A numerical study on ice failure process and ice-ship interactions by Smoothed Particle Hydrodynamics

• Main Authors: Ningbo Zhang, Xing Zheng, Qingwei Ma, Zhenhong Hu
• Format: Article
• Language: English
• Published: Elsevier 2019-07-01
• Series: International Journal of Naval Architecture and Ocean Engineering
• Online Access: http://www.sciencedirect.com/science/article/pii/S2092678218302371

In this paper, a Smoothed Particle Hydrodynamics (SPH) method is extended to simulate the ice failure process and ice-ship interactions. The softening elastoplastic model integrating Drucker-Prager yield criterion is embedded into the SPH method to simulate the failure progress of ice. To verify the accuracy of the proposed SPH method, two benchmarks are presented, which include the elastic vibration of a cantilever beam and three-point bending failure of the ice beam. The good agreement between the obtained numerical results and experimental data indicates that the presented SPH method can give the reliable and accurate results for simulating the ice failure progress. On this basis, the extended SPH method is employed to simulate level ice interacting with sloping structure and three-dimensional ice-ship interaction in level ice, and the numerical data is validated through comparing with experimental results of a 1:20 scaled Araon icebreaker model. It is shown the proposed SPH model can satisfactorily predict the ice breaking process and ice breaking resistance on ships in ice-ship interaction. Keywords: SPH, Ice failure, Ice-ship interaction, Ice breaking resistance, Level ice