PT  - JOURNAL ARTICLE
AU  - Mohamed, Cherfi
AU  - kaci Djafar, Ait
AU  - Abdelmajid, Moulgada
AU  - abderahmane, Sahli
AU  - Amine, Ghermaoui Ilias Mohammed
TI  - Numerical Study of Tensile-shear Fracture Behaviour of Resistance Spot Welded Sheet Steel with DP 450 and DP 980
DP  - 2024 Dec 1
TA  - Acta Mechanica Slovaca
PG  - 14--24
VI  - 28
IP  - 4
AID - 10.21496/ams.2024.018
IS  - 13352393
AB  - The use of resistance electric welding to assemble metal plates is of crucial importance in various industrial sectors. Studying the fracture behavior of resistance-welded components, especially alloys DP450 and DP980, is crucial to ensure the reliability and durability of welded structures in demanding industrial applications. When components are subjected to mechanical loads, the resulting stresses can exceed tolerable limits, leading to the initiation of damage and, ultimately, fracture. A comprehensive investigation into the fracture behavior of resistance-welded components using DP 450 and DP 980 alloys will provide a better understanding of the fracture mechanisms associated with these alloys. This will offer valuable insights for optimizing welding parameters, selecting materials, and designing components to minimize the risks of premature fracture. In this study, we will focus on the implications of the crack detected at the base metal level, as it is identified as the initial damaged material in the BM-HAZ-MM sequence. This crack, with a predefined size (10mm), will be subjected to continuous loading to analyze the evolution of the J parameter. The objective of this study is to track the crack's progression and assess its impact on material performance. By monitoring the J parameter during continuous loading, we will quantify crack advancement and gain crucial information about its propagation. This will enable us to implement preventive measures and design suitable solutions to enhance the base metal's strength. This chapter marks a significant milestone in our study, as it will provide deeper insights into the failures of the base material.