Modeling modulus reduction in bovine trabecular bone damaged in compression.

T L Moore; L J Gibson

doi:10.1115/1.1407828

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PubMed · 11783733

Modeling modulus reduction in bovine trabecular bone damaged in compression.

T L Moore·L J Gibson

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Abstract

Loading bone beyond its yield point creates microdamage, leading to reduction in stiffness. Previously, we related microdamage accumulation to changes in mechanical properties. Here, we develop a model that predicts stiffness loss based on the presence of microdamage. Modeling is done at three levels: (1) a single trabecula, (2) a cellular solid consisting of intact, damaged, and fractured trabeculae, and (3) a specimen with a localized damage band. Predictions of a reduced modulus agree well with experimental measured modulus reductions of post-yield compression of bovine trabecular bone. The predicted reduced modulus is relatively insensitive to changes in the input parameters.

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Animals Bone and Bones Cattle Compressive Strength Elasticity Fractures, Bone Models, Biological Reproducibility of Results Stress, Mechanical Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S.

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T L Moore, L J Gibson. 2001. Modeling modulus reduction in bovine trabecular bone damaged in compression.. https://doi.org/10.1115/1.1407828

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