Evolution of spatial distribution of ship-ice collision load based on model tests
SUN Jianqiao1,2, HUANG Yan1,3
1.State Key Lab of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300350, China;
2.School of Civil Engineering, Tianjin University, Tianjin 300350, China;
3.Tianjin Municipal Key Lab of Port and Ocean Engineering, Tianjin University, Tianjin 300350, China
Abstract：A series of model-scale ship-ice glancing impact tests was conducted in ice tank to investigate the global spatial migration and local spatial distribution of ship-ice impact loads. According to the test results, the ice loading trail on the ship hull during ship-ice impact was found to be parabolic, and there was a dynamic “single to double” high-pressure zone transformation during a “peak to trough” cycle in the load fluctuations. Larger ice loads were found existed only under “single high-pressure zone” pattern. Based on the concept of using several load patches to cover the ice loading trail, an approach to generalized migrating ice load was proposed. The load histories on adjacent patches were set to be overlapped to achieve a better simulation on the load migration, and the non-uniform ice pressures on each patch were fitted with Gaussian function.
孙剑桥1,2，黄焱1,3. 基于模型试验的船-冰碰撞载荷空间分布演变历程研究[J]. 振动与冲击, 2021, 40(5): 16-23.
SUN Jianqiao1,2, HUANG Yan1,3. Evolution of spatial distribution of ship-ice collision load based on model tests. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(5): 16-23.
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