Research Article
Study of Dynamic Behavior of Multilayered Clamped Composite Skewed Hypar Shell Roofs under Impact Load
Table 1
Nondimensional natural frequencies
for a three-layer graphite epoxy twisted plate.
| Angle of twist (deg) | 0 | 15 | 30 | 45 | 60 | 75 | 90 |
| | | | | | | | | Qatu and Leissa [17] | 1.0035 | 0.9296 | 0.7465 | 0.5286 | 0.3545 | 0.2723 | 0.2555
| Present formulation |
0.9990 | 0.9257 | 0.7445 | 0.5279 | 0.3542 | 0.2720 | 0.2551 | | | | | | | | | Qatu and Leissa [17] | 0.9566 | 0.8914 | 0.7205 | 0.5149 | 0.3443 | 0.2606 | 0.2436 | Present formulation | 0.9490 | 0.8842 | 0.7181 | 0.5142 | 0.3447 | 0.2613 | 0.2444 |
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GPa, GPa, GPa, , , .
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