Time dependent behaviour of trabecular bone at multiple load levels
| Autor: | Shuqiao Xie, Robert Wallace, A Hamish R W Simpson, Francesc Levrero-Florencio, Krishnagoud Manda, Pankaj Pankaj |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Materials science Creep-recovery 0206 medical engineering Biomedical Engineering CORTICAL BONE 02 engineering and technology medicine.disease_cause Article Viscoelasticity Weight-bearing Weight-Bearing 03 medical and health sciences Forensic engineering medicine Animals Femur Composite material Viscoelastic FATIGUE BEHAVIOR Steady state Strain (chemistry) Creep compliance STRAINS HUMAN CANCELLOUS BONE Bone volume fraction MECHANICAL-PROPERTIES 020601 biomedical engineering 030104 developmental biology medicine.anatomical_structure Creep Steady state creep rate Cattle Female Cortical bone MINERAL DENSITY Stress Mechanical VERTEBRAL DEFORMITY FEMORAL-HEAD Deformation (engineering) CREEP Femoral Fractures |
| Zdroj: | Xie, S, Manda, K, Wallace, R, Levrero florencio, F, Simpson, H & Pankaj, P 2017, ' Time dependent behaviour of trabecular bone at multiple load levels ', Annals of Biomedical Engineering, vol. 45, no. 5, pp. 1219-1226 . https://doi.org/10.1007/s10439-017-1800-1 Annals of Biomedical Engineering Xie, S, Manda, K, Wallace, R J, Levrero-Florencio, F, Simpson, A H R W & Pankaj, P 2017, ' Time Dependent Behaviour of Trabecular Bone at Multiple Load Levels ', Annals of Biomedical Engineering, vol. 45, no. 5, pp. 1219-1226 . https://doi.org/10.1007/s10439-017-1800-1 |
| DOI: | 10.1007/s10439-017-1800-1 |
| Popis: | The deformation of bone when subjected to loads is not instantaneous but varies with time. To investigate this time-dependent behaviour sixteen bovine trabecular bone specimens were subjected to compressive loading, creep, unloading and recovery at multiple load levels corresponding to apparent strains of 2000–25,000 με. We found that: the time-dependent response of trabecular bone comprises of both recoverable and irrecoverable strains; the strain response is nonlinearly related to applied load levels; and the response is linked to bone volume fraction. Although majority of strain is recovered after the load-creep-unload-recovery cycle some residual strain always exists. The analysis of results indicates that trabecular bone becomes stiffer initially and then experiences stiffness degradation with the increasing load levels. Steady state creep rate was found to be dependent on applied stress level and bone volume fraction with a power law relationship. |
| Databáze: | OpenAIRE |
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