Research Article
Development of a New Cracked Mindlin Plate Element
Table 4
Error comparison of natural frequency for mesh.
| | | First mode | Second mode | Third mode | | | | | | |
| | S4 | 0.0098 | 0.0101 | 0.0397 | 0.0404 | 0.0428 | 0.0440 | S4R | 0.0072 | 0.0075 | 0.0353 | 0.0360 | 0.0316 | 0.0328 | STRI3 | 0.0015 | 0.0013 | 0.0053 | 0.0047 | 0.0113 | 0.0101 | MP4 | 0.0016 | 0.0013 | 0.0256 | 0.0263 | 0.0224 | 0.0236 |
| | S4 | 0.0137 | 0.0068 | 0.0073 | 0.0249 | 0.0085 | 0.0191 | S4R | 0.0160 | 0.0091 | 0.0037 | 0.0212 | 0.0176 | 0.0097 | STRI3 | 0.0035 | 0.0035 | 0.0016 | 0.0158 | 0.0188 | 0.0085 | MP4 | 0.0100 | 0.0029 | 0.0032 | 0.0142 | 0.0265 | 0.0006 |
| | S4 | 0.0586 | 0.0324 | 0.0643 | 0.0005 | 0.1119 | 0.0168 | S4R | 0.0606 | 0.0344 | 0.0671 | 0.0035 | 0.1184 | 0.0240 | STRI3 | 0.0111 | 0.0392 | 0.0248 | 0.0417 | 0.0413 | 0.0613 | MP4 | 0.0582 | 0.0321 | 0.0642 | 0.0004 | 0.1107 | 0.0155 |
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α: Error to thin theory, β: Error to thick theory.
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