Numerical simulation of level ice-vertical cylinder collision based on a cohesive element model

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Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (16) : 153-158.

WANG Feng1，ZOU Zaojian1,2，REN Yizhou3

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Abstract

Based on the nonlinear finite element method, a cohesive element model was combined with the linear softening elastoplastic constitutive model to simulate the collision between level ice and a fixed vertical cylinder.The failure mode of level ice and the ice loads on the cylinder during the collision were studied.The simulated results were compared with the practical observations on the ice failure mode in ice sheet-lighthouse collision, and good agreement was achieved.Then the effects of traction-separation law of the cohesive element model and collision velocity on the horizontal ice loads on the cylinder were investigated, respectively.The simulated results show that the traction-separation law has a limited influence on the horizontal ice loads, and the ice loads increase with collision velocity.The growth speed of mean ice loads is slightly higher than linear growth.

Key words

cohesive element model / level ice-cylinder collision / ice failure mode / ice loads

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WANG Feng1，ZOU Zaojian1,2，REN Yizhou3. Numerical simulation of level ice-vertical cylinder collision based on a cohesive element model[J]. Journal of Vibration and Shock, 2019, 38(16): 153-158

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