Research Article
Free Vibration of Laminated Composite Hypar Shell Roofs with Cutouts
Table 2
Values of “
” for 0/90/0/90 hypar shell.
| Boundary conditions | Cutout size () | 0 | 0.1 | 0.2 | 0.3 | 0.4 |
| CCCC | 0 | −1.56 | −5.48 | −10.01 | −12.94 | CSCC | 0 | −0.9 | −3.87 | −14.97 | −22.62 | CCSC | 0 | −0.99 | −5.88 | −16.04 | −23.3 | CCCS | 0 | −0.9 | −4.33 | −15.42 | −22.76 | CSSC | 0 | −1.12 | −8.24 | −20.47 | −30.27 | CCSS | 0 | −1.12 | −8.24 | −20.47 | −30.27 | CSCS | 0 | 0.38 | −1.67 | −4.16 | −4.21 | SCSC | 0 | 0.38 | −1.71 | −4.29 | −4.43 | CSSS | 0 | 0.3 | −1.05 | −3.35 | −5.53 | SSSC | 0 | 0.3 | −1.09 | −3.45 | −5.74 | SSCS | 0 | 0.33 | −1.06 | −3.35 | −5.54 | SSSS | 0 | 0.23 | −0.63 | −2.92 | −6.08 |
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, , , ; / = 25, = 0.2, = = 0.5, .
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