Modeling dynamic anisotropic behaviour and spall failure in commercial aluminium alloys AA7010
This paper presents a finite strain constitutive model to predict a complex elastoplastic deformation behaviour involves very high pressures and shockwaves in orthotropic materials of aluminium alloys. The previous published constitutive model is used as a reference to start the development in this...
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| Format: | Article |
| Language: | English |
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Springer Nature
2018
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| Online Access: | http://eprints.uthm.edu.my/5575/1/AJ%202018%20%28225%29.pdf |
| _version_ | 1825710043862925312 |
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| author | Mohd Nor, M. K. Ma’at, N. Ho, C. S. |
| author_facet | Mohd Nor, M. K. Ma’at, N. Ho, C. S. |
| author_sort | Mohd Nor, M. K. |
| collection | UTHM |
| description | This paper presents a finite strain constitutive model to predict a complex elastoplastic deformation behaviour involves very high pressures and shockwaves in orthotropic materials of aluminium alloys. The previous published constitutive model is used as a reference to start the development in this work. The proposed formulation that used a new definition Mandel of stress tensor to define Hill’s yield criterion and a new shock equation of state (EOS) of generalised orthotropic pressure is further enhanced with Grady spall failure model to closely predict shockwave propagation and spall failure in chosen commercial materials. This hyperelastic-plastic constitutive model is implemented as 1᨞᨟ᨠᨡ 1 1 1 a new material model in the Lawrence Livermore National Laboratory (LLNL)-DYNA3D code of UTHM’s version, named Material Type 92 (Mat92). The implementation of a new EOS that is modified to match the generalised orthotropic pressure including the spall failure is also discussed in this paper. The capability of the proposed constitutive model to capture the complex behaviour of the selected material is validated against range of Plate Impact Test data at 234, 450 and 895 ms impact velocities. |
| first_indexed | 2024-03-05T21:51:37Z |
| format | Article |
| id | uthm.eprints-5575 |
| institution | Universiti Tun Hussein Onn Malaysia |
| language | English |
| last_indexed | 2024-03-05T21:51:37Z |
| publishDate | 2018 |
| publisher | Springer Nature |
| record_format | dspace |
| spelling | uthm.eprints-55752022-01-17T01:40:31Z http://eprints.uthm.edu.my/5575/ Modeling dynamic anisotropic behaviour and spall failure in commercial aluminium alloys AA7010 Mohd Nor, M. K. Ma’at, N. Ho, C. S. T Technology (General) TA401-492 Materials of engineering and construction. Mechanics of materials This paper presents a finite strain constitutive model to predict a complex elastoplastic deformation behaviour involves very high pressures and shockwaves in orthotropic materials of aluminium alloys. The previous published constitutive model is used as a reference to start the development in this work. The proposed formulation that used a new definition Mandel of stress tensor to define Hill’s yield criterion and a new shock equation of state (EOS) of generalised orthotropic pressure is further enhanced with Grady spall failure model to closely predict shockwave propagation and spall failure in chosen commercial materials. This hyperelastic-plastic constitutive model is implemented as 1᨞᨟ᨠᨡ 1 1 1 a new material model in the Lawrence Livermore National Laboratory (LLNL)-DYNA3D code of UTHM’s version, named Material Type 92 (Mat92). The implementation of a new EOS that is modified to match the generalised orthotropic pressure including the spall failure is also discussed in this paper. The capability of the proposed constitutive model to capture the complex behaviour of the selected material is validated against range of Plate Impact Test data at 234, 450 and 895 ms impact velocities. Springer Nature 2018 Article PeerReviewed text en http://eprints.uthm.edu.my/5575/1/AJ%202018%20%28225%29.pdf Mohd Nor, M. K. and Ma’at, N. and Ho, C. S. (2018) Modeling dynamic anisotropic behaviour and spall failure in commercial aluminium alloys AA7010. Journal of Dynamic Behavior of Materials, 4. pp. 201-210. ISSN 2199-7446 |
| spellingShingle | T Technology (General) TA401-492 Materials of engineering and construction. Mechanics of materials Mohd Nor, M. K. Ma’at, N. Ho, C. S. Modeling dynamic anisotropic behaviour and spall failure in commercial aluminium alloys AA7010 |
| title | Modeling dynamic anisotropic behaviour and spall failure in commercial aluminium alloys AA7010 |
| title_full | Modeling dynamic anisotropic behaviour and spall failure in commercial aluminium alloys AA7010 |
| title_fullStr | Modeling dynamic anisotropic behaviour and spall failure in commercial aluminium alloys AA7010 |
| title_full_unstemmed | Modeling dynamic anisotropic behaviour and spall failure in commercial aluminium alloys AA7010 |
| title_short | Modeling dynamic anisotropic behaviour and spall failure in commercial aluminium alloys AA7010 |
| title_sort | modeling dynamic anisotropic behaviour and spall failure in commercial aluminium alloys aa7010 |
| topic | T Technology (General) TA401-492 Materials of engineering and construction. Mechanics of materials |
| url | http://eprints.uthm.edu.my/5575/1/AJ%202018%20%28225%29.pdf |
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