Research Article
FE-Meshfree QUAD4 Element with Modified Radial Point Interpolation Function for Structural Dynamic Analysis
Table 6
Natural frequencies (×104 Hz) of a cantilever beam for 250 elements.
| | Number of elements | Number of nodes | FEM-QUAD4 | FE-Meshfree (QS, ) | FE-Meshfree (MQ, ) | FE-Meshfree (MQ, ) | FE-Meshfree (Exp, ) | FE-Meshfree (Exp, ) | Reference (ABAQUS Quad8) |
| | (50 × 5) 250 | 306 | 0.0830 | 0.0823 | 0.0822 | 0.0831 | 0.0852 | 0.0827 | 0.0822 | | 0.4989 | 0.4937 | 0.4936 | 0.4986 | 0.5104 | 0.4962 | 0.4931 | | 1.2827 | 1.2826 | 1.2826 | 1.2827 | 1.2828 | 1.2825 | 1.2823 | | 1.3168 | 1.3010 | 1.3005 | 1.3127 | 1.3421 | 1.3063 | 1.2990 | | 2.3992 | 2.3655 | 2.3640 | 2.3839 | 2.4343 | 2.3726 | 2.3607 | | 3.6701 | 3.6094 | 3.6064 | 3.6331 | 3.7057 | 3.6165 | 3.6002 | | 3.8467 | 3.8450 | 3.8449 | 3.8448 | 3.8449 | 3.8445 | 3.8442 | | 5.0697 | 4.9716 | 4.9667 | 4.9984 | 5.0934 | 4.9765 | 4.9566 | | 6.4062 | 6.3984 | 6.3983 | 6.3965 | 6.3955 | 6.3971 | 6.3897 | | 6.5590 | 6.4116 | 6.4043 | 6.4391 | 6.5558 | 6.4121 | 6.3972 | | 8.1119 | 7.9019 | 7.8918 | 7.9274 | 8.0652 | 7.8957 | 7.8719 | | 8.9562 | 8.9347 | 8.9348 | 8.9290 | 8.9251 | 8.9320 | 8.9331 |
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