Springback as a Function of Strength and Thickness Variability in High Strength Sheet Steels U.S. Steel Research

Format:

Book

Conference/Event

Author/Creator:

Hance, Brandon M., author.

Conference Name:

International Body Engineering Conference & Exposition (2000-10-03 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2000

Summary:

Springback in sheet metal forming is becoming a very troublesome issue with the increased use of high strength steels in automobiles. The current trend for many applications is to reduce vehicle weight by down-gaging, that is, substituting higher strength, thinner steels for lower strength, thicker steels. The primary springback concern in sheet metal forming is variation in springback, rather than the magnitude of the springback. Even large springback can be accommodated if it can be consistently predicted. Variations in springback are caused by variations in mechanical properties and gage, and by fluctuations in the conditions of the forming process. This paper addresses the expected springback issues associated with the application of high strength sheet steels in light of strength and thickness uniformity. A simple expression is used to show how variations in yield strength and gage may be expected to influence springback in sheet metal forming. Also, the implications of down-gaging are discussed in the context of mechanical property and thickness variability data tabulated for actual production materials

Notes:

Vendor supplied data

Publisher Number:

2000-01-2658

Access Restriction:

Restricted for use by site license