Detail publikace

Finite element analysis of nanoindentation pile-up and correction of projected contact area

KOVÁŘ, J. FUIS, V. ČTVRTLÍK, R. TOMÁŠTÍK, J.

Anglický název

Finite element analysis of nanoindentation pile-up and correction of projected contact area

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

en

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova anglicky

nanoindentation, Berkovich indenter, pile-up, parabolical correction, steel, finite element method

Vydáno

17.12.2024

Nakladatel

Czech Technical University in Prague

Místo

Praha

ISBN

9788001073865

ISSN

2336-5382

Kniha

Acta Polytechnica CTU Proceedings

Ročník

50

Číslo edice

50

Strany od–do

18–23

Počet stran

6

BIBTEX


@inproceedings{BUT197035,
  author="Jaroslav {Kovář} and Vladimír {Fuis} and Radim {Čtvrtlík} and Jan {Tomáštík},
  title="Finite element analysis of nanoindentation pile-up and correction of projected contact area",
  booktitle="Acta Polytechnica CTU Proceedings",
  year="2024",
  volume="50",
  month="December",
  pages="18--23",
  publisher="Czech Technical University in Prague",
  address="Praha",
  isbn="9788001073865",
  issn="2336-5382"
}