Accession Number : AD0712995

Title :   VIBRATION OF A FLOATING ICE SHEET.

Descriptive Note : Research rept.,

Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H

Personal Author(s) : Nevel,Donald E.

Report Date : AUG 1970

Pagination or Media Count : 13

Abstract : The solution for the vibration of an elastic plate floating on water is developed. The water is assumed to be incompressible and to have irrotational flow. In free vibration upon release of the plate, the maximum negative rebound of the deflection is 25%. For forced vibration, the steady state part of the solution shows that there is a frequency at which the deflection is a maximum. The stresses become a maximum at a frequency higher than the one for deflection. These critical frequencies depend upon the plate's characteristic length and the depth of the water. For most situations the critical frequency for stress is less than 0.2 cycle per second. At this critical frequency the stresses are amplified over the static case by a factor less than 10%. (Author)

Descriptors :   (*ICE, VIBRATION), ELASTIC PROPERTIES, FLOATING BODIES, DEFLECTION, MATHEMATICAL PREDICTION, DIFFERENTIAL EQUATIONS, STRESSES, SEA ICE

Subject Categories : Snow, Ice and Permafrost
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE