Finite element modelling of burnishing process

FEM burnishing simulation including roughness

“…The maximum depth at which the compressive residual stresses are presented at 0.7 mm. In prior works about of the ball burnishing process found that the compressive residual stresses are a range between 0.4 to 2 mm [1,3,6,6,26,27]. At the depth of 0.54 mm for both experimental residual stresses curves, it can be observed an atypical value of residual stress, probably this value is due to an imperfection of the workpiece in that point.…”

“…At the depth of 0.54 mm for both experimental residual stresses curves, it can be observed an atypical value of residual stress, probably this value is due to an imperfection of the workpiece in that point. Reference Improvement in the surface quality (%) [1] 83 (Ra) and 77 (Rt) [3] 90 [5] 70 [6] 91 [26] 75 (Ra) and 59 (Rt) [29] 70 [30] 84 Final roughness (R a ) obtained after burnishing simulation was 0.95. To obtain this value, from the develop model was gotten the radial displacement of nodes on the area where was applied the initial roughness, using equation (2).…”

“…Ball burnishing process improves the surface quality [1][2][3][4][5], increases the surface hardness of the workpiece [3][4][5][6], which in turn improves wear [7] and corrosion [8] resistances and inducing residual compressive stresses that improve the fatigue strength [6,9]. Ball burnishing is a cold working process, which takes place on the surface of pre-machined workpieces.…”

“…In the past, most studies concerning to the ball burnishing process were focused on experimental tests [2][3][4][5][11][12][13][14][15], determining specific parameters such as the roughness before and after the burnishing process. In recent years, some researchers developed 2D and 3D models using the Finite Element Method (FEM) [1,3,6,[16][17][18][19] to predict, study and analyze the influence of parameters of the burnishing ball process, allowing to reduce the high costs of experimental tests. The study of models has been focused on the prediction of compressive residual stress and the prediction of roughness simulating the burnishing process has been little studied.…”

A felületvasalási eljárás vizsgálata végeselemes módszerrel

“…Vizsgálatunk célja a vasalási folyamat során alkalmazott megmunkálási paraméterek felületi minőségre gyakorolt hatásának modellezése. Már a múltban is sok kutató nagy hangsúlyt fektetett a technológia elméleti tanulmányozására [7][8][9][10][11] és továbbra is fennáll az igény egy megbízható végeselemes modell megalkotására, mely biztosítaná az eljárás okozta anyagban lejátszódó folyamatok alapvető megértését.…”