| Authors | H. Ashrafi, M. Shariyat |
|---|---|
| Journal | Journal of Biomedical Physics and Engineering |
| Volume number | 2 |
| Paper Type | Original Research |
| Published At | 2012 |
| Journal Grade | ISI |
| Journal Type | Typographic |
| Journal Country | Iran, Islamic Republic Of |
Abstract
he main objective of this work was to develop a mathematical approach capable of determining the time-dependent Poisson's ratios of the periodontal ligaments based on experimental data of stress relaxation and creep tests. The resulting stress relaxation and creep curves are described by a three-parameter viscoelastic models. The time-dependent Poisson's ratios of the periodontal ligaments have been obtained as increasing functions of time, because shear modulus of these ligaments relaxes much more than their bulk modulus.