Effect of the Rigid Interlayer Thickness on the Stress-Strain State of Metal-Graphite Assemblies Under Thermal Loading
| Autor: | M. V. Matvienko, V. A. Martynenko, A. V. Labartkava, G. V. Ermolaev, S. V. Olekseenko |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
0209 industrial biotechnology Materials science Stress–strain curve 02 engineering and technology Welding Diffusion welding 01 natural sciences law.invention Stress (mechanics) Stress field 020901 industrial engineering & automation Mechanics of Materials law 0103 physical sciences Butt joint Brazing Graphite Composite material |
| Zdroj: | Strength of Materials. 49:422-428 |
| ISSN: | 1573-9325 0039-2316 |
| DOI: | 10.1007/s11223-017-9882-4 |
| Popis: | The effect of the rigid interlayer thickness on the stress-strain state of the assemblies from dissimilar materials on their diffusion welding and brazing was evaluated. Computer simulation was used to solve the axisymmetric elastoplastic problem for rapid assembly cooling after welding. Stress fields and epures were compared at different interlayer thicknesses and in its absence. All stresses in the assembly were established to concentrate in the immediate vicinity of the material-interlayer butt joint. Stress field patterns in the joined materials do not greatly change with interlayer thickness variations, however, stress levels are changing. With an increase in the interlayer thickness, the maximum point of tensile stresses in graphite is gradually moving away from the butt joint, and its value decreases. For reducing the risk of graphite fracture after assembly cooling, it would be appropriate to use a rigid interlayer no less than 1 mm thick. |
| Databáze: | OpenAIRE |
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