Simplified approach to validate constitutive model formulation of orthotropic materials undergoing finite strain deformation
Modelling finite strain deformation including shockwave propagation in orthotropic materials requires an appropriate description of material behaviour within elastic and plastic regimes hence can be very complex. One of the real challenges of this work is to accurately validate each of the proposed...
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Medwell Journals
2016
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| author | Mohd Nor, Mohd Khir Ma`at, Norzarina |
| author_facet | Mohd Nor, Mohd Khir Ma`at, Norzarina |
| author_sort | Mohd Nor, Mohd Khir |
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| content_provider | Universiti Tun Hussein Onn Malaysia |
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| continent | Asia |
| country | Malaysia |
| description | Modelling finite strain deformation including shockwave propagation in orthotropic materials requires an appropriate description of material behaviour within elastic and plastic regimes hence can be very complex. One of the real challenges of this work is to accurately validate each of the proposed formulation since the corresponding algorithm implementation normally involves more than thousand lines of code. The validation process must be systematically conducted by stages from simple to complex behaviours. In this paper, a new approach was developed and established to guide through this processes by referring to the newly constitutive model formulation applicable for finite strain deformation. The chosen constitutive model was implemented into the DYNA3D source code. The validation process was performed by conducting a series of a single element analysis of a uniaxial strain test and uniaxial stress test. The formulations of elastic isotropy, elastic orthotropy and elastic-plastic isotropy orthotropy (with and without hardening) of the proposed formulation were examined and validated against DYNA3D Material Types 10, 22 and 33 respectively in this stage. To really ensure the book-keeping of the proposed algorithm is clean and efficient the analysis on multiple elements analysis was performed. For this purpose, a Plate Impact test has been adopted on the elastic isotropy and elastic orthotropy analyses. The capability of the proposed formulation to capture the dependence of material under consideration on strain rate and temperature was finally investigated. A good agreement with respect to various flow stress conditions was obtained. The results then established the capability of the proposed formulation and its algorithm implementation before validation against the selected experimental tests can be conducted. |
| format | Article |
| id | my.uthm.eprints-5307 |
| institution | Universiti Tun Hussein Onn Malaysia |
| language | en |
| publishDate | 2016 |
| publisher | Medwell Journals |
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| spelling | my.uthm.eprints-53072022-01-09T03:04:21Z http://eprints.uthm.edu.my/5307/ Simplified approach to validate constitutive model formulation of orthotropic materials undergoing finite strain deformation Mohd Nor, Mohd Khir Ma`at, Norzarina TA401-492 Materials of engineering and construction. Mechanics of materials Modelling finite strain deformation including shockwave propagation in orthotropic materials requires an appropriate description of material behaviour within elastic and plastic regimes hence can be very complex. One of the real challenges of this work is to accurately validate each of the proposed formulation since the corresponding algorithm implementation normally involves more than thousand lines of code. The validation process must be systematically conducted by stages from simple to complex behaviours. In this paper, a new approach was developed and established to guide through this processes by referring to the newly constitutive model formulation applicable for finite strain deformation. The chosen constitutive model was implemented into the DYNA3D source code. The validation process was performed by conducting a series of a single element analysis of a uniaxial strain test and uniaxial stress test. The formulations of elastic isotropy, elastic orthotropy and elastic-plastic isotropy orthotropy (with and without hardening) of the proposed formulation were examined and validated against DYNA3D Material Types 10, 22 and 33 respectively in this stage. To really ensure the book-keeping of the proposed algorithm is clean and efficient the analysis on multiple elements analysis was performed. For this purpose, a Plate Impact test has been adopted on the elastic isotropy and elastic orthotropy analyses. The capability of the proposed formulation to capture the dependence of material under consideration on strain rate and temperature was finally investigated. A good agreement with respect to various flow stress conditions was obtained. The results then established the capability of the proposed formulation and its algorithm implementation before validation against the selected experimental tests can be conducted. Medwell Journals 2016 Article PeerReviewed text en http://eprints.uthm.edu.my/5307/1/AJ%202017%20%28754%29.pdf Mohd Nor, Mohd Khir and Ma`at, Norzarina (2016) Simplified approach to validate constitutive model formulation of orthotropic materials undergoing finite strain deformation. Journal of Engineering and Applied Science, 11 (10). pp. 2146-2154. ISSN 1816-949X |
| spellingShingle | TA401-492 Materials of engineering and construction. Mechanics of materials Mohd Nor, Mohd Khir Ma`at, Norzarina Simplified approach to validate constitutive model formulation of orthotropic materials undergoing finite strain deformation |
| title | Simplified approach to validate constitutive model formulation of orthotropic materials undergoing finite strain deformation |
| title_full | Simplified approach to validate constitutive model formulation of orthotropic materials undergoing finite strain deformation |
| title_fullStr | Simplified approach to validate constitutive model formulation of orthotropic materials undergoing finite strain deformation |
| title_full_unstemmed | Simplified approach to validate constitutive model formulation of orthotropic materials undergoing finite strain deformation |
| title_short | Simplified approach to validate constitutive model formulation of orthotropic materials undergoing finite strain deformation |
| title_sort | simplified approach to validate constitutive model formulation of orthotropic materials undergoing finite strain deformation |
| topic | TA401-492 Materials of engineering and construction. Mechanics of materials |
| url | http://eprints.uthm.edu.my/5307/1/AJ%202017%20%28754%29.pdf http://eprints.uthm.edu.my/5307/ |
| url_provider | http://eprints.uthm.edu.my/ |