Accession Number:

ADA139542

Title:

Dynamic Response of an Ice-Breaker Hull to Ice Breaking

Descriptive Note:

Final rept. Aug 1982-Feb 1984

Corporate Author:

IOWA INST OF HYDRAULIC RESEARCH IOWA CITY

Personal Author(s):

Report Date:

1984-02-01

Pagination or Media Count:

134.0

Abstract:

Experiments were conducted with the objective of studying the behavior of an ice-breaker hull moving continuously through an ice sheet. Of particular interest was the interaction of ice forces exerted against the hull and the hulls pitching motion. A 148-scale model hull of the USCGC Polar Star WAGB10 was used in the study. The model hull was towed by a towing carriage. The dynamic response of the model hull to ice breaking was used to infer the vertical component of the ice forces exerted against the hull to evaluate the temporal variation of the hulls buoyancy and pitching moment and, to evaluate the inertial force components of the hulls motion. Examination of the dynamic response of the model hull required computer-based acquisition of temporal records of its pitch and draft as well as it vertical and angular accelerations. Time series analyses of the temporal records were performed.

Subject Categories:

  • Snow, Ice and Permafrost
  • Marine Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE