Imperial College London
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Dr Andrew Phillips

Faculty of Engineering, Department of Civil and Environmental Engineering

Reader in Structural Biomechanics
 
 
 
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Contact

 

+44 (0)20 7594 6081andrew.phillips Website

 
 
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Assistant

 

Ms Ruth Bello +44 (0)20 7594 6040

 
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Location

 

433Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Villette:2018:10.1016/j.medengphy.2018.07.016,
author = {Villette, CC and Phillips, ATM},
doi = {10.1016/j.medengphy.2018.07.016},
journal = {Medical Engineering and Physics},
pages = {1--12},
title = {Rate and age-dependent damage elasticity formulation for efficient hip fracture simulations},
url = {http://dx.doi.org/10.1016/j.medengphy.2018.07.016},
volume = {61},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Prediction of bone failure is beneficial in a range of clinical situations from screening of osteoporotic patients with high fracture risk to assessment of protective equipment against trauma. Computational efficiency is an important feature to consider when developing failure models for iterative applications, such as patient-specific diagnosis or design of orthopaedic devices. The authors previously developed a methodology to generate efficient mesoscale structural full bone models. The aim of this study was to implement a damage elasticity formulation representative of an elasto-plastic material model with age and strain rate dependencies compatible with these structural models. This material model was assessed in the prediction of femoral fractures in longitudinal compression and side fall scenarios. The simulations predicted failure loads and fracture patterns in good agreement with reported results from experimental studies. The observed influence of strain rate on failure load was consistent with literature. The superiority of a simplified elasto-plastic formulation over an elasto-brittle bone material model was assessed. This computationally efficient damage elasticity formulation was capable of capturing fracture development after onset.
AU  - Villette,CC
AU  - Phillips,ATM
DO  - 10.1016/j.medengphy.2018.07.016
EP  - 12
PY  - 2018///
SN  - 1350-4533
SP  - 1
TI  - Rate and age-dependent damage elasticity formulation for efficient hip fracture simulations
T2  - Medical Engineering and Physics
UR  - http://dx.doi.org/10.1016/j.medengphy.2018.07.016
UR  - https://www.sciencedirect.com/science/article/pii/S1350453318301255?via%3Dihub
VL  - 61
ER  -
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