Combined experimental–numerical study on residual stresses induced by a single impact as elementary process of mechanical peening
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In: Strain, Vol. 56, No. 4, e12338, 01.08.2020.
Research output: Journal contributions › Journal articles › Research › peer-review
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TY - JOUR
T1 - Combined experimental–numerical study on residual stresses induced by a single impact as elementary process of mechanical peening
AU - Sandmann, Paul
AU - Nielsen, Marc André
AU - Keller, Sören
AU - Maawad, Emad
AU - Staron, Peter
AU - Klusemann, Benjamin
N1 - Funding Information: We acknowledge Deutsches Elektronen-Synchroton (DESY), Germany, for the provision of the synchrotron radiation facilities at beamline P07B of Helmholtz-Zentrum Geesthacht. This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors. Publisher Copyright: © 2020 The Authors. Strain published by John Wiley & Sons, Ltd
PY - 2020/8/1
Y1 - 2020/8/1
N2 - Peening processes can be used as a fatigue enhancement treatment for metallic structures by locally introducing compressive residual stresses. A combined experimental–numerical study on a single-impact process with a drop tower on the aluminium alloy AA5754, representing the elementary process of mechanical peening, has been performed to investigate different impact parameters on the residual stress profile. Residual stresses have been measured using high-energy X-Ray diffraction. A three-dimensional finite element model is used to predict the residual stresses numerically. The elastic strain components from the numerical results are used to calculate residual stresses by assuming either a plane stress or a plane strain state for different specimen thickness to assess the validity of respective assumption. The validity of the numerical simulation is evaluated based on comparisons of the elastic strain profiles and the percentage loss in kinetic energy of the steel ball due to the impact for four different energies, showing overall a good agreement in the experimental–numerical comparisons.
AB - Peening processes can be used as a fatigue enhancement treatment for metallic structures by locally introducing compressive residual stresses. A combined experimental–numerical study on a single-impact process with a drop tower on the aluminium alloy AA5754, representing the elementary process of mechanical peening, has been performed to investigate different impact parameters on the residual stress profile. Residual stresses have been measured using high-energy X-Ray diffraction. A three-dimensional finite element model is used to predict the residual stresses numerically. The elastic strain components from the numerical results are used to calculate residual stresses by assuming either a plane stress or a plane strain state for different specimen thickness to assess the validity of respective assumption. The validity of the numerical simulation is evaluated based on comparisons of the elastic strain profiles and the percentage loss in kinetic energy of the steel ball due to the impact for four different energies, showing overall a good agreement in the experimental–numerical comparisons.
KW - Engineering
KW - aluminium alloys
KW - elementary peening process
KW - finite element analysis
KW - residual stress
KW - single mechanical impact
KW - X-ray diffraction
UR - http://www.scopus.com/inward/record.url?scp=85084508819&partnerID=8YFLogxK
U2 - 10.1111/str.12338
DO - 10.1111/str.12338
M3 - Journal articles
AN - SCOPUS:85084508819
VL - 56
JO - Strain
JF - Strain
SN - 0039-2103
IS - 4
M1 - e12338
ER -