To improve the computational prediction of the springback for - - PowerPoint PPT Presentation

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to improve the computational prediction of the springback
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To improve the computational prediction of the springback for - - PowerPoint PPT Presentation

Mar 30, 2024 744 likes •953 views

Ministrio da Educao Universidade Federal do Paran Setor de Tecnologia Programa de Ps-Graduao em Engenharia Mecnica (PGMec) Workgroup Leader Prof. Dr. Paulo Victor Prestes Marcondes marcondes@ufpr.br Goal: To

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Goal: through the implementation during modeling

  • f factors that take into account the

mechanical material properties variation during forming.

To improve the computational prediction of the springback for Advanced High Strength Steel - AHSS.

Ministério da Educação Universidade Federal do Paraná Setor de Tecnologia Programa de Pós-Graduação em Engenharia Mecânica (PGMec)

  • Workgroup Leader
  • Prof. Dr. Paulo Victor Prestes Marcondes
  • marcondes@ufpr.br
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Springback according to the material grade

(WorldAutoSteel, 2014)

THE MEHANICAL PROPERTIES INFLUENCE ON PREDICTION OF SPRINGBACK FOR AHSS

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Automotive steels can be classified in several different ways. Here is a schematic of different grades, its properties and forming characteristics.

Total elongation (%) Tensão de escoamento (MPa) (World Auto Steel, 2014) Tensile Strenght (MPa)

Lightweigthing: What´s a next?

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INFLUENCE OF TEMPERATURE IN DEEP DRAWING

Workgroup Leader

  • Prof. Dr. Paulo Victor Prestes Marcondes

Manufacturing Technology Forming

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Temperature can minimize springback but

it will affect the FLC.

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THE INFLUENCE OF ELASTIC MODULUS VARIATION EFFECT ON PREDICTION OF SPRINGBACK FOR AHSS Workgroup Leader

  • Prof. Dr. Paulo Victor Prestes Marcondes

Manufacturing Technology Forming

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Industrial challenge

Improved springback prediction

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Study of material elastic behavior for better characterization in the simulation software

Unloading-loading cycles obtained from the uniaxial tensile tests: (a) DP600-A ​, (b) detail showing the behavior of the unloading elastic modulus and (c) measured elastic modulus at various strains.

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THE INFLUENCE OF BAUSCHINGER EFFECT ON PREDICTION OF SPRINGBACK FOR AHSS

Workgroup Leader

  • Prof. Dr. Paulo Victor Prestes Marcondes

Manufacturing Technology Forming

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THE INFLUENCE OF BAUSCHINGER EFFECT ON PREDICTION OF SPRINGBACK FOR AHSS

  • Determining a new method for obtaining the

Bauschinger effect curves for AHSS.

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FORMING ANALYSES TO DIFFERENT BLANKHOLDER FORCES Workgroup Leader

  • Prof. Dr. Paulo Victor Prestes Marcondes

Manufacturing Technology Forming

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FORMING ANALYSES OF AHSS TO DIFFERENT BLANKHOLDER FORCES

To evaluate the influence of blankholder force in the formability of "Dual Phase" DP600 steel.

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EXPERIMENTAL AND NUMERICAL ANALYSIS ON STRAIN DEVELOPMENT DURING HOLE EXPANSION OF AHSS Workgroup Leader

  • Prof. Dr. Paulo Victor Prestes Marcondes

Manufacturing Technology Forming

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 Characterize material mechanical properties, sheet formability and crack propagation for AHSS.

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THE UNION OF SHEET METAL BY CLINCHING

Workgroup Leader

  • Prof. Dr. Paulo Victor Prestes Marcondes

Manufacturing Technology Forming

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Industrial challenge

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Incremental Sheet Forming

Workgroup Leader

  • Prof. Dr. Paulo Victor Prestes Marcondes

Manufacturing Technology Forming

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  • Formability better than Deep Drawing
  • Small Batch
  • No Die Required
  • Reduced Time and Cost
  • Customized Products
  • CNC Machines (CAD/CAM)
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Incremental Forming

Force FLC’s Simulation Punch Wear Stretching capabilities Deep Drawing capabilities

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  • Prof. Dr. Paulo Victor Prestes Marcondes
  • Workgroup Leader
  • marcondes@ufpr.br
  • 55 (41) 3361-3431

THANK YOU

For further informations feel free to ask for scientific papers related to the subjects