Mechanical behavior assessment of dynamic ice forces using FE method: Interaction with an idealized offshore structure

Dynamic interaction between sea ice and offshore structures is a critical factor in design for operations in cold regions. This study investigates ice impact through numerical simulation to provide information relevant to offshore structural design. A finite element model was developed to simulate the collision between an ice sheet and a conical structure, with ice velocity as the primary parameter. The calculations were carried out using an explicit dynamics approach, which enables the simulation of time-varying impact forces. The results indicate that higher ice velocities result in greater stress within the ice sheet, generating larger reaction forces on the structure, with the increase following a nonlinear trend. These findings provide quantitative insight into the magnitude of loads that may be transmitted to offshore structures, underscoring the importance of accounting for dynamic ice forces in structural design.

Subjects

explicit dynamics

finite element analysis

ice impact

offshore structures

Sea ice

DDC Class

623: Military Engineering and Marine Engineering

551: Geology, Hydrology Meteorology

Lizenz

https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication version

publishedVersion

Name

1-s2.0-S245232162600260X-main.pdf

Type

Main Article

Size

1.62 MB

Format

Adobe PDF

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Mechanical behavior assessment of dynamic ice forces using FE method: Interaction with an idealized offshore structure