Verification of Hydroelastic Similitude Criteria

by Otto Haszpra, Head; Hydromechanics Dept., VITUKI (Research Inst. for Water Resources Development), Budapest, Hungary; formerly, Visiting Research Engr., Inst. of Hydraulic Research, Iowa City, Iowa,

Serial Information: Journal of the Hydraulics Division, 1976, Vol. 102, Issue 4, Pg. 469-481

Document Type: Journal Paper


When modeling flow-induced vibrations of hydraulic structures, in most cases the similitude of the inertial, elastic, and gravitational forces must be ensured according to the Froude law, but sometimes the gravitational force can be neglected. The paper treats the most important scale ratios. The systematic experimental verification gives instructions on the applicable geometrical scale and the reliability of the prototype data determined from the model. The error of the frequencies was within —10%, while that of the amplitudes hardly attained -50%. The internal damping of the model material influenced the results, but in comparison with the effect of the water damping it could be neglected.

Subject Headings: Verification | Hydraulic models | Hydraulic structures | Damping | Structural models | Vibration | Inertia | Elastic analysis

Services: Buy this book/Buy this article


Return to search