Research Article
Simulation and Optimization of Acoustic Package of Dash Panel Based on SEA
Table 3
Acoustic cover material parameters.
| | Material | Density (kg/m3) | Tensile modulus (Pa) | Poisson’s ratio | Loss coefficient | Porosity | Curvature | Fluid resistivity (N.s/m4) |
| | Cast foam | 22 | 6.5e + 4 | 0.4 | 0.15 | 0.94 | 1.3 | 2.6e + 4 | | Felt | 50 | — | — | — | 0.92 | 1.5 | 4.5e + 4 | | PU foam | 22 | 4.65e + 4 | 0.4 | 0.14 | 0.96 | 1.24 | 5000 | | EVA | 1670 | 2.1e + 9 | 0.4 | — | — | — | — |
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