Wrinkling Analysis in Shrink Flanging
Author:
Wang Xi1, Cao Jian1, Li Ming2
Affiliation:
1. Department of Mechanical Engineering, Northwestern University, Evanston, IL 60208 2. Alcoa Technical Center, Alcoa Center, PA 15069
Abstract
Flanging is a commonly used sheet forming operation to increase the stiffness of a sheet panel and/or to create the mating surface for subsequent assemblies. This paper presents an energy approach to predict the onset of wrinkling during a shrink flanging operation. A curved sheet model is established to obtain the critical buckling stress in terms of stress state, geometry properties and material properties. The predictions of wave number agree well with the experimental results. The results indicate that the sensitivity of wave number on the plan view radius (PVR) increases as PVR decreases, and the wave number decreases with the increase of flange length. The critical flange length is significantly influenced by PVR, sheet thickness and material work-hardening, and is not sensitive to material strength and anisotropy.
Publisher
ASME International
Subject
Industrial and Manufacturing Engineering,Computer Science Applications,Mechanical Engineering,Control and Systems Engineering
Reference19 articles.
1. Wang, C. T., Kinzel, G., and Altan, T., 1994, “Wrinkling Criterion for an Anisotropic Shell with Compound Curvatures in Sheet Forming,” Int. J. Mech. Sci., 36, pp. 945–960. 2. Hutchinson, J. W., and Neale, K. W., 1985, “Wrinkling of Curved Thin Sheet Metal,” Plastic Instability, Presses Ponts et Chausse´es, Paris, pp. 71–78. 3. Neale, K. W., and Tugˇcu, P., 1990, “A Numerical Analysis of Wrinkle Formation Tendencies in Sheet Metals,” Int. J. Numer. Methods Eng., 30, pp. 1595–1608. 4. Chu, E. W., and Li, M., 1996, “The Onset and Growth of Elastic-Plastic Wrinkling of Aluminum Alloy Sheets,” NumiSheet’96, pp. 228–239. 5. Tvergaard, V.
, 1999, “Studies of Elastic-Plastic Instabilities,” ASME J. Appl. Mech., 66, No. 1, pp. 3–9.
Cited by
28 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献
|
|