Effects of Damage Evolution on Edge Crack Sensitivity in Dual‐Phase Steels
Year: 2024
Type: article
Abstract: The present study aims to thoroughly investigate the edge‐cracking phenomenon in high‐strength sheets. Hence, the edge crack sensitivity of three dual‐phase steels is studied in various combinations of edge manufacturing and forming processes. Finite element simulations are performed to elaborate the study. In this regard, the Yoshida–Uemori kinematic hardening model is employed to describe the plasticity behavior of the materials under multistep processes. A stress‐state fracture model is coupled with this plasticity model to illustrate the distinguished local fracture strains of each material. Moreover, the effects of strain rate and the consequent temperature rise on hardening and damage are taken into account, which play significant roles during shear‐cutting. The results show that although the shear‐cutting processes are applied at very low speed, the strain rate and induced temperature are still high at the cutting area. The hole expansion results show different fracture behaviors for different cases. In brief, cracking is initiated at a location, which shows the highest damage accumulation during edge manufacturing plus the subsequent forming process. Such a complicated situation can only be successfully predicted by using a computer‐aided approach along with proper material modeling, like the applied model in this study.
Source: steel research international
Authors: Niloufar Habibi, Thorsten Beier, Junhe Lian, Berk Tekkaya, Markus Koenemann, Sebastian Muenstermann
Institutions: RWTH Aachen University, ThyssenKrupp (Germany), Aalto University
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,500
OpenAlex ID: W4401515185