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Advisor(s)
Abstract(s)
The main goal of this paper is to assess the mechanical damage in solid rigid foam materials with similar mechanical
properties to the human bone induced by the cutting parameters. In the present study, a three-dimensional dynamic
finite element model was developed to simulate the drilling process in solid rigid foam materials and it was validated with
experimental results. Using an explicit dynamic numerical simulation, it is possible to obtain large structural deformation
with high load intensity in short time frame. The developed model is used to study the effects of different high intensity
loads distribution in the solid rigid foam materials. Laboratory tests were produced using biomechanical test blocks
instrumented with strain gauges in different surface positions during the drilling process. The comparison between the
numerical and the experimental results enables the evaluation and improvements of the cutting process. It was concluded
when the feed-rate is higher, the stresses and strains in the solid rigid foam material are lower. The developed numerical
model proved to be a great tool in this kind of analysis and available to use in forthcoming tests.
Description
Keywords
Drilling processes Solid rigid foam materials Stresses Damage
Citation
Fernandes, M. G.; Fonseca, E.M.M.; Natal, R. M. (2018). Three-dimensional dynamic finite element and experimental models for drilling processes. Proceedings of the Institution of Mechanical Engineers. Proceedings part L, Journal of materials: design and applications. ISSN 1464-4207. 232:1, p. 35-43