Session: 07-05-01 Ice Model Tests

Paper Number: 79014

79014 - HSVA Model Ice – A Status Report 

The development of HSVA’s current standard model ice dates back to 1993 when Evers and Jochmann introduced a new production process. Since that time, a lot of experience has been gained in numerous ice sheets, regarding both, the process of production itself and the properties of the resulting model ice. Meanwhile, requirements on ice model tests, and also on the model ice itself, have changed during the past decades. This relates to more diversified test types, which do not only concentrate on ice-breaking ships with typical flat bows, but also on a variety of structures and hull designs that include different failure modes. Also, the typical property range of model ice regarding strength and thickness has significantly widened. This paper summarizes the changes that have been made over the years, leading to the standard model ice that is available at HSVA today. Its properties are presented and discussed, showing limitations regarding absolute property values and their uncertainty, as well as the ability for correct representation of specific interaction scenarios. Further, methods to modify the model ice for different specific test scenarios are suggested and discussed. This includes for instance tests on wave-ice interaction or global and local crushing against vertical structures.

Presenting Author: Quentin Hisette HSVA

Authors:

Gesa Ziemer HSVA
Timo Stange HSVA
Quentin Hisette HSVA