Author(s): Dianshi Feng; Jin Zhang; Kim Thow Yap; Sze Dai Pang
Linked Author(s):
Keywords: Cohesive element method; Initial stiffness; Additional compliance; Wave propagation; Ice-structure interaction
Abstract: Cohesive element method (CEM) is currently being advanced to improve the simulation accuracy of ice-structure interactions. Cohesive stiffness is an important numerical parameter that affects both the computational cost and prediction accuracy. In this study, the effects of initial cohesive stiffness such as introducing an additional compliance or changing the wave propagation profile in numerical simulations were studied using CEM models constructed in LSDYNA. The influence of cohesive stiffness on the prediction of ice loads was analyzed for both ice flexure and ice crushing failure cases. Recommendations are made accordingly on the initial stiffness of cohesive elements for different ice-structure interaction scenarios to balance between computational cost and accuracy of prediction.
Year: 2018