Investigation of Forming Performance of Laminated Steel Sheets Using Finite Element Analyses

Conference · Wed Jun 20 04:00:00 EDT 2007

DOI:https://doi.org/10.1063/1.2740924· OSTI ID:914682

Liu, Wenning; Sun, Xin; Ruokolainen, Robert; Gayden, X

Laminated steel sheets have been used in automotive structures for reducing in-cabin noise. However, due to the marked difference in material properties of the different laminated layers, integrating laminated steel parts into the manufacturing processes can be challenging. Especially, the behavior of laminated sheets during forming processes is very different from that of monolithic steel sheets. During the deep-draw forming process, large shear deformation and corresponding high interfacial stress may initiate and propagate interfacial cracks between the core polymer and the metal skin, hence degrading the performance of the laminated sheets. In this paper, the formability of the laminated steel sheets is investigated by means of numerical analysis. The goal of this work is to gain insight into the relationship between the individual properties of the laminated sheet layers and the corresponding formability of the laminated sheet as a whole, eventually leading to reliable design and successful forming process development of such materials. Finite element analyses of laminate sheet forming are presented. Effects of polymer core thickness and viscoelastic properties of the polymer core, as well as punching velocity, are also investigated.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 914682
• Report Number(s): PNWD-SA-7770
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DEFORMATION
DESIGN
MANUFACTURING
NUMERICAL ANALYSIS
PERFORMANCE
POLYMERS
SHEAR
STEELS
THICKNESS
VELOCITY