Linear elastic and hyperelastic studies of equine hoof mechanical response at different hydration levels.

This study compares the precision of different material models in predicting the mechanical behavior of an equine hoof under different hydration levels. The findings suggest that the Marlow hyperelastic model shows greater alignment with experimental data and physical observations, as compared to other models.

Research Objective and Method

• The purpose of this research was to investigate and compare the accuracy of different models in predicting the mechanical performance of the equine hoof. More specifically, the authors aimed to understand how the hoof behaves under different humidity levels.
• The researchers used both linear elastic (LE) and hyperelastic (HE) material models in their studies. Three HE models were used: Mooney-Rivlin, Neo-Hookean, and Marlow.
• Two comparative studies were conducted. In the first, rectangular hoof samples were simulated using previously published experimental data. The second focused on simulating the entire hoof, including nine related tissues, using computerized tomography (CT) scans of an equine forelimb and analyzing it under different conditions.

Results of the Study

• The researchers found that the Marlow hyperelastic model accurately predicted the stress-strain curve of the equine hoof, outperforming other models in the same context.
• For the entire hoof model, the mechanical strain was consistently under 2% regardless of humidity conditions. Again, the results of the Marlow model demonstrated better alignment with experimental data.
• The studies also found that higher hydration levels resulted in greater strains, suggesting such conditions might decrease tissue stiffness, and thereby increase strains. Additionally, greater ground reaction forces were observed to enhance stresses in certain parts of the hoof.

Conclusion and Implications

• The study’s findings suggest that the Marlow hyperelastic model provides the most precise predictions for equine hoof behavior under varying hydration conditions. This result aids in better understanding of equine hoof mechanics, potentially assisting in preventing common hoof ailments.
• The data also suggests that hydration levels and ground reaction forces need to be carefully considered in managing equine hoof health, as they can potentially influence the strain and stress levels endured by the hoof and its associated tissues.