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| Description
| - The FEM simulations in the field of design and safety assessment represent very powerful tools, but they are strongly limited by available material models and material input data. Many of the current calculations are still performed on the basis of standard tensile tests, if not only on database data or data from literature. Such a material description is not sufficient for an accurate design assessment and detailed material behavior description has to be used for a reliable results. The standard tensile test results are useful for elastic solutions or elastic-plastic solution for a small plastic strains. If states near to fracture are to be considered, more complex material description taking into account multiaxial loading conditions is necessary; Bai (2008, 2010), Wierbitzski (2005), Bao (2004), Li (2009). Thus samples of various geometries tested under various loading modes have to be used. On the basis of these tests a complex material behavior model covering elastic and plastic material behavior for various triaxiality states can be obtained. This kind of the material behavior description allows a wide range of application from calculation of component limit loading conditions to material properties conversion for samples of different sizes e.g.. The Current paper is dealing with ductile damage parameters determination for two typical Reactor Pressure Vessel (RPV) steels ferritic and austenitic. The ferritic steel is used for the RPV vessel and the austenitic one is used for internals. There are chosen appropriate samples geometries based on the FEM stress state analyses of samples at first. Subsequently, testing of proposed samples is performed and material parameters are evaluated. The obtained material plastic damage parameters are subsequently applied to FEM simulation of sharp notched samples and capabilities of applied models to describe material behavior for high stress concentrations is assessed on the basis comparison with real tests.
- The FEM simulations in the field of design and safety assessment represent very powerful tools, but they are strongly limited by available material models and material input data. Many of the current calculations are still performed on the basis of standard tensile tests, if not only on database data or data from literature. Such a material description is not sufficient for an accurate design assessment and detailed material behavior description has to be used for a reliable results. The standard tensile test results are useful for elastic solutions or elastic-plastic solution for a small plastic strains. If states near to fracture are to be considered, more complex material description taking into account multiaxial loading conditions is necessary; Bai (2008, 2010), Wierbitzski (2005), Bao (2004), Li (2009). Thus samples of various geometries tested under various loading modes have to be used. On the basis of these tests a complex material behavior model covering elastic and plastic material behavior for various triaxiality states can be obtained. This kind of the material behavior description allows a wide range of application from calculation of component limit loading conditions to material properties conversion for samples of different sizes e.g.. The Current paper is dealing with ductile damage parameters determination for two typical Reactor Pressure Vessel (RPV) steels ferritic and austenitic. The ferritic steel is used for the RPV vessel and the austenitic one is used for internals. There are chosen appropriate samples geometries based on the FEM stress state analyses of samples at first. Subsequently, testing of proposed samples is performed and material parameters are evaluated. The obtained material plastic damage parameters are subsequently applied to FEM simulation of sharp notched samples and capabilities of applied models to describe material behavior for high stress concentrations is assessed on the basis comparison with real tests. (en)
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| Title
| - Identification of ductile damage parameters for pressure vessel steel
- Identification of ductile damage parameters for pressure vessel steel (en)
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| skos:prefLabel
| - Identification of ductile damage parameters for pressure vessel steel
- Identification of ductile damage parameters for pressure vessel steel (en)
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| skos:notation
| - RIV/26316919:_____/14:#0000625!RIV15-TA0-26316919
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/26316919:_____/14:#0000625
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - ductile damage, fracture mechanics, fracture locus (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...v/mistoKonaniAkce
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| http://linked.open...i/riv/mistoVydani
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| http://linked.open...i/riv/nazevZdroje
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...iv/tvurceVysledku
| - Prantl, A.
- Růžička, J.
- Konopík, Pavel
- Džugan, Jan
- Kuželka, J.
- Španiel, M.
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| http://linked.open...vavai/riv/typAkce
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| http://linked.open.../riv/zahajeniAkce
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| number of pages
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| http://purl.org/ne...btex#hasPublisher
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| https://schema.org/isbn
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