Research Article
Development and Validation of an Age-Specific Lower Extremity Finite Element Model for Simulating Pedestrian Accidents
Table 2
The long bone material properties of lower extremity model.
| | Material parameters | The young (30 YO) | The elderly (70 YO) |
| Femoral cortical bone | Density (kg/m3) | 2000 | 2000 | Elastic modulus (MPa) | 16.2 | 13.9 | Poisson’s ratio | 0.3 | 0.3 | Yield stress | 100.22 | 94.4 | Limit strain | 0.032 | 0.019 |
| Tibial cortical bone | Density (kg/m3) | 2000 | 2000 | Elastic modulus (MPa) | 18.3 | 15.7 | Poisson’s ratio | 0.3 | 0.3 | Yield stress | 120.3 | 113.28 | Limit strain | 0.034 | 0.020 |
| Femur cancellous bone | Density (kg/m3) | 1000 | 1000 | Elastic modulus (MPa) | 752 | 816.4 | Poisson’s ratio | 0.45 | 0.45 | Yield stress | 13.25 | 10.22 | Limit strain | 0.134 | 0.134 |
| Tibial cancellous bone | Density (kg/m3) | 1000 | 1000 | Elastic modulus (MPa) | 752 | 591.6 | Poisson’s ratio | 0.45 | 0.45 | Yield stress | 11.04 | 8.24 | Limit strain | 0.134 | 0.134 |
|
|