Browse Publications Technical Papers 2009-01-1390
2009-04-20

Results of Auto/Steel Partnership (A/SP) Steel Tube Hydroforming Materials and Lubricants Experimental Projects 2009-01-1390

Over the past twelve years the Auto/Steel Partnership (A/SP) Tube Hydroforming Materials and Lubricants Team has been conducting projects to aid the implementation of tubular hydroforming in automotive applications. The approach taken has been to initially gain a basic understanding of the hydroforming process and potential issues and to then extend learning to real world applications of increasing complexity.
The experimental project investigations have encompassed various steel grades with a recent focus on advanced high strength steel (AHSS) and tailor welded tubes (TWTs) in free expansion and corner fill processes using several types of lubricants.
Project plans are developed based on identified knowledge gaps, barriers to implementation and technology needs as follows:
  • Effects of forming operations prior to hydroforming including tube making, pre-bending and pre-forming.
  • Forming limits (e.g. forming limit diagrams (FLDs)) and other failure criterion.
  • Experience with AHSS in hydroforming applications is limited.
  • Attitude is conservative toward new materials and envelope-pushing applications.
  • Need to demonstrate the benefits of tube hydroforming through projects focused on real world applications
  • Limited computer modeling knowledge and lack of validated tools for automotive design process.
This paper will review a few of the projects that have been conducted by the A/SP Hydroforming Materials and Lubricants Team as well as present results and major findings of these projects. The entire database of experimental results and learning is available for use by other researchers to support implementation of steel tube hydroform automotive solutions and for validation of computer models through A/SP (www.a-sp.org).

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Preview Document Add to Cart
Members save up to 16% off list price.
Login to see discount.
We also recommend:
TECHNICAL PAPER

Metal Forming Characterization and Simulation of Advanced High Strength Steels

2004-01-1048

View Details

TECHNICAL PAPER

Operant Friction Coefficient of Prephosphated Galvanneal under Punch Stretching

1999-01-0024

View Details

TECHNICAL PAPER

Effect of End-feed in Hydroforming of Straight and Pre-bent High Strength and Advanced High Strength Steel Tubes

2006-01-0544

View Details

X