Research Article
Experimental Study of the Effectiveness of Sacrificial Cladding Using Polymeric Foams as Crushable Core with a Simply Supported Steel Beam
Table 3
Loading parameters and dynamic properties for an elastic-plastic, simply supported beam.
| Parameter | Symbol/formula | Values (unit) |
| Peak reflected pressure | | 13.85 (MPa) | Positive phase duration | | 0.324 (ms) | Beam span | | 0.6 (m) | Beam mass | | 1.87 (kg) | Beam thickness | | 5 (mm) | Beam width | | 80 (mm) | Moment of inertia | | 833 (mm4) | Young’s modulus | | 240 (GPa) | Yield strength | | 353.85 (MPa) | Load-mass factor | | 0.49 (—) |
| | | Experimental value | Analytical value |
| Beam stiffness | | 35.5 | 44.4 (kN/m) | Equivalent mass | | 0.92 | 0.92 (kg) | Natural period | | 32 | 29 (ms) | Time ratio | | 9.5 10−3 | 10−2 | Maximum deflection | | 104 | 94 (mm) | Permanent plastic deflection | | 57.57 | 63 (mm) | Maximum resistance | | 1.4 | 1.3 (kN) |
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