| Tr-f | the vibration transmission rate-frequency |
| EPP | expanded polypropylene |
| EVA | ethylene vinyl acetate |
| W c | damping energy dissipation |
| F60 | honeycomb paperboard with a thickness of 60 mm |
| E60 | EPE with a thickness of 60 mm |
| F30/E30 | assembly with a thickness of 30 mm for honeycomb paperboard and a thickness of 30 mm for EPE |
| F20/E40 | assembly with a thickness of 20 mm for honeycomb paperboard and a thickness of 40 mm for EPE |
| F40/E20 | assembly with a thickness of 40 mm for honeycomb paperboard and a thickness of 20 mm for EPE |
| F20/E20 | assembly with a thickness of 20 mm for honeycomb paperboard and a thickness of 20 mm for EPE |
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