25-27 April 2022
Conventum Conference Center
Europe/Vienna timezone

Virtual tryout assessment for the evaluation of precision of dimensional prediction of stamping parts

25 Apr 2022, 17:00
20m
Room 2

Room 2

Oral Presentation Simulations & modelling Simulation & Modelling

Speaker

Fernando Carneiro (Department of Mechanical Engineering, Instituto Tecnológico de Aeronáutica (ITA))

Description

Multiple cycles of tool dimensional correction during tryout process are one of the most critical aspects in manufacturing of stamping tools, causing significant impact to its production cost. An alternative to reduce tryout time and cost is to perform the dimensional corrections in a virtual model, so that ideally, all the corrections can be done to the simulation before the test of the physical tool is performed. This process is termed virtual tryout. In order to enable the testing of the tool be performed solely through simulation, the digital model must be capable of accurately representing the physics involved in the sheet metal forming process. An accurate model can ensure that the dimensional divergences between the results from the simulation and those measured in the formed specimen are as minimal as the tolerance established by the end client. Deep understanding of the physical phenomena and their variables are crucial to guarantee that the parameters that most significantly affect the results are considered during the construction of the model. In this paper the dimensional correlation between the geometry of u-drawn steel specimens and those from the simulation is studied. The sheet metal forming simulations are performed using software Pam-Stamp. Different material and plasticity models are analyzed and their impact to the final dimensional results are compared to those measured from the steel specimen, in order to find the main sources of error that cause discrepancies between the results of stamping simulations and tryout.

Speaker Country Brazil

Primary author

Fernando Carneiro (Department of Mechanical Engineering, Instituto Tecnológico de Aeronáutica (ITA))

Co-authors

Dr André de Lima (Department of Mechanical Engineering, Instituto Tecnológico de Aeronáutica (ITA)) Prof. Alfredo de Faria (Department of Mechanical Engineering, Instituto Tecnológico de Aeronáutica (ITA))

Presentation Materials

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