On the potential of computational methods and numerical simulation in ice mechanics

This paper deals with the challenge of developing better methods and tools for analysing interaction between sea ice and structures and, in particular, to be able to calculate ice loads on these structures. Ice loads have traditionally been estimated using empirical data and "engineering judgme...

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Vydáno v:IOP conference series. Materials Science and Engineering Ročník 10; číslo 1; s. 012102
Hlavní autoři: Bergan, Pål G, Cammaert, Gus, Skeie, Geir, Tharigopula, Venkatapathi
Médium: Journal Article
Jazyk:angličtina
Vydáno: Bristol IOP Publishing 01.06.2010
Témata:
Computation
Computational mechanics
Computer programs
Computer simulation
Creep (materials)
Deformation effects
Elasticity
Empirical analysis
Finite element method
Ice loads
Instability
Materials science
Mathematical models
Mechanics
Numerical methods
Offshore structures
Particle methods (mathematics)
Sea ice
Simulation
Temperature effects
ISSN:1757-899X, 1757-8981, 1757-899X
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Popis
Shrnutí:This paper deals with the challenge of developing better methods and tools for analysing interaction between sea ice and structures and, in particular, to be able to calculate ice loads on these structures. Ice loads have traditionally been estimated using empirical data and "engineering judgment". However, it is believed that computational mechanics and advanced computer simulations of ice-structure interaction can play an important role in developing safer and more efficient structures, especially for irregular structural configurations. The paper explains the complexity of ice as a material in computational mechanics terms. Some key words here are large displacements and deformations, multi-body contact mechanics, instabilities, multi-phase materials, inelasticity, time dependency and creep, thermal effects, fracture and crushing, and multi-scale effects. The paper points towards the use of advanced methods like ALE formulations, mesh-less methods, particle methods, XFEM, and multi-domain formulations in order to deal with these challenges. Some examples involving numerical simulation of interaction and loads between level sea ice and offshore structures are presented. It is concluded that computational mechanics may prove to become a very useful tool for analysing structures in ice; however, much research is still needed to achieve satisfactory reliability and versatility of these methods.
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ISSN:1757-899X
1757-8981
1757-899X
DOI:10.1088/1757-899X/10/1/012102