On wrinkling instability of automotive panels
- Aluminum Company of America, Alcoa Center, PA (United States)
Tearing and wrinkling are the two major modes of instability in sheet metal forming operations. Tearing, which has received considerable amount of attention, is caused by excessive tensile stresses leading to fracture of the sheet. Wrinkling or buckling is caused by excessive compressive stresses during forming. This mode of instability is becoming more prevalent in recent years with the use of thinner high strength steel sheets and the increase application of aluminum sheet alloys in the automotive industry. Wrinkling often appears as surface defects in the form of small waves or folds. Therefore, an understanding of the factors governing the formation and growth of wrinkles is of prime importance in the successful forming of automotive panels. To provide a better understanding of the nature of instability, actual industrial problems as well as laboratory-based types of examples will be discussed in the presentation. The intent of this presentation is to provide other researches with an insight into issues surrounding wrinkling of automotive panels and to excite new research interests in this area.
- OSTI ID:
- 175228
- Report Number(s):
- CONF-950686-; TRN: 95:006111-0169
- Resource Relation:
- Conference: Joint applied mechanics and materials summer meeting, Los Angeles, CA (United States), 28-30 Jun 1995; Other Information: PBD: 1995; Related Information: Is Part Of AMD - MD `95: Summer conference; PB: 520 p.
- Country of Publication:
- United States
- Language:
- English
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