The viscoplastic constitutive model of TC4 alloy under high temperature
TC4 alloy is widely used in the high temperature environment. This paper proposed an ununified viscoplastic constitutive model according to the uniaxial creep experiment and high temperature tensile experiment of TC4 alloy. The inelastic strain rate was decomposed into two parts: creep strain rate a...
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| Format: | Article |
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EDP Sciences
2023-02-01
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| Series: | Xibei Gongye Daxue Xuebao |
| Subjects: | |
| Online Access: | https://www.jnwpu.org/articles/jnwpu/full_html/2023/01/jnwpu2023411p65/jnwpu2023411p65.html |
| _version_ | 1797415112327299072 |
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| author | HE Yuxin MA Yu'e |
| author_facet | HE Yuxin MA Yu'e |
| author_sort | HE Yuxin |
| collection | DOAJ |
| description | TC4 alloy is widely used in the high temperature environment. This paper proposed an ununified viscoplastic constitutive model according to the uniaxial creep experiment and high temperature tensile experiment of TC4 alloy. The inelastic strain rate was decomposed into two parts: creep strain rate and plastic strain rate. The creep strain was calculated by multiaxial ductility exhaustion creep damage law, and the plastic strain was get from the yield function containing the damage and the kinematic hardening effect. The implicit stress integration algorithm and the consistent tangent modulus of this model were derived. The material constants of the proposed model were determined by using genetic algorithm. The proposed constitutive model was compiled in a UMAT subroutine of finite element software Abaqus and 3D eight nodes isoparametric brick element was employed to simulate the creep and the tensile behavior of TC4 alloy. Form the result, the proposed constitutive model can predict the three stages of creep curves and the softening stage of tensile curves accurately. |
| first_indexed | 2024-03-09T05:43:21Z |
| format | Article |
| id | doaj.art-918268873cab47428de742aa124effdf |
| institution | Directory Open Access Journal |
| issn | 1000-2758 2609-7125 |
| language | zho |
| last_indexed | 2024-03-09T05:43:21Z |
| publishDate | 2023-02-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Xibei Gongye Daxue Xuebao |
| spelling | doaj.art-918268873cab47428de742aa124effdf2023-12-03T12:23:26ZzhoEDP SciencesXibei Gongye Daxue Xuebao1000-27582609-71252023-02-01411657210.1051/jnwpu/20234110065jnwpu2023411p65The viscoplastic constitutive model of TC4 alloy under high temperatureHE Yuxin0MA Yu'e1School of Aeronautics, Northwestern Polytechnical UniversitySchool of Aeronautics, Northwestern Polytechnical UniversityTC4 alloy is widely used in the high temperature environment. This paper proposed an ununified viscoplastic constitutive model according to the uniaxial creep experiment and high temperature tensile experiment of TC4 alloy. The inelastic strain rate was decomposed into two parts: creep strain rate and plastic strain rate. The creep strain was calculated by multiaxial ductility exhaustion creep damage law, and the plastic strain was get from the yield function containing the damage and the kinematic hardening effect. The implicit stress integration algorithm and the consistent tangent modulus of this model were derived. The material constants of the proposed model were determined by using genetic algorithm. The proposed constitutive model was compiled in a UMAT subroutine of finite element software Abaqus and 3D eight nodes isoparametric brick element was employed to simulate the creep and the tensile behavior of TC4 alloy. Form the result, the proposed constitutive model can predict the three stages of creep curves and the softening stage of tensile curves accurately.https://www.jnwpu.org/articles/jnwpu/full_html/2023/01/jnwpu2023411p65/jnwpu2023411p65.htmltc4合金蠕变高温拉伸黏塑性本构模型隐式积分算法 |
| spellingShingle | HE Yuxin MA Yu'e The viscoplastic constitutive model of TC4 alloy under high temperature Xibei Gongye Daxue Xuebao tc4合金 蠕变 高温拉伸 黏塑性本构模型 隐式积分算法 |
| title | The viscoplastic constitutive model of TC4 alloy under high temperature |
| title_full | The viscoplastic constitutive model of TC4 alloy under high temperature |
| title_fullStr | The viscoplastic constitutive model of TC4 alloy under high temperature |
| title_full_unstemmed | The viscoplastic constitutive model of TC4 alloy under high temperature |
| title_short | The viscoplastic constitutive model of TC4 alloy under high temperature |
| title_sort | viscoplastic constitutive model of tc4 alloy under high temperature |
| topic | tc4合金 蠕变 高温拉伸 黏塑性本构模型 隐式积分算法 |
| url | https://www.jnwpu.org/articles/jnwpu/full_html/2023/01/jnwpu2023411p65/jnwpu2023411p65.html |
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