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Press-formingMaterial edgeStretch flangeBurringPress fractureHigh strength steelCAEFEMForming allowanceFracture countermeasuresDevelopment periodPart design

Data Science

Stretch Flange Fracture Evaluation/Prediction System for Material Edge during Press-Forming

Enables highly accurate judgment of stretch flange fracture at the material edge, which was impossible with the conventional technique.

Solution Point

  • Establishment of a stretch flange fracture evaluation method for the material edge during press-forming.
  • Shortening of the part development period by prediction of fracture.
  • Enables use of high strength steel (HSS) sheets in pressed parts by material selection that reduces fracture risk.
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Features 01

Expected Problems
Don't you have any problems in evaluation/prediction of stretch flange fracture in press-forming?

Features 02

Technology highlight
?In stretch flange fracture (Fig. 1) during press-forming, high-accuracy judgment of fracture is possible by introducing a stretch-flange deformation curve (Fig. 2) that considers not only the strain of the material edge, but also strain gradient of the edge.
?Enables selection of material that reduces fracture risk by using a stretch flange fracture prediction method by comparing the flange deformation limit curve and CAE analysis results (Fig. 3).
図

Features 03

Proposed Solutions (Examples)
Fracture prediction at material edge during press-forming
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