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Elastoplastic response of a pipe bend using Prandtl operator approach in a finite element analysis [Elektronski vir]Šeruga, Domen ...Structural components are subjected to variable thermomechanical loads during use. These loads can lead to fatigue failure therefore it is important to detect potential weak points in the structure ... already during early stages of the R&D process. Reliable results of the stress-strain response are of crucial importance during the structural analyses. In this paper, a metallic pipe bend is subjected to a variable thermomechanical load and its structural response is investigated. The loads reach beyond the yield stress of the material, therefore an elastoplastic stress-strain response is observed. Prandtl operator approach, implemented into the finite element analysis, is used to simulate the response of the pipe bend. The approach enables fast and accurate structural simulations using the material parameters gained from uniaxial low-cycle fatigue testing at few test temperatures. The approach considers a cyclic elastoplastic material behaviour with multilinear kinematic hardening at variable temperatures. Comparison with the commonly used Besseling model shows a comparable stress-strain path simulation, but ensures a 30 % shorter computational time. Fatigue lifetime estimation differs for 4 % at the critical control point for the analysed thermomechanical load history.Source: 2nd International Workshop on Plasticity, Damage and Fracture of Engineering Materials (IWPDF 2021), 18-20 August 2021, Ankara, Turkey [Elektronski vir] (Vol. 35, 2022, str. 150-158)Type of material - conference contribution ; adult, seriousPublish date - 2022Language - englishCOBISS.SI-ID - 93442563
Author
Šeruga, Domen |
Klemenc, Jernej |
Oman, Simon, 1979- |
Nagode, Marko
Topics
metoda končnih elementov |
termomehansko utrujanje |
Prandtlov operator |
plastičnost |
utrujanje |
cevna kolena |
finite element method |
thermomechanical loading |
Prandtl operator |
plasticity |
fatigue |
pipe bends
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Šeruga, Domen | 29047 |
Klemenc, Jernej | 16334 |
Oman, Simon, 1979- | 26561 |
Nagode, Marko | 13469 |
Source: Personal bibliographies
and: SICRIS
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