Method on the prediction of bone micro-level mechanical parameter combining apparent compressive experiment and finite element analysis
FAN Ruoxun
LIU Jie
GAN Shukun
ZHANG Min
Abstract：Bone apparent mechanical parameters are used to evaluate bone quality;however, bone micro-level mechanical pa-rameters cannot serve as evaluation criteria because of the difficulty in measurement.In order to investigate bone quality at micro-lev-el, a method in predicting bone micro-level mechanical parameter was provided in this study.Rat femoral cortical bone was used as research example to predict its micro-level failure strain.The rat femoral cortical bone finite element models were primarily estab-lished based on the computed tomography;then, finite element analyses were performed to simulate the failure processes under com-pressive load, which simulated the boundary and loading conditions of the apparent compressive experiment;meanwhile, micro-level failure strains were back-calculated by fitting the experimental apparent stress-strain curves.The analysis results showed that the mi-cro-level failure strains in the four rats at the age of 7 months were in the range of 4.53%～4.75%.This method can predict bone micro-level mechanical parameter in an accurate way based on the verification with experiments.
Keywords：Apparent mechanical propertiesMicro-level mechanical propertiesCompressive experimentFinite element analy-sisBack-calculateCortical bone
Publication Date：2018-01-01
Online Publishing Date：2026-09-11(First online date of this platform, not the publication date of the document)
Pages：5( 195-199 )