Mesh size effects on fracture locus of high strength bolts

A mesoscale critical equivalent plastic strain (MCEPS) approach

Journal article (2022)

Authors

Jie Li Xi’an Jiaotong University
Haohui Xin Xi’an Jiaotong University
J.H.G. Correia Electronic Instrumentation - EEMCS , Xi’an Jiaotong University, Universidade do Porto
Filippo Berto Norwegian University of Science and Technology (NTNU), Xi’an Jiaotong University
Bingzhen Zhao Future City Innovation Technology Co.
Yanwei Bo Shaanxi Steel Structures Construction Engineering Co.
M. Veljkovic Steel & Composite Structures - CEG
Research Group
Steel & Composite Structures (CEG) (TU Delft)
Copyright: © 2022 Jie Li, Haohui Xin, J.H.G. Correia, Filippo Berto, Bingzhen Zhao, Yanwei Bo, M. Veljkovic
DOI
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https://doi.org/10.1016/j.engfailanal.2022.106385
Ductile fracture Finite element simulation High strength bolts Mesh size sensitivity
More Info
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Published Date

2022

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Engineering Structures

Research Group

Steel & Composite Structures

Abstract

With the improvement of computational capability, finite element simulation is an increasingly practical method to accurately predict the ultimate capacity and ductile fracture behavior of high-strength bolts. However, the mesh size affects the results of FE simulations but related research on mesh size effects is relatively limited. In the present contribution, the mesoscale critical equivalent plastic strain (MCEPS) is used as a failure index for calibrating the parameters of ductile fracture locus of high-strength bolts with different mesh sizes. The identified fracture locus is compared with a large bulk of experimental data taken from the previously published literature. The results showed that mesh size can have high effects on the calibrated parameters of the plastic constitutive relationship after necking and ductile fracture locus of high-strength bolts.