Effect of tube-support interaction on the vibration of a tube on multiple supports

Technical Report · Sat Jan 01 04:00:00 EST 1977

DOI:https://doi.org/10.2172/7227358· OSTI ID:7227358

Shin, Y S; Jendrzejczyk, J A; Wambsganss, M W

The effects of tube orientation (horizontal/vertical), tube/support misalignment, fluid medium (air/water), tube/support-hole clearance, support thickness, exciting force amplitude, and support spacing on the vibrational characteristics (resonant frequencies, mode shapes, and damping) and displacement response amplitude of a multi-span tube were determined from thirteen different tests. The test model features a 15.875 mm (0.625 in.) dia x 3.175 mm (0.125 in.) thick x 5.232 m (206 in.) long seamless Croloy (2-/sup 1///sub 4/% Cr--1% Mo) tube, and combinations of four support thicknesses (12.70 mm (/sup 1///sub 2/ in.), 19.05 mm (/sup 3///sub 4/ in.), 38.10 mm (1/sup 1///sub 2/ in.), and 50.80 mm (2 in.)) and three sizes of diametral clearance of tube/support-hole (0.254 mm (10 mils), 0.508 mm (20 mils), and 0.762 mm (30 mils)). The test results were compared with the analytical results based on the multi-span beam with ''knife-edge'' supports.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 7227358
• Report Number(s): ANL-CT-77-5
• Country of Publication: United States
• Language: English

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