基于非线性有限元法的船舶冰区破冰数值模拟

应用非线性有限元法进行了破冰船冰区破冰数值模拟。通过比较数值模拟结果和试验结果，对冰体材料模型进行了验证；采用该冰体材料模型，对破冰船以不同航速在不同厚度的层冰中破冰航行时的动态响应进行了数值研究，给出了破冰过程中层冰的变形、冰力的大小以及冰的变形能和动能变化，分析了船速、冰层厚度对破冰阻力的影响。该研究结果对分析破冰船在层冰中破冰时的动态响应特性具有一定的参考价值。

Numerical Simulation of Ship Icebreaking in Level Ice based on Nonlinear Finite Element Method

Numerical simulation of an icebreaker advancing in level ice is carried out by using the nonlinear finite element method. An ice material model is verified by comparing the simulation re-sults with experimental data. Using the ice material model, the dynamic response of the ship during icebreaking in level ice of different thicknesses at different speeds is numerically studied. The de-formations of level ice, the magnitudes of ice force, the changes of ice deformation energy and ki-netic energy during the icebreaking process are presented, and the influences of the ship speed and level ice thickness on the icebreaking resistance are analyzed. The results have a certain reference value for analyzing the dynamic response of an icebreaker in level ice.