Investigation of critical ice floe and iceberg shapes for full scale ship ice collision simulations
Abstract
This project will investigate the icestructure interaction behavior of different ice shapes experimentally and numerically. The res,ults will allow to define the worstcase load cases for direct simulations of ship ice-interaction. For the simulations, the Mohr Co,ulomb-based nodel splitting ice model (MCNS) will be further validated for general icestructure interaction simulations. These full,y coupled numerical icestructure interaction simulations will however be computationally expensive, yet very useful for the simulat,ion and the design of accidental loads or to investigate structural limits. For a more rapid decision making or realtime applicatio,ns, this project seeks to develop the novel concept of the Ice Load Response Operator (RILO) as an analogous approach to the RAO fo,r openwater to allow for rapid assessments. The general objectives are:*Adapt and develop the MCNS ice model for fullscale shipic,e collisions. The development of the MCNS model started in the Grant N629091812127. *Develop icestructure coupling techniques a,nd pressure evaluation methods to gain meaningful numerically generated ice pressure distributions. *Identify critical ice geometri,es through numerical and experimental investigations of drop tests. *Realization of numerical simulations of fullscale shipice co,llisions with critically shaped ice features (ice floes and icebergs). Hydrostatic and hydrodynamic effects will be taken into acco,unt in a simplified form. *Identify critical impact scenarios and ice feature geometries for icebergs and large ice floes. *Proof,of concept of the Response Ice Load Operator (RILO)
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 08, 2022
- Source ID
- N629092212019
Entities
People
- Sren Ehlers
Organizations
- Hamburg University of Technology
- Office of Naval Research
- United States Navy