| Autor: |
Zhang, Q., Lambropoulos, J. C. |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; 2/15/2007, Vol. 101 Issue 4, p043105-N.PAG, 6p, 1 Diagram, 5 Graphs |
| Abstrakt: |
A finite element model (FEM) of calcium fluoride (CaF2) with a rate-dependent mesoplastic constitutive formulation was developed and compared with nanoindentation tests. Indentations on the three main crystallographic planes (100), (110), and (111) of (CaF2) were analyzed. Appropriate material parameters were obtained by correlating the FEM results and the corresponding experimental load-displacement curves. The simulations show a value in the range of 74–110 MPa for the initial shear yield strength and a value in the range of 100–180 MPa for the self-hardening modulus. Such estimates can be used to examine the detailed stress distribution induced by the indentation. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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