Experimental Evaluation and Validation of Pressure Distributions in Ice–Structure Collisions Using a Pendulum Apparatus

• Published in: Journal of Marine Science and Engineering
• Main Authors: Ho-Sang Jang, Se-Yun Hwang, Jang Hyun Lee
• Format: Article in Journal/Newspaper
• Language: English
• Published: MDPI AG 2023
• Subjects: ice impact; double-pendulum-based apparatus; ice collision force; pressure distribution on ice collision; Naval architecture. Shipbuilding. Marine engineering; VM1-989; Oceanography; GC1-1581; Arctic
• Online Access: https://doi.org/10.3390/jmse11091761; https://doaj.org/article/e4179d548c6a4df28f171533a7e10302

This study introduced an experimental setup designed to predict collision pressure exerted on a structure due to ice impacts. The primary aim was to forecast the pressure distribution and structural behavior following an ice collision on a laboratory scale. The apparatus comprises a double-pendulum system situated within a cold chamber, facilitating the prediction of collision forces by varying both the collision energy and velocity. Experiments were conducted at collision velocities of 5, 7, and 10 knots, representative of conditions in Arctic regions. By altering these velocities, we measured both the strain experienced by a steel plate and the pressure due to the ice collision. The pressure distribution on the steel plate surface was also recorded by using pressure-sensitive film. This setup effectively captured the pressure distribution across the collision contact area. The measured pressure and force were compared with that of previous studies to determine the validity of the ice collision force measurement. This methodology successfully captures the relationship between the increasing collision speed and force, providing valuable insights into ice-induced forces and structural strain. It offers an effective measurement technique beneficial for designing ice-resistant structures. In conclusion, this paper enhances our understanding of ice–structure interactions, particularly in the domains of collision force and strain metrics.