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http://dx.doi.org/10.17958/ksmt.20.6.201812.844

Prediction of Velocity of Shot Ball with Blade Shapes based on Discrete Element Analysis  

Kim, Tae-Hyung (Cheongju University)
Lee, Seung-Ho (Gyeonggi College of Science & Technology)
Jung, Chan-Gi (Daewon Applied Eng. Co.)
Publication Information
Journal of the Korean Society of Mechanical Technology / v.20, no.6, 2018 , pp. 844-851 More about this Journal
Abstract
In this study, the regression equation was suggested to predict of the shot ball velocity according to blade shapes based on discrete element (DE) analysis. First, the flat type blade DE model was used in the analysis, the validity of the DE model was verified by giving that the velocity of the shot ball almost equal to the theoretical one. Next, the DE analyses for curved and combined blade models was accomplished, and their analytical velocities of shot ball were compared with the theoretical one. The velocity of combined blade model was greatest. From this, the regression equation for velocity of shot ball according to the blade shape based on the DE analysis was derived. Additionally, the wind speed measurement experiment was carried out, and the experimental result and analytical one were the same. Ultimately, it was confirmed that the prediction method of the velocity of shot ball based on DE analysis was effective.
Keywords
Discrete Element Analysis; Shot Peening; Blade; Impeller; Residual Stress;
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