Experimental System for Understanding the Physics of Flexible Plate Impact on waves
Abstract
Understanding the physics of the impact of planing boats on waves is important for highspeedboat design and operations because the effects of the highly transient structural loading canbe detrimental to the health of the boat occupants and the boat structure it self. In order to gain adetailed understanding of the impact process, we are continuing our study of a fundamentalcomponent of the problem: the controlled high-speed impact of nearly rigid and flexible plates ona water surface. The work to build the towing tank facility for this research program and toperform the first experiments on rigid and flexible plate impact on a still water surface was fundedby several completed ONR grants (N000141310587, Scientific Officer: Dr. Steven Russell;N000141612619, Scientific Office r: Dr. Steven Russell; and N000141612748, Scientific Officer:Dr. Robert Brizzolara) and is funded by one current ONR grant (N00014- 20-1-2349, ScientificOfficer: Dr. Robert Brizzolara). The towing tank is 13.7 m long, 2.4 m wide and 1.3 m deep andthe plate model (typically 1.0 m long) is attached to a two-axis carriage system with horizontaland vertical speeds up to 10 m/s and 2.5 m/s, resp ectively. The data is collected and analyzed withan eye toward mitigating the maximum pressures and forces on the plate; mitigating the sprayproduced; determining the vibration of the plate; and providing highly accurate data for use byresearchers developing co mputer codes for the prediction of fluid-structure interactionphenomena. In this proposal, we request funds to purchase a wave make r for the towing tank, sothat impact on a wavy water surface can be explored, and for systems to measure the plate andwater surfac e motions as well as the pressure and strain distribution on the plate. (This abstract ispublicly releasable.)
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Oct 22, 2021
- Source ID
- N000142112934
Entities
People
- James S Duncan
Organizations
- Office of Naval Research
- United States Navy
- University of Maryland