Study of the upper die clamping conditions in the small punch test

0465506 - ÚFM 2017 RIV NL eng J - Journal Article
Andrés, D. - Dymáček, Petr
Study of the upper die clamping conditions in the small punch test.
Theoretical and Applied Fracture Mechanics. 86A, DEC (2016), s. 117-123. ISSN 0167-8442. E-ISSN 1872-7638
R&D Projects: GA MŠMT(CZ) ED1.1.00/02.0068
Institutional support: RVO:68081723
Keywords : Small punch test * Finite element method * Parametric study * High temperature * Creep
Subject RIV: JL - Materials Fatigue, Friction Mechanics
Impact factor: 2.659, year: 2016
http://www.sciencedirect.com/science/article/pii/S0167844216301835

A parametric study of small punch tests on miniaturized discs under constant deflection rate and constant force has been performed to study the influence of various upper die conditions on the test results. A comparison between the experimental results and the simulations by means of the finite element method is presented, under different clamping conditions. Heat resistant steel P22 has been selected for this investigation. The elasto-plastic behaviour of the disc was described by multilinear isotropic hardening. Norton power-law and exponential creep constitutive relationships have been applied in the ANSYS FE model of the SPT arrangement under creep conditions. The investigation confirms relatively small influence of the upper die conditions for both types of small punch tests for the steel under investigation.
Permanent Link: http://hdl.handle.net/11104/0264440