Finite element analysis of nanoindentation pile-up and correction of projected contact area
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F24%3APU155776" target="_blank" >RIV/00216305:26210/24:PU155776 - isvavai.cz</a>
Výsledek na webu
<a href="https://ojs.cvut.cz/ojs/index.php/APP/article/view/10356" target="_blank" >https://ojs.cvut.cz/ojs/index.php/APP/article/view/10356</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.14311/APP.2024.50.0018" target="_blank" >10.14311/APP.2024.50.0018</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Finite element analysis of nanoindentation pile-up and correction of projected contact area
Popis výsledku v původním jazyce
This paper deals with the pile-up phenomenon that can occur during nanoindentation. Finite Element (FE) simulation of X5CrNiCuNb16-4 steel nanoindentation with pyramidal Berkovich indenter was done, and stress and strain beneath the indenter leading to pile-up behavior were analyzed in detail. Pile-up also influences the projected contact area, which should be corrected to include the pile-up into the Oliver-Pharr analysis. Accurate calculation of the projected contact area requires knowledge of its boundary. Few methods of boundary approximation were used, including approximation by the triangle and the semi-ellipse. For more precise approximation, the expression for parabolical approximation was derived. These methods were compared with the projected contact area calculated by finite element method. The most precise results were obtained using semi-elliptical and parabolical correction, which can be used for the determination of the projected contact area and its boundary.
Název v anglickém jazyce
Finite element analysis of nanoindentation pile-up and correction of projected contact area
Popis výsledku anglicky
This paper deals with the pile-up phenomenon that can occur during nanoindentation. Finite Element (FE) simulation of X5CrNiCuNb16-4 steel nanoindentation with pyramidal Berkovich indenter was done, and stress and strain beneath the indenter leading to pile-up behavior were analyzed in detail. Pile-up also influences the projected contact area, which should be corrected to include the pile-up into the Oliver-Pharr analysis. Accurate calculation of the projected contact area requires knowledge of its boundary. Few methods of boundary approximation were used, including approximation by the triangle and the semi-ellipse. For more precise approximation, the expression for parabolical approximation was derived. These methods were compared with the projected contact area calculated by finite element method. The most precise results were obtained using semi-elliptical and parabolical correction, which can be used for the determination of the projected contact area and its boundary.
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
—
OECD FORD obor
20302 - Applied mechanics
Návaznosti výsledku
Projekt
—
Návaznosti
S - Specificky vyzkum na vysokych skolach
Ostatní
Rok uplatnění
2024
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
Acta Polytechnica CTU Proceedings
ISBN
9788001073865
ISSN
2336-5382
e-ISSN
—
Počet stran výsledku
6
Strana od-do
18-23
Název nakladatele
Czech Technical University in Prague
Místo vydání
Praha
Místo konání akce
Praha
Datum konání akce
29. 5. 2024
Typ akce podle státní příslušnosti
WRD - Celosvětová akce
Kód UT WoS článku
—