Numerical analysis of fatigue crack growth in hip replacement implant
Abstract
Total hip replacement implants are a substitution of a diseased hip joint and require complete removal in order to restore hip joint functionality. Everyday physical activities produce dynamic load which is exerted onto joint surfaces. Under stated conditions, fatigue represents the most probable mechanism of implant failure. The aim of this paper is to observe structural behaviour from fatigue crack initiation to inevitable structural failure on a selected total hip replacement implant. Tendency to fatigue and its growth besides chosen material highly depends on structural geometry. Locations with the highest stress concentration are the most common place for crack initiation. Observing locations for numerical analysis are sharp edges on the neck area of selected total hip replacement implant. Applied load for this testing is equal to the maximal exerted load on a hip joint. Boundary conditions substitute the bone-implant contact.
Numerical analysis is performed in Abaqus software ex...tension-Morfeo, suitable for XFEM analysis. XFEM generates the mesh on a structure and with each new step in crack growth distributes nods evenly around the crack. Observation of crack growth shows how geometry on a specified total hip replacement implant affects the structural life of a component.
Keywords:
Hip replacement implant / Co-Cr alloy / Extended Finite Element Method (XFEM) / fatigue crackSource:
Loading and Environment Effects on Structural Integrity (book of abstracts), 22nd European Conference on Fracture - ECF22, Belgrade, 26 - 31 August, 2018., 2019, 117-Publisher:
- Faculty of Technology and Metallurgy, Research and Development Centre of Printing Technology
Collections
Institution/Community
Inovacioni centarTY - CONF AU - Milovanović, Aleksa AU - Čolić, Katarina AU - Grbović, Aleksandar AU - Sedmak, Simon AU - Golubović, Zorana PY - 2019 UR - https://machinery.mas.bg.ac.rs/handle/123456789/7353 AB - Total hip replacement implants are a substitution of a diseased hip joint and require complete removal in order to restore hip joint functionality. Everyday physical activities produce dynamic load which is exerted onto joint surfaces. Under stated conditions, fatigue represents the most probable mechanism of implant failure. The aim of this paper is to observe structural behaviour from fatigue crack initiation to inevitable structural failure on a selected total hip replacement implant. Tendency to fatigue and its growth besides chosen material highly depends on structural geometry. Locations with the highest stress concentration are the most common place for crack initiation. Observing locations for numerical analysis are sharp edges on the neck area of selected total hip replacement implant. Applied load for this testing is equal to the maximal exerted load on a hip joint. Boundary conditions substitute the bone-implant contact. Numerical analysis is performed in Abaqus software extension-Morfeo, suitable for XFEM analysis. XFEM generates the mesh on a structure and with each new step in crack growth distributes nods evenly around the crack. Observation of crack growth shows how geometry on a specified total hip replacement implant affects the structural life of a component. PB - Faculty of Technology and Metallurgy, Research and Development Centre of Printing Technology C3 - Loading and Environment Effects on Structural Integrity (book of abstracts), 22nd European Conference on Fracture - ECF22, Belgrade, 26 - 31 August, 2018. T1 - Numerical analysis of fatigue crack growth in hip replacement implant SP - 117 UR - https://hdl.handle.net/21.15107/rcub_machinery_7353 ER -
@conference{ author = "Milovanović, Aleksa and Čolić, Katarina and Grbović, Aleksandar and Sedmak, Simon and Golubović, Zorana", year = "2019", abstract = "Total hip replacement implants are a substitution of a diseased hip joint and require complete removal in order to restore hip joint functionality. Everyday physical activities produce dynamic load which is exerted onto joint surfaces. Under stated conditions, fatigue represents the most probable mechanism of implant failure. The aim of this paper is to observe structural behaviour from fatigue crack initiation to inevitable structural failure on a selected total hip replacement implant. Tendency to fatigue and its growth besides chosen material highly depends on structural geometry. Locations with the highest stress concentration are the most common place for crack initiation. Observing locations for numerical analysis are sharp edges on the neck area of selected total hip replacement implant. Applied load for this testing is equal to the maximal exerted load on a hip joint. Boundary conditions substitute the bone-implant contact. Numerical analysis is performed in Abaqus software extension-Morfeo, suitable for XFEM analysis. XFEM generates the mesh on a structure and with each new step in crack growth distributes nods evenly around the crack. Observation of crack growth shows how geometry on a specified total hip replacement implant affects the structural life of a component.", publisher = "Faculty of Technology and Metallurgy, Research and Development Centre of Printing Technology", journal = "Loading and Environment Effects on Structural Integrity (book of abstracts), 22nd European Conference on Fracture - ECF22, Belgrade, 26 - 31 August, 2018.", title = "Numerical analysis of fatigue crack growth in hip replacement implant", pages = "117", url = "https://hdl.handle.net/21.15107/rcub_machinery_7353" }
Milovanović, A., Čolić, K., Grbović, A., Sedmak, S.,& Golubović, Z.. (2019). Numerical analysis of fatigue crack growth in hip replacement implant. in Loading and Environment Effects on Structural Integrity (book of abstracts), 22nd European Conference on Fracture - ECF22, Belgrade, 26 - 31 August, 2018. Faculty of Technology and Metallurgy, Research and Development Centre of Printing Technology., 117. https://hdl.handle.net/21.15107/rcub_machinery_7353
Milovanović A, Čolić K, Grbović A, Sedmak S, Golubović Z. Numerical analysis of fatigue crack growth in hip replacement implant. in Loading and Environment Effects on Structural Integrity (book of abstracts), 22nd European Conference on Fracture - ECF22, Belgrade, 26 - 31 August, 2018.. 2019;:117. https://hdl.handle.net/21.15107/rcub_machinery_7353 .
Milovanović, Aleksa, Čolić, Katarina, Grbović, Aleksandar, Sedmak, Simon, Golubović, Zorana, "Numerical analysis of fatigue crack growth in hip replacement implant" in Loading and Environment Effects on Structural Integrity (book of abstracts), 22nd European Conference on Fracture - ECF22, Belgrade, 26 - 31 August, 2018. (2019):117, https://hdl.handle.net/21.15107/rcub_machinery_7353 .