A Thermodynamic Constitutive Model for Saturated Sand
This paper establishes a non-equilibrium thermodynamic constitutive model that can predict the undrained shear behavior of saturated sand. Starting from the basic laws of thermodynamics, the model does not require the classical concepts in elasto-plastic models, such as the yield function, the flow...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2019-02-01
|
| Series: | Entropy |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1099-4300/21/2/136 |
| _version_ | 1811183855722299392 |
|---|---|
| author | Shize Xiao Xiaohui Cheng Zhou Yang |
| author_facet | Shize Xiao Xiaohui Cheng Zhou Yang |
| author_sort | Shize Xiao |
| collection | DOAJ |
| description | This paper establishes a non-equilibrium thermodynamic constitutive model that can predict the undrained shear behavior of saturated sand. Starting from the basic laws of thermodynamics, the model does not require the classical concepts in elasto-plastic models, such as the yield function, the flow rule, and the hardening rule. It is also different from the existing thermodynamic constitutive models in soil mechanics literatures. The model does not use a complex nonlinear elastic potential as usually and introduces a coupling energy dissipative mechanism between the viscosity and elasticity relaxation, which is essential in granular materials. Then this model was used to simulate the undrained shear test of Toyoura sand. The model can predict the critical state, dilatancy-contraction and hardening-softening characteristics of sand during undrained triaxial shearing. |
| first_indexed | 2024-04-11T13:03:37Z |
| format | Article |
| id | doaj.art-4ace6484ae9745f795eba44a5e35940c |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-04-11T13:03:37Z |
| publishDate | 2019-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-4ace6484ae9745f795eba44a5e35940c2022-12-22T04:22:50ZengMDPI AGEntropy1099-43002019-02-0121213610.3390/e21020136e21020136A Thermodynamic Constitutive Model for Saturated SandShize Xiao0Xiaohui Cheng1Zhou Yang2Department of Civil Engineering, Tsinghua University, Beijing 100084, ChinaDepartment of Civil Engineering, Tsinghua University, Beijing 100084, ChinaDepartment of Civil Engineering, Tsinghua University, Beijing 100084, ChinaThis paper establishes a non-equilibrium thermodynamic constitutive model that can predict the undrained shear behavior of saturated sand. Starting from the basic laws of thermodynamics, the model does not require the classical concepts in elasto-plastic models, such as the yield function, the flow rule, and the hardening rule. It is also different from the existing thermodynamic constitutive models in soil mechanics literatures. The model does not use a complex nonlinear elastic potential as usually and introduces a coupling energy dissipative mechanism between the viscosity and elasticity relaxation, which is essential in granular materials. Then this model was used to simulate the undrained shear test of Toyoura sand. The model can predict the critical state, dilatancy-contraction and hardening-softening characteristics of sand during undrained triaxial shearing.https://www.mdpi.com/1099-4300/21/2/136non-equilibrium thermodynamicssandconstitutive modeltriaxial undrained tests |
| spellingShingle | Shize Xiao Xiaohui Cheng Zhou Yang A Thermodynamic Constitutive Model for Saturated Sand Entropy non-equilibrium thermodynamics sand constitutive model triaxial undrained tests |
| title | A Thermodynamic Constitutive Model for Saturated Sand |
| title_full | A Thermodynamic Constitutive Model for Saturated Sand |
| title_fullStr | A Thermodynamic Constitutive Model for Saturated Sand |
| title_full_unstemmed | A Thermodynamic Constitutive Model for Saturated Sand |
| title_short | A Thermodynamic Constitutive Model for Saturated Sand |
| title_sort | thermodynamic constitutive model for saturated sand |
| topic | non-equilibrium thermodynamics sand constitutive model triaxial undrained tests |
| url | https://www.mdpi.com/1099-4300/21/2/136 |
| work_keys_str_mv | AT shizexiao athermodynamicconstitutivemodelforsaturatedsand AT xiaohuicheng athermodynamicconstitutivemodelforsaturatedsand AT zhouyang athermodynamicconstitutivemodelforsaturatedsand AT shizexiao thermodynamicconstitutivemodelforsaturatedsand AT xiaohuicheng thermodynamicconstitutivemodelforsaturatedsand AT zhouyang thermodynamicconstitutivemodelforsaturatedsand |