Resonance-like phenomena in a submerged cylindrical shell subjected to two consecutive shock waves: The effect of the inner fluid |
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| Affiliation: | 1. Department of Engineering Mathematics and Internetworking, Dalhousie University, Halifax, Nova Scotia, Canada;2. Institute of Fluid Mechanics and Heat Transfer, Vienna University of Technology, Vienna, Austria;3. Department of Mechanical Engineering, Dalhousie University, Halifax, Nova Scotia, Canada;4. Instituto Universitario di Studi Superiori di Pavia, Pavia, Italy;1. Research Center for Wind Engineering and Engineering Vibration, Guangzhou University, Guangzhou 51006, China;2. School of Civil, Environmental and Mining Engineering, The University of Adelaide, SA 5005, Australia |
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| Abstract: | A submerged fluid-filled cylindrical shell subjected to a sequence of two shock waves originated at the same source is considered. It is demonstrated that, unlike in the case of a submerged evacuated shell, there exists a certain critical range of the values of the delay between the incident wavefronts where both the peak compressive and the peak tensile stress observed in the structure are significantly (60% or more) higher than the respective stresses in the same system subjected to a single-front loading. It is further demonstrated that the highest and the lowest hydrodynamic pressure attained in the system is also dramatically affected for certain values of the delay between the incident wavefronts, with the maximum double-front pressure being more than 30% higher than its single-front counterpart. The practical relevance of the findings is discussed in the context of the pre-design analysis of industrial systems subjected to shock loading. |
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| Keywords: | Fluid–structure interaction Shock–structure interaction |
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