Ductility of G550 Sheet Steels in Tension-Elongation Measurements and PerforatedTests.

摘要

The American Iron and Steel Institute (AISI) Design Specification further limitsthe use of thin, high strength steels to roofing, siding and floor decking panels. Sheet steels are required to have a minimum elongation capability to ensure that members and connections can undergo small displacements without a loss in structural performance and to reduce the harmful effects of stress concentrations. The ductility criterion specified in the Australian/New Zealand and North American Design Standards is based on an investigation of sheet steels by Dhalla and Winter, which did not include the high strength G550 sheet steels currently used in construction. This report details the findings of the first phase of a research project into the tensile behavior of G550 sheet steels which range in base metal thickness from 0.40 to 0.60mm.