On the use of the Theory of Critical Distances to estimate the dynamic strength of notched 6063-T5 aluminium alloy
In this paper the so-called Theory of Critical Distances is reformulated to make it suitable for estimating the strength of notched metals subjected to dynamic loading. The TCD takes as its starting point the assumption that engineering materials’ strength can accurately be predicted by directly pos...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2014-09-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/1340 |
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| author | T. Yin A. Tyas O. Plekhov A. Terekhina L. Susmel |
| author_facet | T. Yin A. Tyas O. Plekhov A. Terekhina L. Susmel |
| author_sort | T. Yin |
| collection | DOAJ |
| description | In this paper the so-called Theory of Critical Distances is reformulated to make it suitable for estimating the strength of notched metals subjected to dynamic loading. The TCD takes as its starting point the assumption that engineering materials’ strength can accurately be predicted by directly post-processing the entire linear-elastic stress field acting on the material in the vicinity of the stress concentrator being assessed. In order to extend the used of the TCD to situations involving dynamic loading, the hypothesis is formed that the required critical distance (which is treated as a material property) varies as the loading rate increases. The accuracy and reliability of this novel reformulation of the TCD was checked against a number of experimental results generated by testing notched cylindrical bars of Al6063-T5. This validation exercise allowed us to prove that the TCD (applied in the form of the Point, Line, and Area Method) is capable of estimates falling within an error interval of ±20%. This result is very promising especially in light of the fact that such a design method can be used in situations of practical interest without the need for explicitly modelling the non-linear stress vs. strain dynamic behaviour of metals. |
| format | Article |
| id | doaj-art-e1a4f3893c2240caa6eac00028283730 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2014-09-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-e1a4f3893c2240caa6eac000282837302025-01-03T01:03:09ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932014-09-01830On the use of the Theory of Critical Distances to estimate the dynamic strength of notched 6063-T5 aluminium alloyT. Yin0A. Tyas1O. Plekhov2A. Terekhina3L. Susmel4Department of Civil and Structural Engineering, The University of Sheffield, Sheffield S1 3JD, United KingdomDepartment of Civil and Structural Engineering, The University of Sheffield, Sheffield S1 3JD, United KingdomInstitute of Continuous Media Mechanics UB RAS - 1, Ak. Koroleva str., 614013 Perm, RussiaInstitute of Continuous Media Mechanics UB RAS - 1, Ak. Koroleva str., 614013 Perm, RussiaDepartment of Civil and Structural Engineering, The University of Sheffield, Sheffield S1 3JD, United KingdomIn this paper the so-called Theory of Critical Distances is reformulated to make it suitable for estimating the strength of notched metals subjected to dynamic loading. The TCD takes as its starting point the assumption that engineering materials’ strength can accurately be predicted by directly post-processing the entire linear-elastic stress field acting on the material in the vicinity of the stress concentrator being assessed. In order to extend the used of the TCD to situations involving dynamic loading, the hypothesis is formed that the required critical distance (which is treated as a material property) varies as the loading rate increases. The accuracy and reliability of this novel reformulation of the TCD was checked against a number of experimental results generated by testing notched cylindrical bars of Al6063-T5. This validation exercise allowed us to prove that the TCD (applied in the form of the Point, Line, and Area Method) is capable of estimates falling within an error interval of ±20%. This result is very promising especially in light of the fact that such a design method can be used in situations of practical interest without the need for explicitly modelling the non-linear stress vs. strain dynamic behaviour of metals.https://www.fracturae.com/index.php/fis/article/view/1340Theory of Critical Distances |
| spellingShingle | T. Yin A. Tyas O. Plekhov A. Terekhina L. Susmel On the use of the Theory of Critical Distances to estimate the dynamic strength of notched 6063-T5 aluminium alloy Fracture and Structural Integrity Theory of Critical Distances |
| title | On the use of the Theory of Critical Distances to estimate the dynamic strength of notched 6063-T5 aluminium alloy |
| title_full | On the use of the Theory of Critical Distances to estimate the dynamic strength of notched 6063-T5 aluminium alloy |
| title_fullStr | On the use of the Theory of Critical Distances to estimate the dynamic strength of notched 6063-T5 aluminium alloy |
| title_full_unstemmed | On the use of the Theory of Critical Distances to estimate the dynamic strength of notched 6063-T5 aluminium alloy |
| title_short | On the use of the Theory of Critical Distances to estimate the dynamic strength of notched 6063-T5 aluminium alloy |
| title_sort | on the use of the theory of critical distances to estimate the dynamic strength of notched 6063 t5 aluminium alloy |
| topic | Theory of Critical Distances |
| url | https://www.fracturae.com/index.php/fis/article/view/1340 |
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