A Study of Coupled Creep Damaged Constitutive Model of Artificial Frozen Soil
Artificial frozen soil is a kind of typical creep material, and the frozen clay under the unloading stress paths of high-confining pressure conforms to the improved the Zienkiewicz–Pande parabola-type yield criterion, and the Mohr–Coulomb yield function can describe the shear yield surface of artifi...
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Wiley
2018-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/7458696 |
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| author | Dongwei Li Junhao Chen Yan Zhou |
| author_facet | Dongwei Li Junhao Chen Yan Zhou |
| author_sort | Dongwei Li |
| collection | DOAJ |
| description | Artificial frozen soil is a kind of typical creep material, and the frozen clay under the unloading stress paths of high-confining pressure conforms to the improved the Zienkiewicz–Pande parabola-type yield criterion, and the Mohr–Coulomb yield function can describe the shear yield surface of artificial frozen clay under low-confining pressure. Based on the results of triaxial creep and shear tests for artificial frozen soil, the viscoplastic damage variable and evolution rule of artificial frozen clay were obtained by using the theory of viscoelastic-plastic mechanics and damage mechanics. An improved Zienkiewicz–Pande parabola-type yield criterion was used instead of a linear Newton body to obtain a coupled constitutive model of viscoelastic-plastic damage in the frozen soil under the unloading stress paths and to derive the coupling flexibility matrix for viscoelastic and viscoplastic damage. A finite element program of artificial frozen soil considering creep damage was written in the Visual Fortran 6.6A environment and embedded into the nonlinear finite element software ADINA as a user subroutine. The results of numerical simulation and laboratory testing were identical, with a maximum error of no more than 4.8%. This work shows that it is reasonable to describe the creep constitutive model of frozen soil with the viscoelastic-plastic-coupled constitutive model. |
| format | Article |
| id | doaj-art-f424b80d2bfc44408345d8efd64727ea |
| institution | OA Journals |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-f424b80d2bfc44408345d8efd64727ea2025-08-20T02:21:46ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422018-01-01201810.1155/2018/74586967458696A Study of Coupled Creep Damaged Constitutive Model of Artificial Frozen SoilDongwei Li0Junhao Chen1Yan Zhou2Faculty of Civil and Architecture Engineering, East China Institute of Technology, Nanchang 330013, ChinaSchool of Civil Engineering, Fujian University of Technology, Fuzhou 350108, ChinaSchool of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, ChinaArtificial frozen soil is a kind of typical creep material, and the frozen clay under the unloading stress paths of high-confining pressure conforms to the improved the Zienkiewicz–Pande parabola-type yield criterion, and the Mohr–Coulomb yield function can describe the shear yield surface of artificial frozen clay under low-confining pressure. Based on the results of triaxial creep and shear tests for artificial frozen soil, the viscoplastic damage variable and evolution rule of artificial frozen clay were obtained by using the theory of viscoelastic-plastic mechanics and damage mechanics. An improved Zienkiewicz–Pande parabola-type yield criterion was used instead of a linear Newton body to obtain a coupled constitutive model of viscoelastic-plastic damage in the frozen soil under the unloading stress paths and to derive the coupling flexibility matrix for viscoelastic and viscoplastic damage. A finite element program of artificial frozen soil considering creep damage was written in the Visual Fortran 6.6A environment and embedded into the nonlinear finite element software ADINA as a user subroutine. The results of numerical simulation and laboratory testing were identical, with a maximum error of no more than 4.8%. This work shows that it is reasonable to describe the creep constitutive model of frozen soil with the viscoelastic-plastic-coupled constitutive model.http://dx.doi.org/10.1155/2018/7458696 |
| spellingShingle | Dongwei Li Junhao Chen Yan Zhou A Study of Coupled Creep Damaged Constitutive Model of Artificial Frozen Soil Advances in Materials Science and Engineering |
| title | A Study of Coupled Creep Damaged Constitutive Model of Artificial Frozen Soil |
| title_full | A Study of Coupled Creep Damaged Constitutive Model of Artificial Frozen Soil |
| title_fullStr | A Study of Coupled Creep Damaged Constitutive Model of Artificial Frozen Soil |
| title_full_unstemmed | A Study of Coupled Creep Damaged Constitutive Model of Artificial Frozen Soil |
| title_short | A Study of Coupled Creep Damaged Constitutive Model of Artificial Frozen Soil |
| title_sort | study of coupled creep damaged constitutive model of artificial frozen soil |
| url | http://dx.doi.org/10.1155/2018/7458696 |
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