Breaking characteristics of ice cover and dynamic ice load on upward–downward conical structure based on DEM simulations

Xue, Long; Liu, Shewen; Ji, Shunying

doi:10.1007/s40571-020-00331-8

Cited by 14 publications

(5 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Prediction of the ice load on man-made structures, such as vessels, offshore structures, lighthouses, etc., is of particular concern for the structural design and Maintenance 2 . Many studies have been conducted to obtain the ice load on column structures and conical structures subjected to level ice [3][4][5][6][7][8] . ISO199006 shows the design method of ice load based on vertical structure and inclined structure.…”

mentioning

confidence: 99%

Numerical study of ice loads on different interfaces based on cohesive element formulation

Xing,

Cong,

Ling

et al. 2023

Sci Rep

View full text Add to dashboard Cite

With the increase of marine activities in the Arctic area, the demand for reliable design of marine structures is growing. Numerous publications can be found regarding simulations of ice action on structures using cohesive element models of the ice. However, previous studies have rarely discussed the influence of structural form, that is, the form of ice-structure interaction interface, on the ice load. Thus, a more comprehensive understanding of the ice load on structures with different interface geometries needs to be explored. In the present paper, three-dimensional finite element models with the cohesive element method are developed to investigate the ice load on different structures. The numerical results are validated based on in-situ testing data and the results of the previous numerical model. Parametric studies considering structure widths, inclination angles, ice velocity as well as structure roughness are conducted to explore the horizontal force and failure process of the ice sheet. The process of ice-structure interaction and ice loads on different structural forms were discussed and simplified diagrams of ice load distribution on the interface were developed.

show abstract

mentioning

confidence: 99%

Numerical study of ice loads on different interfaces based on cohesive element formulation

Xing,

Cong,

Ling

et al. 2023

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Nonetheless, simulation tools were applied to investigate the mechanical behavior of ice. For instance, the finite element model (FEM) was used for the high dynamic behavior of ice [ 10 ], the interaction between ship structure with broken ice by the elastic ice model [ 11 ], or the discrete element method (DEM) used for interaction between a conical structure with sea ice in the arctic region [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Microscale Modeling of Frozen Particle Fluid Systems with a Bonded-Particle Model Method

et al. 2022

View full text Add to dashboard Cite

An inventive microscale simulation approach is applied to investigate the mechanics of frozen particle fluid systems (PFS). The simulation is based on the discrete element method (DEM) and bonded-particle model (BPM) approach. Discrete particles connected by solid bonds represent frozen agglomerates. Uniaxial compression experiments were performed to gather data for material modeling and further simulation model validation. Different typical mechanical behavior (brittle, ductile, dilatant) were reviewed regarding strain rates, saturation levels, and particle mechanical or surface properties. Among all these factors, strain rate significantly affects the mechanical behavior and properties of the agglomerates. A new solid bond model considering strain-dependent and time-dependent behavior is developed for describing the rheology of the frozen particle fluid systems. Without alternating Young’s modulus and Poisson’s ratio of the bond material, the developed solid model provides a suitable agreement with the experimental results regarding different strain rates.

show abstract

“…In the DEM, large deformations and discontinuous properties of ice can be modeled using the movement of individual ice blocks within it [33]. In addition, owing to its good performance in modeling the continuous breakage of ice, DEM has wide applications in ice engineering, e.g., ice ridge property experiments [34,35], interaction of ice with ships [36][37][38], and offshore structures [39][40][41][42]. Furthermore, the coupled FEM-DEM or FDEM provides a new alternative for analyzing the breaking process, in which the FEM is used to calculate the deformation of individual particles, while DEM is used for modeling the contact and movement of the particles or fragments [43,44].…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Ice Rubble with a Freeze-Bond Model in Dilated Polyhedral Discrete Element Method

Zhai¹,

Liu²,

Ji³

2022

Computer Modeling in Engineering &Amp; Sciences

Self Cite

View full text Add to dashboard Cite

Freezing in ice rubble is a common phenomenon in cold regions, which can consolidate loose blocks and change their mechanical properties. To model the cohesive effect in frozen ice rubble, and to describe the fragmentation behavior with a large external forces exerted, a freeze-bond model based on the dilated polyhedral discrete element method (DEM) is proposed. Herein, imaginary bonding is initialized at the contact points to transmit forces and moments, and the initiation of the damage is detected using the hybrid fracture model. The model is validated through the qualitative agreement between the simulation results and the analytical solution of two bonding particles. To study the effect of freeze-bond on the floating ice rubble, punch-through tests were simulated on the ice rubble under freezing and nonfreezing conditions. The deformation and resistance of the ice rubble are investigated during indenter penetration. The influence of the internal friction coefficient on the strength of the ice rubble is determined. The results indicate that the proposed model can properly describe the consolidated ice rubble, and the freeze-bond effect is of great significance to the ice rubble properties.

show abstract

Breaking characteristics of ice cover and dynamic ice load on upward–downward conical structure based on DEM simulations

Cited by 14 publications

References 61 publications

Numerical study of ice loads on different interfaces based on cohesive element formulation

Numerical study of ice loads on different interfaces based on cohesive element formulation

Microscale Modeling of Frozen Particle Fluid Systems with a Bonded-Particle Model Method

Numerical Analysis of Ice Rubble with a Freeze-Bond Model in Dilated Polyhedral Discrete Element Method

Contact Info

Product

Resources

About