential candidates for orthopedic implants.https://www.mdpi.com/2076-3417/12/9/4197stem designimplantship replacementfemur bonetotal hip arthroplastyloading |
| spellingShingle | Naser Fawzi Al Zoubi Faris Tarlochan Hassan Mehboob Mechanical and Fatigue Behavior of Cellular Structure Ti-6Al-4V Alloy Femoral Stems: A Finite Element Analysis Applied Sciences stem design implants hip replacement femur bone total hip arthroplasty loading |
| title | Mechanical and Fatigue Behavior of Cellular Structure Ti-6Al-4V Alloy Femoral Stems: A Finite Element Analysis |
| title_full | Mechanical and Fatigue Behavior of Cellular Structure Ti-6Al-4V Alloy Femoral Stems: A Finite Element Analysis |
| title_fullStr | Mechanical and Fatigue Behavior of Cellular Structure Ti-6Al-4V Alloy Femoral Stems: A Finite Element Analysis |
| title_full_unstemmed | Mechanical and Fatigue Behavior of Cellular Structure Ti-6Al-4V Alloy Femoral Stems: A Finite Element Analysis |
| title_short | Mechanical and Fatigue Behavior of Cellular Structure Ti-6Al-4V Alloy Femoral Stems: A Finite Element Analysis |
| title_sort | mechanical and fatigue behavior of cellular structure ti 6al 4v alloy femoral stems a finite element analysis |
| topic | stem design implants hip replacement femur bone total hip arthroplasty loading |
| url | https://www.mdpi.com/2076-3417/12/9/4197 |
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