Analysis of anisotropic hardening in high strength steel (HSS) in line pipes for strain-based applications

Abstract

In this paper are reported the results of an extensive and innovative mechanical characterization carried out on three large diameter line pipes for gas transportation useful to calibrate a new plasticity finite element numerical simulation (FEM) model developed at Rina Consulting – Centro Sviluppo Materiali. In particular, the anisotropic hardening for the materials has been characterized by tensile tests carried out in the base material of the pipe with tensile specimen extracted along different orientations, considering also the pipe through thickness direction.

Keywords

• HSS
• pipe
• anisotropy
• mechanical properties
• large strain