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Computational Modeling of Nanoindentation
Kovář, Jaroslav ; Čech,, Jaroslav (referee) ; Dlouhý, Ivo (referee) ; Fuis, Vladimír (advisor)
Doctoral thesis is aimed on the computation modelling of a nanoindentation test. The informa-tional research of nanoindentation test and analytical models, which were used for derivation of the formulas for evaluation of measured data, is done in the introduction. Analytical models were derived with few simplifying assumptions, whose influence was analyzed in the computa-tional part of the thesis. This part is aimed on the computational modelling of nanoindentation test with the use of finite element method, especially the nanoindentation test of fused silica, steel and thin layers deposited on substrate. These models were used for refinement of calculations by the influence of radial displacements under the tip of indenter and correction coefficient for the indenter shape. In the next part, the influence of the indenter bluntness and tilt on its shape function was analyzed. The last part of the thesis dealing with thin layers was aimed on the verification of one tenth rule of thumb for determination of reduced modulus and hardness with the blunted and ideal Berkovich indenter.
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