A viscoelastic-plastic constitutive model with Mohr-Coulomb yielding criterion for sea ice dynamics

JI Shun-ying; SHEN Hung Tao; WANG Zhi-lian; SHEN Hayley; YUE Qian-jin

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Article Navigation > Haiyang Xuebao > 2005 > 27(4): 19-30

JI Shun-ying, SHEN Hung Tao, WANG Zhi-lian, SHEN Hayley, YUE Qian-jin. A viscoelastic-plastic constitutive model with Mohr-Coulomb yielding criterion for sea ice dynamics[J]. Haiyang Xuebao, 2005, 27(4): 19-30.

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A viscoelastic-plastic constitutive model with Mohr-Coulomb yielding criterion for sea ice dynamics

1.
State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116023, China
2.
Department of Civil and Environmental Engineering, Clarkson University, New York 13699-5710, USA

Received Date: 2004-03-14
Rev Recd Date: 2004-09-12

Abstract

Abstract

A new viscoelastic-plastic(VEP) constitutive model for seaice dynamics is developed based on continuum mechanics.This model consists of four components:Kelvin-Vogit viscoelastic model,Mohr-Coulomb yielding criterion,associated normality flow rule for plastic rheology,and hydrostatic pressure.The numerical simulations for ice motion in an idealized rectangular basin are carried out using smoothed particle hydrodynamics(SPH) method,and compared with the analytical solution as well as those based on the modified viscous plastic(VP) model and static ice jam theory.These simulations show that the new VEP model can simulate ice dynamics accurately.The new constitutive model is further applied to simulating ice dynamics of the Bohai Sea and compared with the traditional V P,and modified VP models.The results of VEP model are compared better with the satellite remote sensing images,and the simulating ice conditions in the JZ20-2 Oil Plat form area are more reaso nable.
- seaice dynamics,
- constitutive model,
- viscous plasticity,
- viscoelastic-plastic model,
- Mohr-Coulomb criterion

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References

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