TY - JOUR

T1 - Assessment of Residual Stresses in a T-joint Weld by Combined Experimental/Theoretical Approach

AU - Tagiltsev, I. I.

AU - Shutov, A. V.

N1 - Funding Information: The financial support provided by the Russian Science Foundation (project No. acknowledged. Publisher Copyright: © Published under licence by IOP Publishing Ltd. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/6/29

Y1 - 2021/6/29

N2 - Residual stresses are common in metal structures, essentially influencing their mechanical behaviour. We consider a combined experimental/theoretical approach to residual stresses. The theoretical basis of analysis is provided by the recently developed F0-approach, operating with explicit relation between load-free and stress-free configurations. The titanium alloy Ti-6Al-4V is modelled with the multiplicative decomposition of the deformation gradient into the elastic and the plastic parts. Isotropic hyperelastic relations between stresses and elastic strains are assumed. The weak invariance of the material model allows for incorporation of residual stresses without additional numerical costs. In order to demonstrate the new experimental/theoretical approach to residual stresses, experimentally measured stresses are extrapolated from the surface inside the welded T-joint. The robustness of the stress extrapolation procedure is confirmed on synthetic experimental data.

AB - Residual stresses are common in metal structures, essentially influencing their mechanical behaviour. We consider a combined experimental/theoretical approach to residual stresses. The theoretical basis of analysis is provided by the recently developed F0-approach, operating with explicit relation between load-free and stress-free configurations. The titanium alloy Ti-6Al-4V is modelled with the multiplicative decomposition of the deformation gradient into the elastic and the plastic parts. Isotropic hyperelastic relations between stresses and elastic strains are assumed. The weak invariance of the material model allows for incorporation of residual stresses without additional numerical costs. In order to demonstrate the new experimental/theoretical approach to residual stresses, experimentally measured stresses are extrapolated from the surface inside the welded T-joint. The robustness of the stress extrapolation procedure is confirmed on synthetic experimental data.

UR - http://www.scopus.com/inward/record.url?scp=85109217846&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/1945/1/012059

DO - 10.1088/1742-6596/1945/1/012059

M3 - Conference article

AN - SCOPUS:85109217846

VL - 1945

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 1

M1 - 012059

T2 - 22nd Winter School on Continuous Media Mechanics, WSCMM 2021

Y2 - 22 March 2021 through 26 March 2021

ER -