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Open AccessFeature PaperArticle

Comparison of Meshing Strategies in THR Finite Element Modelling

1
Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, nr. 132, 84084 Fisciano, Italy
2
Escuela Técnica Superior de Ingeniería y Diseño Industrial, Universidad Politécnica de Madrid, Roda de Valencia, 3, 28012 Madrid, Spain
3
Laboratorio di Tecnologia Medica, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano, 1/10, 40136 Bologna, Italy
*
Author to whom correspondence should be addressed.
Materials 2019, 12(14), 2332; https://doi.org/10.3390/ma12142332
Received: 5 June 2019 / Revised: 24 June 2019 / Accepted: 20 July 2019 / Published: 23 July 2019
In biomechanics and orthopedics, finite element modelling allows simulating complex problems, and in the last few years, it has been widely used in many applications, also in the field of biomechanics and biotribology. As is known, one crucial point of FEM (finite element model) is the discretization of the physical domain, and this procedure is called meshing. A well-designed mesh is necessary in order to achieve accurate results with an acceptable computational effort. The aim of this work is to test a finite element model to simulate the dry frictionless contact conditions of a hip joint prosthesis (a femoral head against an acetabular cup) in a soft bearing configuration by comparing the performances of 12 common meshing strategies. In the simulations, total deformation of the internal surface of the cup, contact pressure, and the equivalent von Mises stress are evaluated by using loads and kinematic conditions during a typical gait, obtained from a previous work using a musculoskeletal multibody model. Moreover, accounting for appropriate mesh quality metrics, the results are discussed, underlining the best choice we identified after the large amount of numerical simulations performed. View Full-Text
Keywords: hip joint; prosthesis; tribology; contact; FEM; mesh hip joint; prosthesis; tribology; contact; FEM; mesh
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MDPI and ACS Style

Ruggiero, A.; D’Amato, R.; Affatato, S. Comparison of Meshing Strategies in THR Finite Element Modelling. Materials 2019, 12, 2332.

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