Plasticity effects during the 4-point bending of intramedullary leg lengthening implants with telescopic structures
2015 (English)In: M2D2015: PROCEEDINGS OF THE 6TH INTERNATIONAL CONFERENCE ON MECHANICS AND MATERIALS IN DESIGN, INEGI-FEUP , 2015, 893-904 p.Conference paper (Refereed)Text
A telescopic intramedullary leg lengthening implant during standard (ASTM F1264) four-point bend testing is analysed in this study. The structure of a telescopic implant is simulated using different finite element models in order to understand the ultimate bending behaviour. The surface morphology on the internal contact surfaces is also analysed using scanning electron microscopy and atomic force microscopy. The results show that the simulation of correct non-linear behaviour necessitates plastic material models and representative contacts between nested parts. Based on the microscopy analysis, the damage on the contact surfaces inside the locking mechanism of a real tested implant is not found critical in terms of probable crack nucleation sites.
Place, publisher, year, edition, pages
INEGI-FEUP , 2015. 893-904 p.
biomechanics, finite element analysis, atomic force microscopy
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-190695ISI: 000378595500169ISBN: 978-989-98832-3-9OAI: oai:DiVA.org:kth-190695DiVA: diva2:952586
6th International Conference on Mechanics and Materials in Design (M2D), JUL 26-30, 2015, P Delgada, PORTUGAL
QC 201608152016-08-152016-08-122016-08-15Bibliographically approved