| JI Shunying,SHEN Hung Tao,WANG Zhilian,SHEN H Hayley,YUE Qianjin. 2005. A viscoelastic-plastic constitutive model with Mohr-Coulomb yielding criterion for sea ice dynamics. Acta Oceanologica Sinica, (4):54－65 |
| A viscoelastic-plastic constitutive model with Mohr-Coulomb yielding criterion for sea ice dynamics |
| A viscoelastic-plastic constitutive model with Mohr-Coulomb yielding criterion for sea ice dynamics |
| Received:March 11, 2005 Revised:April 20, 2005 |
| DOI： |
| Key words:sea ice dynamics constitutive model viscous plasticity viscoelastic-plastic model Mohr-Coulomb criterion |
| 中文关键词: sea ice dynamics constitutive model viscous plasticity viscoelastic-plastic model Mohr-Coulomb criterion |
| 基金项目: |
| Author Name | Affiliation | E-mail | | JI Shunying | State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116023, China | jisy@dlut.edu.cn | | SHEN Hung Tao | Department of Civil and Environmental Engineering, Clarkson University, Potsdam, New York 13699-5710, USA | | | WANG Zhilian | Department of Civil and Environmental Engineering, Clarkson University, Potsdam, New York 13699-5710, USA | | | SHEN H Hayley | Department of Civil and Environmental Engineering, Clarkson University, Potsdam, New York 13699-5710, USA | | | YUE Qianjin | State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116023, China | |
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| Abstract: |
| A new viscoelastic-plastic(VEP) constitutive model for sea ice dynamics was 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 rehololgy,and hydrostatic pressure.The numerical simulations for ice motion in an idealized rectangular basin were made 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 modelcan simulate ice dynamics accurately.The new constitutive model was further applied to simulate ice dynamics of the Bohai Sea and compared with the traditional VP,and modified VP models.The results of the VEP model are compared better with the satellite remote images,and the simulated ice conditions in the JZ20-2 oil platform area were more reasonable. |
| 中文摘要: |
| A new viscoelastic-plastic(VEP) constitutive model for sea ice dynamics was 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 rehololgy,and hydrostatic pressure.The numerical simulations for ice motion in an idealized rectangular basin were made 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 modelcan simulate ice dynamics accurately.The new constitutive model was further applied to simulate ice dynamics of the Bohai Sea and compared with the traditional VP,and modified VP models.The results of the VEP model are compared better with the satellite remote images,and the simulated ice conditions in the JZ20-2 oil platform area were more reasonable. |
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