Dynamic stability of liquid-filled cylindrical shells under horizontal excitation,part I: Experiment |
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| Affiliation: | 1. Department of Urology, University of Texas MD Anderson Cancer Center, Houston, TX;2. Department of Urology, Louisiana State University, New Orleans, LA;3. Department of Urology, Barretos Cancer Hospital, Barretos, Brazil;1. State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116023, China;2. School of Physics and Electronics, Central South University, Changsha 410083, China |
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| Abstract: | Experimental studies have been carried out on the dynamic stability of a cantilever cylindrical shell partially filled with liquid, under horizontal excitation. The test cylinder was harmonically excited with constant acceleration or displacement amplitude. It was found that a combination instability resonance of sum type could occur, involving two natural vibrations with the same axial mode of vibration number but with the circumferential wave numbers differing by one. By varying the dimensionless water height from 0 to 1·0 stepwise by 0·25 increments, the instability regions and vibration modes were determined for two polyester test cylinders. The response waves, axial and circumferential vibration modes, and behavior of the free liquid surface were also observed. |
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