To main content

A Contact and Friction Model for Forming of Galvanized Steel Sheet Based on Fractal Theory

Abstract

Galvanized steel sheets are increasingly used in the automotive industry due to excellent corrosion resistance, sufficient weldability, and formability. During sheet forming of galvanized metals, material failures such as exfoliation and cracking can be found in the zinc coated layers of the sheet under severe friction. Thus, the evaluation of the influences of surface topography, pressure, and lubrication on friction could provide valuable guidance in forming of galvanized metals. A hot-dip galvannealed sheet and a hot-dip galvanized sheet are chosen in this tribology study. The surface topographies of the materials are measured using profile meter and the fractal parameters are calculated using the fractal theory. The contact model between the sheet and the die is established using the real contact area. The friction model concerning the surface topography of galvanized sheet and the pressure is thus formulated. The friction coefficients of the theoretical values are in reasonable agreement with the experimental.

Category

Academic chapter

Language

English

Author(s)

  • Yao Huang
  • Leigang Wang
  • Mingxiao Shi
  • Xiang Ma

Affiliation

  • SINTEF Industry / Metal Production and Processing
  • Jiangsu University

Year

2021

Publisher

Springer

Book

Forming the Future - Proceedings of the 13th International Conference on the Technology of Plasticity

ISBN

9783030753818

Page(s)

97 - 112

View this publication at Norwegian Research Information Repository