Finite Element Simulations of an Elasto-Viscoplastic Model for Clay
In this paper, we develop an elasto-viscoplastic (EVP) model for clay using the non-associated flow rule. This is accomplished by using a modified form of the Perzyna’s overstressed EVP theory, the critical state soil mechanics, and the multi-surface theory. The new model includes six para...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-03-01
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| Series: | Geosciences |
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| Online Access: | https://www.mdpi.com/2076-3263/9/3/145 |
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| author | Mohammad N. Islam Carthigesu T. Gnanendran Mehrdad Massoudi |
| author_facet | Mohammad N. Islam Carthigesu T. Gnanendran Mehrdad Massoudi |
| author_sort | Mohammad N. Islam |
| collection | DOAJ |
| description | In this paper, we develop an elasto-viscoplastic (EVP) model for clay using the non-associated flow rule. This is accomplished by using a modified form of the Perzyna’s overstressed EVP theory, the critical state soil mechanics, and the multi-surface theory. The new model includes six parameters, five of which are identical to those in the critical state soil mechanics model. The other parameter is the generalized nonlinear secondary compression index. The EVP model was implemented in a nonlinear coupled consolidated code using a finite-element numerical algorithm (AFENA). We then tested the model for different clays, such as the Osaka clay, the San Francisco Bay Mud clay, the Kaolin clay, and the Hong Kong Marine Deposit clay. The numerical results show good agreement with the experimental data. |
| first_indexed | 2024-12-21T14:07:24Z |
| format | Article |
| id | doaj.art-2c7c6cda98ae403c8e8a393e022f285b |
| institution | Directory Open Access Journal |
| issn | 2076-3263 |
| language | English |
| last_indexed | 2024-12-21T14:07:24Z |
| publishDate | 2019-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Geosciences |
| spelling | doaj.art-2c7c6cda98ae403c8e8a393e022f285b2022-12-21T19:01:09ZengMDPI AGGeosciences2076-32632019-03-019314510.3390/geosciences9030145geosciences9030145Finite Element Simulations of an Elasto-Viscoplastic Model for ClayMohammad N. Islam0Carthigesu T. Gnanendran1Mehrdad Massoudi2School of Engineering and Information Technology, University of New South Wales, Canberra, ACT 2612, AustraliaSchool of Engineering and Information Technology, University of New South Wales, Canberra, ACT 2612, AustraliaUS Department of Energy, National Energy Technology Laboratory (NETL), P.O. BOX 10940, 626 Cochrans Mill Road, Pittsburgh, PA 15236, USAIn this paper, we develop an elasto-viscoplastic (EVP) model for clay using the non-associated flow rule. This is accomplished by using a modified form of the Perzyna’s overstressed EVP theory, the critical state soil mechanics, and the multi-surface theory. The new model includes six parameters, five of which are identical to those in the critical state soil mechanics model. The other parameter is the generalized nonlinear secondary compression index. The EVP model was implemented in a nonlinear coupled consolidated code using a finite-element numerical algorithm (AFENA). We then tested the model for different clays, such as the Osaka clay, the San Francisco Bay Mud clay, the Kaolin clay, and the Hong Kong Marine Deposit clay. The numerical results show good agreement with the experimental data.https://www.mdpi.com/2076-3263/9/3/145finite elementnon-associated flow ruleelasto-viscoplastic modelclaycritical state |
| spellingShingle | Mohammad N. Islam Carthigesu T. Gnanendran Mehrdad Massoudi Finite Element Simulations of an Elasto-Viscoplastic Model for Clay Geosciences finite element non-associated flow rule elasto-viscoplastic model clay critical state |
| title | Finite Element Simulations of an Elasto-Viscoplastic Model for Clay |
| title_full | Finite Element Simulations of an Elasto-Viscoplastic Model for Clay |
| title_fullStr | Finite Element Simulations of an Elasto-Viscoplastic Model for Clay |
| title_full_unstemmed | Finite Element Simulations of an Elasto-Viscoplastic Model for Clay |
| title_short | Finite Element Simulations of an Elasto-Viscoplastic Model for Clay |
| title_sort | finite element simulations of an elasto viscoplastic model for clay |
| topic | finite element non-associated flow rule elasto-viscoplastic model clay critical state |
| url | https://www.mdpi.com/2076-3263/9/3/145 |
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