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Acta Armamentarii ›› 2025, Vol. 46 ›› Issue (5): 240358-.doi: 10.12382/bgxb.2024.0358

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Numerical Study on Ice-breaking Load Characteristics of Underwater Vehicles

ZHAO Jie1, CAI Xiaowei2, WU Xiangqing1, JIAO Yanmei3, ZHANG Jun1,*(), HUANG Da1   

  1. 1 College of Aeronautics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, Jiangsu, China
    2 Key Laboratory of Hydrodynamics, China Ship Scientific Research Center, Wuxi 214082, Jiangsu, China
    3 School of Physical and Mathematical Sciences, Nanjing Tech University, Nanjing 211816, Jiangsu, China
  • Received:2024-05-10 Online:2025-05-07
  • Contact: ZHANG Jun

Abstract:

The launching mechanism of submarine-launched missiles under polar underwater environments is studied. The Arbitrary Lagrangian-Eulerian (ALE) method and the smoothed particle hydrodynamics (SPH) method are used to establish the fluid and infinite whole ice models, respectively, based on finite element software, and a plastic compressive tension material model with equation of state is used to reproduce the sensitivity of mechanical properties of ice to stain rate. Consequently, a fluid-structure interaction model of underwater vehicle ice-breaking is built. Based on the validated key numerical methods, the load and collision force characteristics of underwater vehicle under different ice thicknesses and vehicle speed conditions are investigated by simulation. and the stress distributions of vehicle and ice in the process of ice-breaking are analyzed. The result shows that the load and interaction time imposed on the vehicle increase with the increase in ice thickness, and with the increase in vehicle speed, the loads imposed on the vehicle increase, and the interaction time decreases.

Key words: submarine-launched missile, breaking ice out of water, fluid-structure interaction, impact load, smoothed particle hydrodynamics

CLC Number: