A new swelling - creep model for red-bed mudstone and its application
In the red-bed region, engineering structures often encounter safety risks due to the swelling and creep properties of mudstone. Presently, there is a deficiency in constitutive equations capable of characterizing mudstone behavior under combined stress and swelling. To tackle this challenge, the de...
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Frontiers Media S.A.
2025-03-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2025.1577262/full |
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| author | Hongyi Yan Feng Yu Chaobo Zhu Jianwei Yuan Qiang Wang Jiang Wu |
| author_facet | Hongyi Yan Feng Yu Chaobo Zhu Jianwei Yuan Qiang Wang Jiang Wu |
| author_sort | Hongyi Yan |
| collection | DOAJ |
| description | In the red-bed region, engineering structures often encounter safety risks due to the swelling and creep properties of mudstone. Presently, there is a deficiency in constitutive equations capable of characterizing mudstone behavior under combined stress and swelling. To tackle this challenge, the deformation characteristics of red-bed mudstone were summarized based on the previous experimental data. A new element combination model (namely, swelling-creep model), comprising a Burgers body, swelling body, and nonlinear damper, was established to describe attenuated creep, swelling deformation, and accelerated creep, respectively. Based on this, the three-dimensional constitutive equations of the swelling-creep model were derived. Subsequently, based on the UDM program of FLAC3D, the model was further developed using C++ language. Additionally, the developed swelling-creep model was validated through the numerical simulation experiments. Finally, the swelling-creep deformation process of red-bed mudstone under tensile stress conditions was simulated using the developed swelling-creep model. The research results indicate that the fitting results of the swelling-creep model are in good agreement with the experimental data, demonstrating its accuracy in describing the swelling and creep characteristics of red-bed mudstone. Moreover, when red-bed mudstone is subjected to axial tensile stress, the swelling effect significantly increases the axial strain rate and accelerates the transition to the accelerated creep stage. |
| format | Article |
| id | doaj-art-69ec985c78a84437ae87d5c8cc4eadc7 |
| institution | DOAJ |
| issn | 2296-6463 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj-art-69ec985c78a84437ae87d5c8cc4eadc72025-08-20T02:41:10ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632025-03-011310.3389/feart.2025.15772621577262A new swelling - creep model for red-bed mudstone and its applicationHongyi Yan0Feng Yu1Chaobo Zhu2Jianwei Yuan3Qiang Wang4Jiang Wu5College of Civil and Construction Engineering, Hunan Institute of Technology, Hengyang, Hunan, ChinaSichuan Third Geological Brigade, Chengdu, Sichuan, ChinaSichuan Third Geological Brigade, Chengdu, Sichuan, ChinaSichuan Third Geological Brigade, Chengdu, Sichuan, ChinaSichuan Third Geological Brigade, Chengdu, Sichuan, ChinaSichuan Third Geological Brigade, Chengdu, Sichuan, ChinaIn the red-bed region, engineering structures often encounter safety risks due to the swelling and creep properties of mudstone. Presently, there is a deficiency in constitutive equations capable of characterizing mudstone behavior under combined stress and swelling. To tackle this challenge, the deformation characteristics of red-bed mudstone were summarized based on the previous experimental data. A new element combination model (namely, swelling-creep model), comprising a Burgers body, swelling body, and nonlinear damper, was established to describe attenuated creep, swelling deformation, and accelerated creep, respectively. Based on this, the three-dimensional constitutive equations of the swelling-creep model were derived. Subsequently, based on the UDM program of FLAC3D, the model was further developed using C++ language. Additionally, the developed swelling-creep model was validated through the numerical simulation experiments. Finally, the swelling-creep deformation process of red-bed mudstone under tensile stress conditions was simulated using the developed swelling-creep model. The research results indicate that the fitting results of the swelling-creep model are in good agreement with the experimental data, demonstrating its accuracy in describing the swelling and creep characteristics of red-bed mudstone. Moreover, when red-bed mudstone is subjected to axial tensile stress, the swelling effect significantly increases the axial strain rate and accelerates the transition to the accelerated creep stage.https://www.frontiersin.org/articles/10.3389/feart.2025.1577262/fullred-bed mudstoneswelling-creepconstitutive modelnumerical simulationFLAC3D |
| spellingShingle | Hongyi Yan Feng Yu Chaobo Zhu Jianwei Yuan Qiang Wang Jiang Wu A new swelling - creep model for red-bed mudstone and its application Frontiers in Earth Science red-bed mudstone swelling-creep constitutive model numerical simulation FLAC3D |
| title | A new swelling - creep model for red-bed mudstone and its application |
| title_full | A new swelling - creep model for red-bed mudstone and its application |
| title_fullStr | A new swelling - creep model for red-bed mudstone and its application |
| title_full_unstemmed | A new swelling - creep model for red-bed mudstone and its application |
| title_short | A new swelling - creep model for red-bed mudstone and its application |
| title_sort | new swelling creep model for red bed mudstone and its application |
| topic | red-bed mudstone swelling-creep constitutive model numerical simulation FLAC3D |
| url | https://www.frontiersin.org/articles/10.3389/feart.2025.1577262/full |
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