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Modelling And Simul...
Modelling And Simulation The Cracking Of Green Metal Powder Body
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- Häggblad, Hans-åke (author)
- Luleå tekniska universitet,Material- och solidmekanik
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- Jonsén, Pär (author)
- Luleå tekniska universitet,Material- och solidmekanik
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- Gustafsson, Gustaf (author)
- Luleå tekniska universitet,Material- och solidmekanik
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- Oldenburg, Mats (author)
- Luleå tekniska universitet,Material- och solidmekanik
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- Golling, Stefan (author)
- Luleå tekniska universitet,Material- och solidmekanik
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(creator_code:org_t)
- European Powder Metallurgy Association, 2016
- 2016
- English.
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In: Proceedings World PM2016 Congress. - : European Powder Metallurgy Association. - 9781899072484
- Related links:
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https://urn.kb.se/re...
Abstract
Subject headings
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- During the ejection stage of the powder metallurgy (PM) pressing process the elastic behaviour is important. Especially, if the in the powder compact is unloaded in a non-beneficially manner crack formation can occur. Experiments show a non-linear and also stress dependent elastic behaviour of green bodies. Calibrated against experimental data, a fracture model controlling the stress versus crack-width relationship is used. The softening rate of the fracture model is obtained from the corresponding rate of the dissipated energy. The model is implemented with a smeared crack approach in a finite element code and tested in simulation of a diametral compression testing. Results from simulations correlates well with experimental results. The smeared crack method combined with a cohesive fracture model is an interesting tool for predicting fracture in powder compacts.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
Keyword
- Hållfasthetslära
- Solid Mechanics
Publication and Content Type
- ref (subject category)
- kon (subject category)
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