2026-04-21T04:31:01Zhttps://ebiltegia.mondragon.edu/oai/request

oai:ebiltegia.mondragon.edu:20.500.11984/54772024-03-05T11:40:58Zcom_20.500.11984_473col_20.500.11984_478

Substitutive Press-Bolster and Press-Ram Models for the Virtual Estimation of Stamping-Tool Cambering Abbasi, Farshad Trinidad Naranjo, Javier Otegi, Nagore Sáenz de Argandoña, Eneko GALDOS, Lander Sarasua Rivera, Alex tool cambering press-deflection-measuring system substitute model sheet-metal forming (SMF) try-out and production Today’s stamping simulations are realized by ignoring the elastic deformation of the press and tooling system through the assumption of a rigid behavior and a perfect press stroke. However, in reality, the press and tool components deform elastically and are one of the major error sources for the final adjustment and blue-spotting of the dies. In order to tackle this issue, a new approach is proposed in this study that substitutes the press stiffness by means of a substitutive model composed of cost-effective shell and beam elements. The substitute model was calibrated using full-scale measurements, in which a 20,000 kN trial press was experimentally characterized by measuring its deformation under static loads. To examine the robustness of the substitute model, a medium-size tool and a large-size tool were simulated together with the substitutive model. To this end, a B-pillar tool was re-machined based on the substitute-model results and a new cambering procedure was proposed and validated throughout the blue-painting procedure. The newly developed substitute model was able to replicate the global stiffness of the press with a high accuracy and affordable calculation time. The implementation of the findings can aid toolmakers in eliminating most of the reworking and home-line trials. 2022-03-03T13:14:13Z 2022-03-03T13:14:13Z 2021 http://purl.org/coar/resource_type/c_6501 1996-1944 https://katalogoa.mondragon.edu/janium-bin/janium_login_opac.pl?find&ficha_no=167119 https://hdl.handle.net/20.500.11984/5477 eng Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ © 2021 by the authors. Licensee MDPI MDPI