The Hockett-Sherby equation is proposed as an optimal stress-strain model in a non-uniform deformation region. After necking, a true stress-strain equation is determined by iteratively conducting finite element analysis using three pieces of information at the necking and the fracture points.
/maslow-s-hierarchy-of-needs--scalable-vector-illustration-655400474-5c6a47f246e0fb000165cb0a.jpg "engineering stress vs true stress pdf")
Before necking, the true stress and strain values are directly converted from engineering stress and strain data, respectively. This study presents a simple methodology to determine the true stress-strain curve of type 304 and 316 austenitic stainless steels in the full range of strain from a typical tensile test.
Knowing a material’s true stress-strain curve is essential for performing a nonlinear finite element analysis to solve an elastoplastic problem.
0 kommentar(er)
