Line strain representation and shear strain representation of 3D strain states.
The strain state in 3D space is usually expressed by the conventional method of combining three linear and shear strains. Due to the obvious differences between the first two strains, it is necessary to uncover their properties when describing deformation, studying yield and failure, and developing...
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Public Library of Science (PLoS)
2021
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oai:doaj.org-article:1a91b3b1e8234e539d601483f03794f22021-12-02T20:12:51ZLine strain representation and shear strain representation of 3D strain states.1932-620310.1371/journal.pone.0259655https://doaj.org/article/1a91b3b1e8234e539d601483f03794f22021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0259655https://doaj.org/toc/1932-6203The strain state in 3D space is usually expressed by the conventional method of combining three linear and shear strains. Due to the obvious differences between the first two strains, it is necessary to uncover their properties when describing deformation, studying yield and failure, and developing test apparatus or equipment. The difficulties encountered in the above work would be greatly simplified if strain states could be expressed in a single strain form, namely including only linear or shear strains. As a start, this paper explores the meaning and nature of strain states. Then, based on the hypothesis of small deformations, two strain state expressions, the linear strain expression method (LSEM) and shear strain expression method (SSEM), were established for incompressible materials with only linear strain and shear strain as parameters respectively. Furthermore, conditions, implementation steps and specific forms for the application of SSEM in 1D, 2D and 3D strain states are obtained. As an example, two representations based on tetragonal pyramid and rotating tetrahedron are especially given. Therefore, conventional strain representation methods can be expressed as a combination of line strains in a certain direction or a combination of characteristic shear strains. The results of this paper provide a new way for understanding deformation characteristics, revealing yielding process, establishing constitutive models, and developing testing apparatus or equipment.Shunqun LiXuelei ChengJianbao FuLin PanRan HaiPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 11, p e0259655 (2021) |
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Medicine R Science Q Shunqun Li Xuelei Cheng Jianbao Fu Lin Pan Ran Hai Line strain representation and shear strain representation of 3D strain states. |
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The strain state in 3D space is usually expressed by the conventional method of combining three linear and shear strains. Due to the obvious differences between the first two strains, it is necessary to uncover their properties when describing deformation, studying yield and failure, and developing test apparatus or equipment. The difficulties encountered in the above work would be greatly simplified if strain states could be expressed in a single strain form, namely including only linear or shear strains. As a start, this paper explores the meaning and nature of strain states. Then, based on the hypothesis of small deformations, two strain state expressions, the linear strain expression method (LSEM) and shear strain expression method (SSEM), were established for incompressible materials with only linear strain and shear strain as parameters respectively. Furthermore, conditions, implementation steps and specific forms for the application of SSEM in 1D, 2D and 3D strain states are obtained. As an example, two representations based on tetragonal pyramid and rotating tetrahedron are especially given. Therefore, conventional strain representation methods can be expressed as a combination of line strains in a certain direction or a combination of characteristic shear strains. The results of this paper provide a new way for understanding deformation characteristics, revealing yielding process, establishing constitutive models, and developing testing apparatus or equipment. |
format |
article |
author |
Shunqun Li Xuelei Cheng Jianbao Fu Lin Pan Ran Hai |
author_facet |
Shunqun Li Xuelei Cheng Jianbao Fu Lin Pan Ran Hai |
author_sort |
Shunqun Li |
title |
Line strain representation and shear strain representation of 3D strain states. |
title_short |
Line strain representation and shear strain representation of 3D strain states. |
title_full |
Line strain representation and shear strain representation of 3D strain states. |
title_fullStr |
Line strain representation and shear strain representation of 3D strain states. |
title_full_unstemmed |
Line strain representation and shear strain representation of 3D strain states. |
title_sort |
line strain representation and shear strain representation of 3d strain states. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2021 |
url |
https://doaj.org/article/1a91b3b1e8234e539d601483f03794f2 |
work_keys_str_mv |
AT shunqunli linestrainrepresentationandshearstrainrepresentationof3dstrainstates AT xueleicheng linestrainrepresentationandshearstrainrepresentationof3dstrainstates AT jianbaofu linestrainrepresentationandshearstrainrepresentationof3dstrainstates AT linpan linestrainrepresentationandshearstrainrepresentationof3dstrainstates AT ranhai linestrainrepresentationandshearstrainrepresentationof3dstrainstates |
_version_ |
1718374809258164224 |