Computational Shape Design Optimization of Femoral Implants: Towards Efficient Forging Manufacturing
Source abstract
Abstract
Total hip replacement is one of the most successful orthopedic operations in modern times. Osteolysis of the femur bone results in implant loosening and failure due to improper loading. To reduce induced stress, enhance load transfer, and minimize stress, the use of Ti-6Al-4V alloy in bone implants was investigated. The objective of this study was to perform a three-dimensional finite element analysis (FEA) of the femoral stem to optimize its shape and analyze the developed deformations and stresses under operational loads. In addition, the challenges associated with the manufacturing optimization of the femoral stem using large strain-based finite element modeling were addressed. The numerical findings showed that the optimized femoral stem using Ti-6Al-4V alloy under the normal daily activities of a person presented a strains distribution that promote uniform load transfer from the proximal to the distal area, and provided a mass reduction of 26%. The stress distribution was found to range from 700 to 0.2 MPa in the critical neck area of the implant. The developed computational tool allows for improved customized designs that lower the risk of prosthesis loss due to stress shielding.
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Research context
OpenAlex topics: Orthopaedic implants and arthroplasty · Titanium Alloys Microstructure and Properties · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Mechanical Engineering, Universidad de La Frontera, Temuco 4811230, Chile
Department of Materials Engineering (DIMAT), Faculty of Engineering, Universidad de Concepción, Concepción 4070138, Chile
Department of Mechanics and Advanced Materials, Campus Monterrey, School of Engineering and Sciences, Tecnológico de Monterrey, Av. Eugenio Garza Sada 2501 Sur, Tecnológico, Monterrey 64849, NL, Mexico
Departamento de Ingeniería Mecánica y Metalúrgica, Pontificia Universidad Católica de Chile, Principal Investigator of the MIGA Millennium Institute (ICN2021_023), Av. Vicuña Mackenna 4860, Santiago 7820436, Chile
Departamento de Ingeniería Mecánica, Universidad de Santiago de Chile (USACH), Av. Bernardo O’Higgins 3363, Santiago 9170016, Chile
Laboratoire des Systèmes Complexe (LSC), Ecole Supérieure en Génie Electrique et Energétique ESGEE Oran, Chemin Vicinal N9, Oran 31000, Algeria
Department of Industrial Technologies, Faculty of Engineering, University of Talca, Camino a Los Niches Km 1, Curicó 3344158, Chile
Department of Mechanical Engineering, Universidad del Bío-Bío, Concepción 4081112, Chile
Faculty of Engineering, University of Talca, Camino a Los Niches Km 1, Curicó 3344158, Chile
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