Experimental investigation of springback variation in forming of high strength steels

Chen Peng, Muammer Koç, Michael L. Wenner

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The use of high strength steels (HSSs) in automotive body structures is a prominent method of reducing vehicle weight as an alternative to use of aluminum and magnesium alloys. However, parts made of HSSs demonstrate more springback than parts made of mild steels do. Moreover, variations in the incoming material, friction, and other process conditions cause variations in the springback characteristics, which prevent the practical applicability of the springback prediction and compensation techniques. Consequently, it leads to amplified variations and quality issues during assembly of the stamped components. The objective of this study is to investigate and gain an understanding of the variation of springback in the forming of HSSs. Two sets of experiments were conducted to analyze the influence of the material property (dual-phase steels from different suppliers), lubrication, and blank holder pressure on the springback variation. The experimental results showed that the variation in the incoming blank material is the most important factor. In summary, the thicker the blank is, the less the springback variation. On the other hand, blanks without a coating show less springback variation. The application of lubricant helps us to reduce springback variation, although it actually increases the springback itself. The more uniform the friction condition, the less the springback variation. The influence of blank holder pressure on the springback variation is not distinguishable from the system-level noise in our experiment.

Original languageEnglish
Pages (from-to)410061-410069
Number of pages9
JournalJournal of Manufacturing Science and Engineering, Transactions of the ASME
Volume130
Issue number4
DOIs
Publication statusPublished - Aug 2008
Externally publishedYes

Fingerprint

High strength steel
Friction materials
Magnesium alloys
Lubrication
Carbon steel
Lubricants
Aluminum alloys
Materials properties
Experiments
Friction
Coatings
Steel

Keywords

  • High strength steels
  • HSS
  • Noncontact measurement
  • Springback variation
  • Variation analysis

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Mechanical Engineering
  • Computer Science Applications
  • Industrial and Manufacturing Engineering

Cite this

Experimental investigation of springback variation in forming of high strength steels. / Peng, Chen; Koç, Muammer; Wenner, Michael L.

In: Journal of Manufacturing Science and Engineering, Transactions of the ASME, Vol. 130, No. 4, 08.2008, p. 410061-410069.

Research output: Contribution to journalArticle

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