Residual stresses in cold-rolled profiles

✍ Scribed by Jacques Rondal

• Publisher: Elsevier Science
• Year: 1987
• Tongue: English
• Weight: 793 KB
• Volume: 1
• Category: Article
• ISSN: 0950-0618
• DOI: 10.1016/0950-0618(87)90016-x

✦ Synopsis

Structural steel members obtained by cold.forming have become more and more popular in steel constructiort They allow for lightening the weight and thus provide appreciable savings over conventional hot.rolled sections.

Cold. forming leads to changes in the main structural characteristics of the virgin materiaL Among them the increase of the yield strength due to strain.hardening and of the ultimate strength due to strain.ageing and the birth of residual stresses which play an important role in the behaviour of the profiles under compression loads.

The aim of the paper is to propose a theoretical method for predicting residual stresses due to cold.rolling. The numerical results obtained lead to a better knowledge of the characteristics of the cold.rolling (elastic spring.back, effect of the ratio of the thickness versus the radius of the comer, distribution and size of the residual stresses with respect to the dimensions of the profiles).