Post-yield relaxation behavior of bovine cancellous bone
| Autor: | Geoffrey R. Piller, Roderic S. Lakes, Sylvana García-Rodríguez, Travis A. Burgers, Heidi-Lynn Ploeg |
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| Rok vydání: | 2009 |
| Předmět: |
medicine.medical_specialty
Materials science Compressive Strength Biomedical Engineering Biophysics In Vitro Techniques Models Biological Power law Viscoelasticity Weight-Bearing Elastic Modulus medicine Animals Computer Simulation Orthopedics and Sports Medicine Femur Composite material health care economics and organizations Viscoplasticity Strain (chemistry) Viscosity Rehabilitation Stress–strain curve humanities Surgery medicine.anatomical_structure Relaxation (physics) Cattle Stress Mechanical Cancellous bone |
| Zdroj: | Journal of Biomechanics. 42:2728-2733 |
| ISSN: | 0021-9290 |
| Popis: | Relaxation studies were conducted on specimens of bovine cancellous bone at post-yield strains. Stress and strain were measured for 1000s and the relaxation modulus was determined. Fifteen cylindrical, cancellous bone specimens were removed from one bovine femur in the anterior-posterior direction. The relaxation modulus was found to be a function of strain. Therefore cancellous bone is non-linearly viscoelastic/viscoplastic in the plastic region. A power law regression was fit to the relaxation modulus data. The multiplicative constant was found to be statistically related through a power law relationship to both strain (p0.0005) and apparent density (p0.0005) while the power coefficient was found to be related through a power law relationship, E(t, epsilon)=A(epsilon)t(-n(epsilon)), to strain (p0.0005), but not apparent density. |
| Databáze: | OpenAIRE |
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