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## Numerical simulation of penetration method using spherical and conical indenter

#### Abstract

The aim of this thesis was to analyse results of using conical and spherical indenter in penetration method. Residual stresses may appear as a result of forming, heat treatment or overloading the element. They exist regardless of load applied to the material. Therefore, they are not possible to be calculated by analytical methods. Penetration method uses an indenter in order to create an mark in the specimen. Next, the indentation is measured and on this basis stresses in the material may be evaluated. In this thesis FEM method was used to simulate behaviour of indentation made by both types of indenters. Firstly, a model of Hertz’s problem was modelled in order to verify results of numerical simulations against analytical solutions. Next, the problem of pressing spherical indenter into surface was analysed a number of times. Elastic-plastic material model has been assigned to specimen. Various configurations of forces and residual stresses were tested. Relationships between geometry of mark and applied stresses were concluded. Similar analysis were conducted using conical indenter. Finally, differences between results with spherical and conical indenter were concluded.
Diploma type
Engineer's / Bachelor of Science
Diploma type
Engineer's thesis
Author
Adam Franciszek Czech (FPAE) Adam Franciszek Czech,, Faculty of Power and Aeronautical Engineering (FPAE)
Title in Polish
Symulacja numeryczna metody penetratora z zastosowaniem wgłębnika kulistego i stoikowego
Supervisor
Grzegorz Krzesiński (FPAE/IAAM) Grzegorz Krzesiński,, The Institute of Aeronautics and Applied Mechanics (FPAE/IAAM)Faculty of Power and Aeronautical Engineering (FPAE)
Certifying unit
Faculty of Power and Aeronautical Engineering (FPAE)
Affiliation unit
The Institute of Aeronautics and Applied Mechanics (FPAE/IAAM)
Study subject / specialization
, Mechanika i Budowa Maszyn
Language
(pl) Polish
Status
Finished
Defense Date
23-09-2019
Issue date (year)
2019
Pages
117
Internal identifier
MEL; PD-5249
Reviewers
Grzegorz Krzesiński (FPAE/IAAM) Grzegorz Krzesiński,, The Institute of Aeronautics and Applied Mechanics (FPAE/IAAM)Faculty of Power and Aeronautical Engineering (FPAE) Adam Dacko (FPAE/IAAM) Adam Dacko,, The Institute of Aeronautics and Applied Mechanics (FPAE/IAAM)Faculty of Power and Aeronautical Engineering (FPAE)
Keywords in Polish
naprężenia własne, metoda penetratora, metoda elementów skończonych, plastyczność
Keywords in English
residual stress, penetration method, finite element method
Abstract in Polish
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urn:pw-repo:WUT36df08095c0d470183ad938cb5d99a4e