Research Article
May 1972
Virtual Mass of Submerged Structures
Publication: Journal of the Hydraulics Division
Volume 98, Issue 5
Abstract
A structure submerged in water exhibits different dynamic behavior due to the interaction of the surrounding water than when it vibrates in air. The submerged structure is subjected to additional hydrodynamic pressures and its dynamic characteristics alter when it vibrates in water. Virtual mass concept is increasingly being used in design to account for the influence of surrounding water and this is used indirectly to represent the hydrodynamic pressure. A simple experimental technique for the determination of virtual mass for partially and fully submerged structures is presented herein. The virtual mass depends on the geometry of the structure and its dynamic properties in air. Due to the surrounding water, the natural period of vibration of a structure elongates and the damping increases. Due to the added mass of the surrounding water, the stresses and strains in the structure under dynamic conditions are increased but some relief is provided by the increased damping.
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Published In
Journal of the Hydraulics Division
Volume 98 • Issue 5 • May 1972
Pages: 887 - 896
Copyright
© 1972 American Society of Civil Engineers.
History
Published in print: May 1972
Published online: Feb 3, 2021
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Authors
Affiliations
Anjur R. Chandrasekaran, M.ASCE
Prof. of Structural Dynamics, School of Research and Training in Earthquake Engrg., Univ. of Roorkee, Roorkee, India
S. S. Sani
Lect. of Structural Dynamics, School of Research and Training in Earthquake Engrg., Univ. of Roorkee, Roorkee, India
M. M. Malhotra
Head, Civ. Engrg. Dept., Ajmer Polytechnic, Ajmer, India
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.