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Table 3 Natural frequencies of the long stringer in different modes

From: Residual Stress Relaxation of Thin-walled Long Stringer Made of Aluminum Alloy 7050-T7451 under Transportation Vibration

ModeNatural frequency (Hz)ModeNatural frequency (Hz)
19.042712123.90
213.50013150.95
323.47714151.06
428.90515154.78
534.25416156.76
639.06517171.93
757.78218175.68
861.19019178.29
964.26320189.55
10103.5921199.43
11113.0322204.29