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Continue to ChatFREE VIBRATION ANALYSIS OF HELICOIDAL BARS WITH THIN-WALLED CIRCULAR TUBE CROSS-SECTION VIA MIXED FINITE ELEMENT METHOD - https://avesis.itu.edu.tr/yayin/f54ee2ca-300c-4894-a177-6975e60be885/free-vibration-analysis-of-helicoidal-bars-with-thin-walled-circular-tube-cross-section-via-mixed-finite-element-method