不同敏感性参数下船舶-碎冰碰撞的船体结构响应

基于我国第七次北极科学考察获得的夏季北极海冰空间分布情况，模拟真实碎冰分布，采用LS-DYNA软件中的流固耦合方法，研究在船舶航速、碎冰尺度、碎冰厚度及碎冰密集度等因素影响下船舶-碎冰碰撞的船体结构响应。结合试验数据得到船体结构的应力、吸能和碰撞力。结果表明：船舶-碎冰的主要碰撞区域为艏部及舷侧的水线附近；在船舶航行于碎冰域时，船体结构的应力、吸能和碰撞力的峰值随碎冰域的船舶航速、碎冰尺度、碎冰厚度及碎冰密集度的增加而增加，但分布情况不同。研究结果为船舶在极地冰区航行提供一定的安全性参考。

Hull Structure Response to Collision of Ship and Broken Sea Ice Under Different Sensitivity Parameters

Based on the spatial distribution of summer Arctic sea ice obtained by China seventh Arctic scientific expedition, the ship hull structure response to the collision of ship and broken sea ice under the influence of ship speed, broken sea ice size, broken sea ice thickness, and broken sea ice density is studied with the fluid-structure interaction method in the LS-DYNA software by simulating the real ice distribution. Combined with the test data, the stress, energy absorption, and collision force of hull structure are obtained. The results show that: the main collision area of ship and broken sea ice is near the waterline of bow and sides; when the ship sails through the broken sea ice field, the peak values of stress, energy absorption, and collision force of hull structure increase with the increase of ship speed, broken sea ice size, broken sea ice thickness, and broken sea ice density in the broken sea ice field, but the distribution circumstances are different. The research results provide certain safety reference for ships sailing in the polar ice region.