Thermo-mechanical stresses distribution on bone drilling: Numerical and experimental procedures

• Type: Article in International Scientific Journal
• Date: 2019

Authors

Maria G. Fernandes (Author) Other; Elza M. Fonseca (Author) Other; Renato Natal Jorge (Author) FEUP

Journal

Title: Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications

Vol. 233 No. 4

Pages: 637-646

ISSN: 1464-4207

Publisher: SAGE

Indexing

ISI Web of Knowledge - 19 Citations

Scopus - 26 Citations

INSPEC

Other information

Authenticus ID: P-00Q-EZH

DOI: 10.1177/1464420716689337

Abstract (EN): In bone drilling, the temperature and the level of stresses at the bone tissue are function of the drilling parameters. If certain thresholds are exceeded, irreversible damages may occur on the bone tissue. One of the main challenges in the drilling process is to control the associated parameters and even more important, to avoid the surrounding tissue damage. In this study, a dynamic numerical model is developed to determine the thermo-mechanical stresses generated during the bone drilling, using the finite element method. The numerical model incorporates the geometric and dynamic characteristics involved in the drilling processes, as well the developed temperature inside the material. The numerical analysis has been validated by experimental tests using polyurethane foam materials with similar mechanical properties to the human bone. Results suggest that a drill bit with lower drill speed and higher feed rate can reduce the strains and stresses in bone during the drilling process. The proposed numerical model reflected adequately the experimental results and could be useful in determination of optimal drilling conditions that minimise the bone injuries.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10