Modeling the Hydro-Mechanical Coupling Behavior of Unsaturated Geotechnical Materials Based on Non-Equilibrium Thermodynamic Theory
A new hydro-mechanical model for unsaturated geotechnical materials based on the non-equilibrium thermodynamic theory is presented in this paper. Common concepts, such as yield criterion and flow rules, are not involved in the constitutive relationships, and are replaced with the thermodynamic conce...
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| Format: | Article |
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MDPI AG
2020-08-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/16/5668 |
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| author | Guangchang Yang Yang Liu Peipei Chen |
| author_facet | Guangchang Yang Yang Liu Peipei Chen |
| author_sort | Guangchang Yang |
| collection | DOAJ |
| description | A new hydro-mechanical model for unsaturated geotechnical materials based on the non-equilibrium thermodynamic theory is presented in this paper. Common concepts, such as yield criterion and flow rules, are not involved in the constitutive relationships, and are replaced with the thermodynamic concepts of granular temperature, granular entropy, migration coefficients, and energy functions. The dissipation system and the migration coefficient relationships are theoretically determined, and the constitutive relations of non-elastic deformation and granular temperature are obtained by dissipation relations and thermodynamic identity. Thus, the relationship between dissipation mechanism and macro mechanical behavior can be established by migration coefficients and energy functions. The model can reflect the complex hydro-mechanical coupling behavior of unsaturated geotechnical materials subjected to various mechanical paths. The validity of the model is verified by comparing the modeling results with experimental data, and reasonable agreement is achieved. |
| first_indexed | 2024-03-10T17:23:32Z |
| format | Article |
| id | doaj.art-924e983830044c029351aa6e0de46321 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T17:23:32Z |
| publishDate | 2020-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-924e983830044c029351aa6e0de463212023-11-20T10:14:52ZengMDPI AGApplied Sciences2076-34172020-08-011016566810.3390/app10165668Modeling the Hydro-Mechanical Coupling Behavior of Unsaturated Geotechnical Materials Based on Non-Equilibrium Thermodynamic TheoryGuangchang Yang0Yang Liu1Peipei Chen2Department of Civil Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaDepartment of Civil Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Science, Beijing University of Civil Engineering and Architecture, Beijing 102616, ChinaA new hydro-mechanical model for unsaturated geotechnical materials based on the non-equilibrium thermodynamic theory is presented in this paper. Common concepts, such as yield criterion and flow rules, are not involved in the constitutive relationships, and are replaced with the thermodynamic concepts of granular temperature, granular entropy, migration coefficients, and energy functions. The dissipation system and the migration coefficient relationships are theoretically determined, and the constitutive relations of non-elastic deformation and granular temperature are obtained by dissipation relations and thermodynamic identity. Thus, the relationship between dissipation mechanism and macro mechanical behavior can be established by migration coefficients and energy functions. The model can reflect the complex hydro-mechanical coupling behavior of unsaturated geotechnical materials subjected to various mechanical paths. The validity of the model is verified by comparing the modeling results with experimental data, and reasonable agreement is achieved.https://www.mdpi.com/2076-3417/10/16/5668unsaturated geotechnical materialshydro-mechanical couplingnon-equilibrium thermodynamicconstitutive model |
| spellingShingle | Guangchang Yang Yang Liu Peipei Chen Modeling the Hydro-Mechanical Coupling Behavior of Unsaturated Geotechnical Materials Based on Non-Equilibrium Thermodynamic Theory Applied Sciences unsaturated geotechnical materials hydro-mechanical coupling non-equilibrium thermodynamic constitutive model |
| title | Modeling the Hydro-Mechanical Coupling Behavior of Unsaturated Geotechnical Materials Based on Non-Equilibrium Thermodynamic Theory |
| title_full | Modeling the Hydro-Mechanical Coupling Behavior of Unsaturated Geotechnical Materials Based on Non-Equilibrium Thermodynamic Theory |
| title_fullStr | Modeling the Hydro-Mechanical Coupling Behavior of Unsaturated Geotechnical Materials Based on Non-Equilibrium Thermodynamic Theory |
| title_full_unstemmed | Modeling the Hydro-Mechanical Coupling Behavior of Unsaturated Geotechnical Materials Based on Non-Equilibrium Thermodynamic Theory |
| title_short | Modeling the Hydro-Mechanical Coupling Behavior of Unsaturated Geotechnical Materials Based on Non-Equilibrium Thermodynamic Theory |
| title_sort | modeling the hydro mechanical coupling behavior of unsaturated geotechnical materials based on non equilibrium thermodynamic theory |
| topic | unsaturated geotechnical materials hydro-mechanical coupling non-equilibrium thermodynamic constitutive model |
| url | https://www.mdpi.com/2076-3417/10/16/5668 |
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