Application of Extended Finite Element Method for Studying Crack Propagation of Welded Strip Steel in the Cold Rolling Process

被引：2

作者：

Chen, Jianjun ^{[1
]}

Wu, Chaojie ^{[1
]}

Ying, Jiacong ^{[1
]}

机构：

[1] East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

来源：

MATERIALS | 2023年 / 16卷 / 17期

关键词：

extended finite element method; crack propagation; welded strip steel; cold rolling; numerical simulation; EDGE CRACK; FRACTURE-TOUGHNESS; MECHANICAL-PROPERTIES; INDENTATION TECHNIQUE; DEFORMATION-BEHAVIOR; BALL INDENTATION; DAMAGE; MODEL; GROWTH; INITIATION;

D O I：

10.3390/ma16175870

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In the cold rolling process, edge cracks, particularly those near the welded zone, can inadvertently lead to strip rupture. This study employed the extended finite element method (XFEM) to analyze the crack propagation behavior in welded strip steel during cold rolling. Various tests such as the tensile test, essential work of fracture (EWF) test, spherical indentation method, and elastoplastic finite element simulations were conducted to determine the maximum principal stress and fracture energy utilized in XFEM for the base metal and weld metal, respectively. A continuous cold rolling model was established to investigate the crack propagation behaviors in the base metal, weld metal, and the interface between the base and weld metal. In the continuous rolling process, the crack propagation and expansion speed in the base metal are much larger than that of the weld zone. In addition, the base metal at the back end of the rolled piece is more prone to fracture than the base metal at the front end.

引用

页数：22

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