Mutual Reciprocal Interconnection of Relations Describing Creep, Yield Stress and Stress Relaxation
The steady-state creep rate increases with testing temperature according to the Arrhenius law and its increase with applied stress is usually described by the power law. Simple multiplication of these two laws leads to the dependence of steady-state creep rate on both the variables. Apparent activat...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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University of Žilina
2010-12-01
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| Series: | Communications |
| Subjects: | |
| Online Access: | https://komunikacie.uniza.sk/artkey/csl-201004-0006_mutual-reciprocal-interconnection-of-relations-describing-creep-yield-stress-and-stress-relaxation.php |
| _version_ | 1797847032004608000 |
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| author | Jan Kohout Vojtech Hruby |
| author_facet | Jan Kohout Vojtech Hruby |
| author_sort | Jan Kohout |
| collection | DOAJ |
| description | The steady-state creep rate increases with testing temperature according to the Arrhenius law and its increase with applied stress is usually described by the power law. Simple multiplication of these two laws leads to the dependence of steady-state creep rate on both the variables. Apparent activation energy and stress sensitivity parameter perform in the combined law as constants but most measurements show their dependence on some of the variables. An equation respecting these experimental facts and simultaneously also based on the Arrhenius equation and the power law is derived and verified using some published results of creep tests. It can be presented geometrically by hyperbolic paraboloid. Resulting from this equation, the dependence of yield stress on temperature and strain rate and also an equation describing the relaxation curves are deduced. |
| first_indexed | 2024-04-09T18:04:17Z |
| format | Article |
| id | doaj.art-6fa7951b672549a9bb7a8e5f58fe8bb0 |
| institution | Directory Open Access Journal |
| issn | 1335-4205 2585-7878 |
| language | English |
| last_indexed | 2024-04-09T18:04:17Z |
| publishDate | 2010-12-01 |
| publisher | University of Žilina |
| record_format | Article |
| series | Communications |
| spelling | doaj.art-6fa7951b672549a9bb7a8e5f58fe8bb02023-04-14T06:30:18ZengUniversity of ŽilinaCommunications1335-42052585-78782010-12-01124404410.26552/com.C.2010.4.40-44csl-201004-0006Mutual Reciprocal Interconnection of Relations Describing Creep, Yield Stress and Stress RelaxationJan Kohout0Vojtech Hruby1Department of Mathematics and Physics, Faculty of Military Technology, University of Defence, Brno, Czech RepublicDepartment of Mechanical Engineering, Faculty of Military Technology, University of Defence, Brno, Czech RepublicThe steady-state creep rate increases with testing temperature according to the Arrhenius law and its increase with applied stress is usually described by the power law. Simple multiplication of these two laws leads to the dependence of steady-state creep rate on both the variables. Apparent activation energy and stress sensitivity parameter perform in the combined law as constants but most measurements show their dependence on some of the variables. An equation respecting these experimental facts and simultaneously also based on the Arrhenius equation and the power law is derived and verified using some published results of creep tests. It can be presented geometrically by hyperbolic paraboloid. Resulting from this equation, the dependence of yield stress on temperature and strain rate and also an equation describing the relaxation curves are deduced.https://komunikacie.uniza.sk/artkey/csl-201004-0006_mutual-reciprocal-interconnection-of-relations-describing-creep-yield-stress-and-stress-relaxation.phpno keywords |
| spellingShingle | Jan Kohout Vojtech Hruby Mutual Reciprocal Interconnection of Relations Describing Creep, Yield Stress and Stress Relaxation Communications no keywords |
| title | Mutual Reciprocal Interconnection of Relations Describing Creep, Yield Stress and Stress Relaxation |
| title_full | Mutual Reciprocal Interconnection of Relations Describing Creep, Yield Stress and Stress Relaxation |
| title_fullStr | Mutual Reciprocal Interconnection of Relations Describing Creep, Yield Stress and Stress Relaxation |
| title_full_unstemmed | Mutual Reciprocal Interconnection of Relations Describing Creep, Yield Stress and Stress Relaxation |
| title_short | Mutual Reciprocal Interconnection of Relations Describing Creep, Yield Stress and Stress Relaxation |
| title_sort | mutual reciprocal interconnection of relations describing creep yield stress and stress relaxation |
| topic | no keywords |
| url | https://komunikacie.uniza.sk/artkey/csl-201004-0006_mutual-reciprocal-interconnection-of-relations-describing-creep-yield-stress-and-stress-relaxation.php |
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