| 基于SPH方法的连续式破冰数值模拟 |
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| 引用本文： | 刘亚男,李辉,刘煜文,杨秋霞,杨征.基于SPH方法的连续式破冰数值模拟[J].船舶力学,2017(Z1). |
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| 作者姓名： | 刘亚男 李辉 刘煜文 杨秋霞 杨征 |
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| 作者单位： | 哈尔滨工程大学船舶工程学院,哈尔滨,150001 |
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| 摘 要： | 根据海冰的力学性质,采用光滑粒子流体动力学(SPH)方法建立海冰本构模型,模拟冰锥实验并与实验结果对比,对冰材料模型准确性进行验证.利用显式动力分析软件LS-DYNA模拟破冰船连续式破冰,得到了海冰的损伤变形和破冰阻力,同时研究了船舶航速和海冰厚度等参数对冰载荷的影响.分析研究表明:应用SPH方法建立的海冰模型能够真实的反映海冰的力学性能,对连续式破冰过程实现较为准确的模拟,为船冰碰撞的数值模拟提供了新思路.
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| 关 键 词： | SPH 冰力 数值模拟 冰模型 |
Numerical simulation of the continuous icebreaking based on SPH method |
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| LIU Ya-nan,LI Hui,LIU Yu-wen,YANG Qiu-xia,YANG Zheng.Numerical simulation of the continuous icebreaking based on SPH method[J].Journal of Ship Mechanics,2017(Z1). |
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| Authors: | LIU Ya-nan LI Hui LIU Yu-wen YANG Qiu-xia YANG Zheng |
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| Abstract: | According to the mechanical property of the ice, constitutive model of sea ice is established using SPH. The numerical model is validated by comparing the numerical simulation results with the measured data in compressive cone-shaped ice experiments. The damage,the deformation, and the icebreaking resistance of sea ice is obtained by simulating continuous icebreaking with explicit dynamic analysis software LS-DYNA. At the same time, influence of icebreaker speed and sea ice thickness on ice load is studied. The results show: the numerical model using SPH method can reflect on sea ice the real mechanical properties and simulate the process of continuous icebreaking accurately what supplies new thinking for collision simulation of ship and ice. |
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| Keywords: | SPH ice force numerical simulation ice model |
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