Finite Element Analysis on Block Shear Mechanism of Lean Duplex Stainless Steel Welded Connections

Applied Sciences

Dong-Keon Kim¹  TaeSoo Kim²  JunSu Kim²  YongHyun Cho³ 

[1] Department of Architectural Engineering, Dong-A University, Busan 49315, Korea;Department of Architectural Engineering, Hanbat National University, Daejeon 34158, Korea;University Core Research Center for Disaster-Free and Safe Ocean City Construction, Dong-A University, Busan 49315, Korea;

关键词: finite element analysis;    welded connection: lean duplex stainless steel;    stress triaxiality;    block shear fracture;   

DOI  :  10.3390/app11073283

来源: DOAJ

【 摘 要 】

The block shear equations specified in the current AISC specification for structural steel buildings and North American cold-formed steel design specifications are based on research results of carbon steel bolted connections. These equations were found to be inapplicable for the welded connections in the literature. This issue is primarily associated with the use of the incorrect assumption on block shear failure mechanism. The present paper examines the accuracy of various block shear equations available in the design specifications and in the literature. The paper also examines the shear hardening capacity and the level of tensile stress over the critical net area with the results of finite element analysis, in which the fracture simulation is considered. It shows that the block shear capacities of lean duplex stainless steel welded connections can be predicted accurately using tensile stress equal to 1.25F_u, as proposed in the literature.

【 授权许可】

Unknown