Floating ice can be damaged by the bubble loads generated by releasing high-pressure gas underwater using an air-gun, so ice-breaking by underwater high-pressure bubble loads is becoming one of the effective ice-breaking technologies. A numerical model was established to study the motion and damage of floating ice subjected to high-pressure bubble loads. Empirical formulas were used to calculate the initial shock wave load. The boundary element method (BEM) was used to simulate the bubble motion and second shock wave load/jet impact load of the underwater bubble under the ice plate, during which the Green's formula was used. The potential flow theory was used to solve kinematic and dynamic problems during the bubble motion process. A breakable floating ice plate was established based on peridynamics (PD). A coupling scheme was proposed to solve the load transfer problem between BEM and PD. The numerical results of the bubble motion stage and the ice-breaking stage were in good agreement with the literature results. The motion response of floating ice was obtained and analyzed. Focusing on studying the damage process of the floating ice, the influence of bubble initial internal pressure and ice mechanical parameters (Young's modulus) were studied. Results showed that the dimensionless distance parameter H, dimensionless ice thickness parameter T, and ice mechanical parameters cause significant effect on ice damage. This study provided a numerical model for ice-breaking by high-pressure bubble loads, which may provide reference for parameter optimization design and help to guide the engineering application.

中文翻译：

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高压气泡载荷对浮冰损伤的数值研究


使用气枪在水下释放高压气体产生的气泡载荷会破坏浮冰，因此通过水下高压气泡载荷破冰正在成为有效的破冰技术之一。建立了一个数值模型，研究了浮冰在高压气泡载荷下的运动和损伤。使用经验公式计算初始冲击波载荷。边界元法 （BEM） 用于模拟冰板下水下气泡的气泡运动和第二冲击波载荷/射流冲击载荷，期间使用了格林公式。利用势流理论解决气泡运动过程中的运动学和动力学问题。基于近场动力学 （PD） 建立了可破碎的浮冰板。提出了一种耦合方案来解决边界元法和局部放电之间的载荷传递问题。气泡运动阶段和破冰阶段的数值结果与文献结果吻合较好。获得并分析了浮冰的运动响应。重点研究了浮冰的损伤过程，研究了气泡初始内压和冰力学参数（杨氏模量）的影响。结果表明，无量纲距离参数 H、无量纲冰厚度参数 T 和冰力学参数对冰损伤有显著影响。本研究为高压气泡载荷破冰提供了数值模型，可为参数优化设计提供参考，有助于指导工程应用。