Compressive Creep Measurements of Fired Magnesia Bricks at Elevated Temperatures Including Creep Law Parameter Identification and Evaluation by Finite Element Analysis
| العنوان: | Compressive Creep Measurements of Fired Magnesia Bricks at Elevated Temperatures Including Creep Law Parameter Identification and Evaluation by Finite Element Analysis |
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| المؤلفون: | Guenter Unterreiter, Daniel Kreuzer, Hans U. Marschall, Gernot Hackl, Robert Machhammer, Bernd Lorenzoni, Christoph Wagner |
| المصدر: | Ceramics Volume 3 Issue 2 Pages 19-222 Ceramics, Vol 3, Iss 19, Pp 210-222 (2020) |
| بيانات النشر: | MDPI AG, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Materials science, Young's modulus, finite element analysis, 02 engineering and technology, lcsh:Chemical technology, lcsh:Technology, 01 natural sciences, Physics::Geophysics, symbols.namesake, Condensed Matter::Superconductivity, 0103 physical sciences, lcsh:TP1-1185, compressive creep, Electric arc furnace, 010302 applied physics, Brick, fired magnesia bricks, lcsh:T, Ferrochrome, Norton-Bailey, Direct current, General Medicine, creep law parameter identification, 021001 nanoscience & nanotechnology, Compression (physics), Finite element method, Creep, Law, symbols, 0210 nano-technology |
| الوصف: | Creep behavior is very important for the selection of refractory materials. This paper presents a methodology to measure the compressive creep behavior of fired magnesia materials at elevated temperatures. The measurements were carried out at 1150&ndash 1500 ° C and under compression loads from 1&ndash 8 MPa. Creep strain was calculated from the measured total strain data. The obtained creep deformations of the experimental investigations were subjected to detailed analysis to identify the Norton-Bailey creep law parameters. The modulus of elasticity was determined in advance to simplify the inverse estimation process for finding the Norton-Bailey creep parameters. In the next step an extended material model including creep was used in a finite element analysis (FEA) and the creep testing procedure was reproduced numerically. Within the investigated temperature and load range the creep deformations calculated by FEA demonstrated a good agreement with the results of the experimental investigations. Finally a finite element unit cell model of a quarter brick representing a section of the lining of a ferrochrome (FeCr) electric arc furnace (direct current) was used to assess the thermo-mechanical stresses and strains including creep during a heat-up procedure. The implementation of the creep behavior into the design process led to an improved prediction of strains and stresses. |
| وصف الملف: | application/pdf |
| تدمد: | 2571-6131 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::33dccacb629735fcec0890dd53a83dac https://doi.org/10.3390/ceramics3020019 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....33dccacb629735fcec0890dd53a83dac |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 25716131 |
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