Research Article
Mechanical Behavior of Sandwich Panels with Hybrid PU Foam Core
Table 3
Summary of stiffness and strain of GHP specimens.
| | Specimen | ΔP/Δδ (N/mm) | EIex (×1010) (N·mm2) | EIeq (×1010) (N·mm2) | EIeq/EIex | Maximum strain (mm/mm) | | Compressive (%) | Tensile (%) |
| | GHP-CON | 582.73 | 1.92 | 2.88 | 1.50 | 0.17 | 0.25 | | GHP-1-1 | 633.82 | 2.09 | 2.97 | 1.42 | 0.20 | 0.22 | | GHP-2-1 | 603.90 | 2.00 | 3.06 | 1.53 | 0.21 | 0.20 | | GHP-1-2 | 762.85 | 2.53 | 2.98 | 1.18 | 0.22 | 0.24 | | GHP-2-2 | 741.56 | 2.46 | 3.08 | 1.25 | 0.28 | 0.28 | | GHP-2-3 | 863.17 | 2.88 | 3.08 | 1.07 | 0.36 | 0.43 |
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