Journal of Failure Analysis and Prevention

, Volume 17, Issue 2, pp 321–329 | Cite as

Edge Fracture Prediction Using Uncoupled Ductile Fracture Models for DP780 Sheet

Technical Article---Peer-Reviewed

Abstract

This paper is a contribution to the prediction of edge fracture behavior using uncoupled ductile fracture models. A fully integrated simulation framework for the edge fracture prediction is proposed with the shear-induced pre-damage considered. User-defined material subroutines are coded with uncoupled ductile fracture models (Lou-Huh, Oh, Brozzo) incorporated, which are calibrated using the fracture strains of various loading paths. A series of 3D numerical simulations are performed and compared with the results of hole-expansion tests. The effects of pre-damage field and fracture models are analyzed and discussed.

Keywords

Edge fracture Ductile fracture Uncoupled model Finite element simulation Hole-expansion test 

Notes

Acknowledgments

Financial support from China Scholarship Council (No. 201506460060) is gratefully acknowledged. Thanks are also extended to Dr. Zhiqiang Sheng at University of Michigan, Professor Taylan Altan and Professor Farhang Pourboghrat at The Ohio State University for their helpful discussions.

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Copyright information

© ASM International 2017

Authors and Affiliations

  1. 1.School of Mechanical EngineeringUniversity of Science and Technology BeijingBeijingChina
  2. 2.College of EngineeringThe Ohio State UniversityColumbusUSA
  3. 3.Department of Metallurgical and Material and Materials EngineeringFederal University of Minas GeraisBelo HorizonteBrazil

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