Fuzzy Plastic Constitutive Model and Its Application to Subgrade
The subgrade of a road is subjected to cyclic loading and unloading under the action of traffic loads. To study this mechanical response, the plastic membership function was introduced into the modified Cambridge model, and thus, the fuzzy plastic Cambridge constitutive model was obtained. With the...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/3005467 |
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| _version_ | 1850171961480577024 |
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| author | Xigang Wang Liling Jin Yang Xing Mingfu Fu |
| author_facet | Xigang Wang Liling Jin Yang Xing Mingfu Fu |
| author_sort | Xigang Wang |
| collection | DOAJ |
| description | The subgrade of a road is subjected to cyclic loading and unloading under the action of traffic loads. To study this mechanical response, the plastic membership function was introduced into the modified Cambridge model, and thus, the fuzzy plastic Cambridge constitutive model was obtained. With the continuous evolution of the plastic membership function from 0 to 1, the fuzzy plastic Cambridge constitutive model continuously transitions the plastic properties inside and outside the initial yield surface. The evolution of the plastic membership function can replace the complex hardening law. The reliability of the model was verified using triaxial tests and simple cyclic loading and unloading tests. Using the finite element method, the mechanical response of the subgrade under cyclic loading was calculated. The fuzzy plastic Cambridge model can explain the insignificant yield characteristics of geotechnical media. In the fuzzy plasticity theory, the stress inside and outside the initial yield surface can produce plasticity. Absolute plasticity was not observed; only different degrees of plasticity existed. |
| format | Article |
| id | doaj-art-a6c0ba55f11c4e0a9e45eee5ae5c0cc9 |
| institution | OA Journals |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-a6c0ba55f11c4e0a9e45eee5ae5c0cc92025-08-20T02:20:10ZengWileyAdvances in Civil Engineering1687-80861687-80942021-01-01202110.1155/2021/30054673005467Fuzzy Plastic Constitutive Model and Its Application to SubgradeXigang Wang0Liling Jin1Yang Xing2Mingfu Fu3School of Resources and Civil Engineering, Liaoning Institute of Science and Technology, Xihu District, Benxi 117004, ChinaSchool of Resources and Civil Engineering, Liaoning Institute of Science and Technology, Xihu District, Benxi 117004, ChinaSchool of Resources and Civil Engineering, Liaoning Institute of Science and Technology, Xihu District, Benxi 117004, ChinaSchool of Civil Engineering and Architecture, Nanchang University, Honggutan District, Nanchang 330031, ChinaThe subgrade of a road is subjected to cyclic loading and unloading under the action of traffic loads. To study this mechanical response, the plastic membership function was introduced into the modified Cambridge model, and thus, the fuzzy plastic Cambridge constitutive model was obtained. With the continuous evolution of the plastic membership function from 0 to 1, the fuzzy plastic Cambridge constitutive model continuously transitions the plastic properties inside and outside the initial yield surface. The evolution of the plastic membership function can replace the complex hardening law. The reliability of the model was verified using triaxial tests and simple cyclic loading and unloading tests. Using the finite element method, the mechanical response of the subgrade under cyclic loading was calculated. The fuzzy plastic Cambridge model can explain the insignificant yield characteristics of geotechnical media. In the fuzzy plasticity theory, the stress inside and outside the initial yield surface can produce plasticity. Absolute plasticity was not observed; only different degrees of plasticity existed.http://dx.doi.org/10.1155/2021/3005467 |
| spellingShingle | Xigang Wang Liling Jin Yang Xing Mingfu Fu Fuzzy Plastic Constitutive Model and Its Application to Subgrade Advances in Civil Engineering |
| title | Fuzzy Plastic Constitutive Model and Its Application to Subgrade |
| title_full | Fuzzy Plastic Constitutive Model and Its Application to Subgrade |
| title_fullStr | Fuzzy Plastic Constitutive Model and Its Application to Subgrade |
| title_full_unstemmed | Fuzzy Plastic Constitutive Model and Its Application to Subgrade |
| title_short | Fuzzy Plastic Constitutive Model and Its Application to Subgrade |
| title_sort | fuzzy plastic constitutive model and its application to subgrade |
| url | http://dx.doi.org/10.1155/2021/3005467 |
| work_keys_str_mv | AT xigangwang fuzzyplasticconstitutivemodelanditsapplicationtosubgrade AT lilingjin fuzzyplasticconstitutivemodelanditsapplicationtosubgrade AT yangxing fuzzyplasticconstitutivemodelanditsapplicationtosubgrade AT mingfufu fuzzyplasticconstitutivemodelanditsapplicationtosubgrade |