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The prediction of spring‐back and residual stress in coiled strip
Author(s) -
SWIFT W. A. C.
Publication year - 1976
Publication title -
strain
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.477
H-Index - 47
eISSN - 1475-1305
pISSN - 0039-2103
DOI - 10.1111/j.1475-1305.1976.tb00182.x
Subject(s) - residual stress , bending , tension (geology) , materials science , spring (device) , stress (linguistics) , structural engineering , composite material , ultimate tensile strength , modulus , yield (engineering) , engineering , linguistics , philosophy
Cold‐rolled, heat‐treated strip has tensile and compressive stress‐strain characteristics which approximate to those of an ideal elastic‐perfectly plastic material. The paper describes the use of Gardiner's 1 equation for spring‐back following pure bending and its application to a rapid method of determining the ratio of the Young's modulus to the yield stress of the material. If, as is often the case, tension is applied to the strip during coiling, the spring‐back equations of Woo and Marshall 2 are applied. Woo and Marshall's equations for residual stress are used in non‐dimensional form for both pure bending and bending under tension.