Research Article
Vibration Analysis of Composite Multilayer Floor of High-Speed Train
Table 1
Test and calculation results of mechanical properties of composite multilayer panels.
| | Material code | Panel material | Core material | Panel thickness (mm) | Density (t/mm3) | Bending stiffness (N·mm2) | Shear stiffness (N) | Panel elastic modulus (MPa) | Core shear modulus (MPa) | Flat modulus (MPa) |
| | 1 | Aluminum | Birch | 0.5 | 1.07e − 09 | 6.78e8 | 1.26e5 | 6.32e4 | 95.4 | 206 | | 2 | 0.8 | 1.08e − 09 | 6.22e8 | 1.51e5 | 4.15e4 | 115 | 280 | | 3 | 1.0 | 1.10e − 09 | 7.60e8 | 1.57e5 | 4.33e4 | 118 | 196 | | 4 | 1.5 | 1.12e − 09 | 8.27e8 | 3.74e4 | 3.74e4 | 94.8 | 339 | | 5 | Alder | 0.5 | 7.67e − 10 | 3.59e8 | 6.56e4 | 3.54e4 | 51.0 | 169 | | 6 | 0.8 | 8.62e − 10 | 3.79e8 | 7.52e4 | 2.63e4 | 58.1 | 167 | | 7 | 1.0 | 8.71e − 10 | 3.91e8 | 8.20e4 | 2.29e4 | 62.6 | 169 | | 8 | 1.5 | 8.99e − 10 | 3.81e8 | 8.17e4 | 1.74e4 | 61.6 | 193 |
| | 9 | Stainless steel | Birch | 0.5 | 1.44e − 09 | 1.03e9 | 1.54e5 | 9.84e4 | 117.0 | 254 | | 10 | 0.8 | 1.61e − 09 | 1.04e9 | 1.59e5 | 7.02e4 | 121.0 | 253 | | 11 | 1.0 | 1.69e − 09 | 1.10e9 | 1.68e5 | 6.28e4 | 127.0 | 284 | | 12 | 1.5 | 1.88e − 09 | 9.42e8 | 1.59e5 | 4.27e4 | 119.0 | 255 | | 13 | Alder | 0.5 | 1.28e − 09 | 4.41e8 | 8.55e4 | 4.33e4 | 66.0 | 129 | | 14 | 0.8 | 1.38e − 09 | 4.92e8 | 9.07e4 | 3.36e4 | 69.3 | 168 | | 15 | 1.0 | 1.42e − 09 | 4.98e8 | 8.34e4 | 2.91e4 | 63.2 | 201 | | 16 | 1.5 | 1.62e − 09 | 4.91e8 | 8.48e4 | 2.29e4 | 64.8 | 125 |
|
|
