The concept of multiple droplet impacts resulting from ultra high-pressure waterjet (UHPWJ) was used to develop a mathematical model to describe the effect of interfacial pressure on the underlying workpiece material. A non-linear elastic-plastic finite element analysis (FEA) was carried out in this study using the interfacial pressure model to predict residual compressive stresses. This three-dimensional FEA model was based on quasi-static considerations to provide prediction of both magnitude and depth of residual stress fields in a 7075-T6 aluminum alloy (A17075-T6). Results of the FEA modeling were in good agreement with experimental measurements. Effects of applied pressures on the residual stress fields are also presented and discussed as a method of estimating high-pressure waterjet induced compressive stresses under varying process conditions for peening.
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August 2004
Technical Papers
Residual Stress Induced by Waterjet Peening: A Finite Element Analysis
S. Kunaporn,
S. Kunaporn
University of Washington, Seattle, WA 98195
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M. Ramulu, ASME Fellow,
M. Ramulu, ASME Fellow
University of Washington, Seattle, WA 98195
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M. G. Jenkins,
M. G. Jenkins
University of Detroit Mercy, Detroit, MI 48221
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M. Hashish, ASME Fellow
M. Hashish, ASME Fellow
Flow International, Kent, WA
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S. Kunaporn
University of Washington, Seattle, WA 98195
M. Ramulu, ASME Fellow
University of Washington, Seattle, WA 98195
M. G. Jenkins
University of Detroit Mercy, Detroit, MI 48221
M. Hashish, ASME Fellow
Flow International, Kent, WA
Contributed by the Pressure Vessels and Piping Division for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received by the PVP Division August 5, 2003; revision received November 1, 2003. Editor: S. Y. Zamrik.
J. Pressure Vessel Technol. Aug 2004, 126(3): 333-340 (8 pages)
Published Online: August 18, 2004
Article history
Received:
August 5, 2003
Revised:
November 1, 2003
Online:
August 18, 2004
Citation
Kunaporn , S., Ramulu, M., Jenkins, M. G., and Hashish, M. (August 18, 2004). "Residual Stress Induced by Waterjet Peening: A Finite Element Analysis ." ASME. J. Pressure Vessel Technol. August 2004; 126(3): 333–340. https://doi.org/10.1115/1.1767175
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