What question did this study set out to answer?

To establish and validate a comprehensive multiaxial failure yield criterion for human femoral neck trabecular bone using high-resolution micromechanical modeling.

December 1, 2004Journal of Biomechanical Engineering

The Modified Super-Ellipsoid Yield Criterion for Human Trabecular Bone

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Authors

HBHarun BayraktarAnkara University AGAtul GuptaPhilips (United States)RKRon Y. KwonUniversity of California, Berkeley

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Implication

Biomechanical modeling study demonstrates accurate multiaxial failure prediction in human femoral trabecular bone, highlighting a robust four-parameter yield criterion.

Key Points

To establish and validate a comprehensive multiaxial failure yield criterion for human femoral neck trabecular bone using high-resolution micromechanical modeling.
Generated high-resolution nonlinear micromechanical finite-element models from microcomputed tomography scans of 3 human femoral neck trabecular bone specimens.
Simulated 889 multiaxial loading cases across 3D normal strain and 2D normal-shear strain spaces, utilizing over 41,000 CPU hours on parallel supercomputers.
Multiaxial yield behavior in strain space was nearly isotropic and homogeneous across specimens, showing uncoupled behavior along normal strain axes but substantial coupling during normal-shear loading.
A four-parameter modified super-ellipsoid surface fit 3D normal strain yield data with an arithmetic error of less than -0.04 ± 5.1%, while principal strains from normal-shear loading aligned within 2.5 ± 6.5%.

Cite This Study

Bayraktar et al. (2004) studied this question.

synapsesocial.com/papers/69dac3d2aae38ff6ad836873 https://doi.org/10.1115/1.1763177

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Implication

Biomechanical modeling study demonstrates accurate multiaxial failure prediction in human femoral trabecular bone, highlighting a robust four-parameter yield criterion.

The Modified Super-Ellipsoid Yield Criterion for Human Trabecular Bone

Discussion

Member takes

Implication

Key Points

Cite This Study

The Modified Super-Ellipsoid Yield Criterion for Human Trabecular Bone

Discussion

Member takes

Implication

Key Points

Cite This Study

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