Influence of Up-down-up Constitutive Equation Parameters on Yield Plateau Stage of Mild Steel Samples Subjected to Stretching.

Chirkov, Artyom O.; Eremin, Mikhail O.

In this work, the computational study of Lüders phenomenon is addressed. The material for investigation is low-carbon steel demonstrating the yield point phenomenon when pulled in tension. Modeling of samples loading is carried out in the framework of three-dimensional finite-difference method. Judging by the literature review, there is a lack of papers thoroughly addressing the curves of dependences of Lüders elongation and front propagation velocity on parameters of up-down-up constitutive equation. This work fills this gap. It is shown that the difference between the true upper and lower yield stresses, and strain hardening factor have a strong impact on the duration of the yield plateau stage and ratio of front propagation velocity vf to loading velocity vl. The results of computational study complement the experimental data presented in available literature.

MILD steel; STRETCHING of materials; FINITE differences; STRAIN hardening; LUDERS bands

Journal of Applied & Computational Mechanics, 2022, Vol 8, Issue 4, p1315

2383-4536

Academic Journal

10.22055/jacm.2022.39944.3492