On the Effect of Through-Thickness Integration for the Blank Thickness and Ear Formation in Cup Drawing FE Analysis


European Mechanical Science, vol.5, no.2, pp.51-55, 2021 (Peer-Reviewed Journal) identifier

  • Publication Type: Article / Article
  • Volume: 5 Issue: 2
  • Publication Date: 2021
  • Doi Number: 10.26701/ems.781175
  • Journal Name: European Mechanical Science
  • Journal Indexes: TR DİZİN (ULAKBİM)
  • Page Numbers: pp.51-55
  • Yıldız Technical University Affiliated: Yes


Various numerical parameters such as element size, mesh topology, element formulations effect the predictionaccuracy of sheet metal forming simulations and wrong selection of these parameters can lead to inaccuratepredictions. Therefore, selection of proper numerical parameters is crucial for obtaining of realistic results fromfinite element (FE) analyses. In the present work, influence of the number of through-thickness integrationpoints from the numerical parameters was investigated on the cup drawing simulation. Highly anisotropicAA 2090-T3 aluminum alloy was selected as test material and the anisotropic behavior of the material wasdefined with Barlat 91 yield criterion. Firstly, cup drawing model was created with implicit code Marc and thenFE analyses were performed with five, seven and nine layers to investigate the effect of number of throughthickness integration points. The computed earing profiles and thickness strain distributions were comparedwith measurements. Comparisons showed that the angular locations of maximum cup heights and thicknessstrain distributions along rolling and transverse directions were captured accurately by Yld91 yield criterion andalso it was observed that the layer number effects the maximum cup height and thickness strain distributionalong the rolling direction.