Numerical analysis of tensile-shear performance in welded plate structures

Cherfi Mohamed , Abdelmadjid Moulgada , Mohammed E.S. Zagane , Murat Yaylaci , Djafar Ait Kaci , Abderahmane Sahli , I.M.A Ghermaoui , Merve Terzi , Şevval Öztürk , Ecren Uzun Yaylaci

Abstract

The automotive industry extensively uses advanced high-strength steels for structural applications, raising challenges related to the mechanical performance of resistance spot-welded joints. This study numerically investigates the tensile–shear behavior of spot-welded steel plates made of TRIP800, DP450, and DP980 using a three-dimensional finite element approach. The objective is to evaluate the influence of material type and applied load on stress distribution, mechanical response, and safety factors. The results show significant stress concentration near the weld nugget, with a symmetrical distribution in the transverse direction and an asymmetrical pattern along the loading direction. DP450 and TRIP800 exhibit earlier loss of elastic behavior compared to DP980, although all materials maintain adequate safety margins at maximum load levels. These findings underscore the significance of material selection in ensuring the structural integrity of spot-welded automotive components.

Key Words

dual phase; finite element method; spot resistance; spot welding; transformation induced plasticity (TRIP)

Address

Cherfi Mohamed, Abderahmane Sahli, I.M.A Ghermaoui — LMPM, Djillali Liabes University of Sidi Bel-Abbes, Algeria
Abdelmadjid Moulgada, Mohammed E.S. Zagane — LMPM, Djillali Liabes University of Sidi Bel-Abbes, Algeria/ Ibn Khladoun, University of Tiaret, Algeria
Murat Yaylaci — Department of Civil Engineering, Recep Tayyip Erdogan University, 53100, Rize, Türkiye/ Turgut Kiran Maritime Faculty, Recep Tayyip Erdogan University,53900, Rize, Türkiye/ Dijitalpark Teknokent, Murat Yaylaci-Luzeri R&D Engineering Company, 53100, Rize, Türkiye
Djafar Ait Kaci — Ibn Khladoun, University of Tiaret, Algeria
Merve Terzi,Şevval Öztürk — Department of Civil Engineering, Recep Tayyip Erdogan University, 53100, Rize, Türkiye
Ecren Uzun Yaylaci — Faculty of Fisheries, Recep Tayyip Erdogan University, 53100, Rize, Türkiye

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