Calculation of residual stresses resulting from bending of cold formed steel bars

Abstract

In this study, the residual stresses in the forming of the seed capsule which used in manifacturing the ferforje was carried out. These residual stresses were made up in the process which bars with 8 mm diameter were converted to 6 x 6 mm(2) square profiles. This process was actually a Rolling process performed at three levels. Plastic constant and strain hardening parameter were calculated at each level. Then, elasto-plastic stress analysis of the bar subjected to bending was analzed by means of Newton Cotes formulation. The load value that cause residual stresses on the steel bar was assumed to be constant in elasto-plastic analysis. Elastic, plastic and residual stresses under the load value were determined in each level and results were presented in the graphical format.

C1 [Atlihan, Gokmen; Topcu, Muzaffer; Callioglu, Hasan; Altan, Gurkan] Pamukkale Univ, Muhendislik Fak, Makine Muhendisligi Bolumu, Kampus Denizli, Turkey.