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Constitutive model ...
Constitutive model for thermomechanical fatigue conditions of an additively manufactured combustor alloy
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- Lindström, Thomas (author)
- Linköpings universitet,Mekanik och hållfasthetslära,Tekniska fakulteten
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- Nilsson, Daniel (author)
- Siemens Energy AB, Sweden
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- Simonsson, Kjell (author)
- Linköpings universitet,Mekanik och hållfasthetslära,Tekniska fakulteten
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- Eriksson, Robert (author)
- Linköpings universitet,Mekanik och hållfasthetslära,Tekniska fakulteten
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- Lundgren, Jan-Erik (author)
- Siemens Energy AB, Sweden
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- Leidermark, Daniel (author)
- Linköpings universitet,Mekanik och hållfasthetslära,Tekniska fakulteten
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(creator_code:org_t)
- Elsevier, 2022
- 2022
- English.
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In: Mechanics of materials. - : Elsevier. - 0167-6636 .- 1872-7743. ; 168
- Related links:
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https://liu.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- In this study, the mechanical response of an additively manufactured nickel-based combustor alloy, subjected to thermomechanical fatigue (TMF) loadings has been investigated and modelled. TMF tests were performed in both in-phase and out-of-phase conditions with different strain ranges and temperature ranges of 100 degrees C-450 degrees C and 100 degrees C-600 degrees C, respectively. The smooth specimens were manufactured in two different orientations to study the influence of anisotropy, and the specimens were machined to final dimensions with conventional techniques. A constitutive model with focus on describing the mid-life behaviour was developed where the total inelastic strain was divided into one plastic (rate-independent) and one creep (rate-dependent) part, to be able to describe both the rate-dependent effects from TMF conditions as well as rate-independent responses. A cycle jumping procedure was used, which enables to simulate the mid-life response of the material for TMF as well as low-cycle fatigue conditions within three simulated loading cycles.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
Keyword
- Anisotropic material; Additive manufacturing; Elastic-viscoplastic material; Finite elements; Thermomechanical fatigue
Publication and Content Type
- ref (subject category)
- art (subject category)
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