Determination of Directional Residual Stresses by the Contour Method

0517487 - ÚJF 2020 RIV CH eng J - Journal Article
Hodek, J. - Prantl, A. - Dzugan, J. - Strunz, Pavel
Determination of Directional Residual Stresses by the Contour Method.
Metals. Roč. 9, č. 10 (2019), č. článku 1104. E-ISSN 2075-4701
R&D Projects: GA MŠMT LM2015056
Institutional support: RVO:61389005
Keywords : contour method * residual stress * finite-element method * wire EDM * neutron diffraction
OECD category: Materials engineering
Impact factor: 2.117, year: 2019
Method of publishing: Open access
https://doi.org/10.3390/met9101104

This study evaluated residual stresses in heat-treated specimens made of 316L stainless steel using FE analysis and compared them with stresses determined by the contour method. Contour method is usually used just for evaluation of residual stresses that are normal to the cut plan. In the current study this approach is extended and both normal and tangential stresses are determined. The specimens were cut using wire electrical discharge machine and the contours of the cut were measured using a coordinate measuring machine. The prior treatment of the specimens was simulated using the finite-element method. An appropriate boundary condition and temperature-dependent material model were employed. The finite-element model was validated against neutron-diffraction measurement data. The results showed a good agreement in normal and tangential directions of stress.
Permanent Link: http://hdl.handle.net/11104/0302814