Identification of ductile damage parameters for pressure vessel steel

Kód výsledku v IS VaVaI

RIV/26316919:_____/18:N0000003 - isvavai.cz

Nalezeny alternativní kódy

RIV/68407700:21220/18:00240066

Výsledek na webu

http://dx.doi.org/10.1016/j.nucengdes.2015.12.014

DOI - Digital Object Identifier

10.1016/j.nucengdes.2015.12.014

Jazyk výsledku

angličtina

Název v původním jazyce

Identification of ductile damage parameters for pressure vessel steel

Popis výsledku v původním jazyce

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. If states near to ductile fracture are to be considered, more complex material description taking into account multiaxial loading conditions is necessary. As complex material models suitable to include these effects into practical simulations are still mostly phenomenological, experiments with 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 stress 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. This paper deals 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 preliminary 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. © 2016 Elsevier B.V.

Název v anglickém jazyce

Identification of ductile damage parameters for pressure vessel steel

Popis výsledku anglicky

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. If states near to ductile fracture are to be considered, more complex material description taking into account multiaxial loading conditions is necessary. As complex material models suitable to include these effects into practical simulations are still mostly phenomenological, experiments with 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 stress 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. This paper deals 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 preliminary 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. © 2016 Elsevier B.V.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20306 - Audio engineering, reliability analysis

Projekt

TA02010992: Vývoj a verifikace nových numerických metod svařování a tepelného zpracování, včetně zjednodušené numerické predikce životnosti svarových spojů, pro progresivní materiály využívané v energetice, leteckém a případně i kosmickém průmyslu.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

NUCLEAR ENGINEERING AND DESIGN

ISSN

0029-5493

e-ISSN

1872-759X

Svazek periodika

328

Číslo periodika v rámci svazku

2018

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

9

Strana od-do

372-380

Kód UT WoS článku

000427432300034

EID výsledku v databázi Scopus

2-s2.0-84953775734