Research Article
Impact Behavior of a Laterally Loaded Guardrail Post near Slopes by Hybrid SPH Model
Table 1
Modified material parameters in the FHWA soil model.
| Variables | Description | Values |
| RO | Mass density of soil | 2.35 × 10−6 kg/mm3 | NPLOT | Plotting option | 3 | SPGRAV | Specific gravity of soil | 2.79 | RHOWAT | Density of water | 1.0 × 10−6 kg/mm3 | VN | Viscoplastic parameter | 1.1 | K | Soil’s bulk modulus | 11.766 MPa | G | Soil’s shear modulus | 7.06 MPa | PHIRES | Minimum internal friction angle | 0.9 radian | INTRMX | Maximum number of plasticity iterations | 10 | MCONT | Moisture content of soil | 0.034 | ECCN | Eccentricity parameter for third invariant effects | 0.7 | COH | Cohesion or shear strength at zero confinement | 6.2 × 10−3 MPa |
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