[1] Yan Huadong, Jin Hui,. Damage evolution analysis of cast steel GS-20Mn5Vbased on modified GTN model [J]. Journal of Southeast University (English Edition), 2018, 34 (3): 364-370. [doi:10.3969/j.issn.1003-7985.2018.03.012]

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Damage evolution analysis of cast steel GS-20Mn5Vbased on modified GTN model()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

34

Issue:

2018 3

Page:

364-370

Research Field:

Materials Sciences and Engineering

Publishing date:

2018-09-20

Info

Title:

Damage evolution analysis of cast steel GS-20Mn5Vbased on modified GTN model

Author(s):

Yan Huadong;  Jin Hui

Jiangsu Key Laboratory of Engineering Mechanics, Southeast University, Nanjing 211189, China
School of Civil Engineering, Southeast University, Nanjing 211189, China

Keywords:

cast steel;  Gurson-Tvergaard-Needleman(GTN)model;  damage evolution;  orthogonal test method;  optimal parameter combination

PACS:

TU512.9

DOI:

10.3969/j.issn.1003-7985.2018.03.012

Abstract:

A modified Gurson-Tvergaard-Needleman(GTN)model that accounts for the mixed(isotropic and kinematic)hardening of cast steel GS-20Mn5V was developed and implemented in the finite element program ABAQUS/Standard via a user-defined material subroutine UMAT. This model couples the stress state and damage evolution(pore volume fraction increase)by a classic method that assumes that the total void volume fraction is divided into a nucleation and a growth part. A parametric study was conducted to assess the effect of modified GTN model parameters on mechanical properties such as the nucleation, growth and coalescence of voids and to obtain the optimal parameter combination by the orthogonal test method. The predicted load-displacement curves of notched specimens with the optimal parameters are favorably compared to the experimental curves. Therefore, the modified GTN model can be used to predict the damage evaluation and fracture behavior of GS-20Mn5V.

References:

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Memo

Memo:

Biographies: Yan Huadong(1990—), female, Ph.D. candidate; Jin Hui(corresponding author), female, doctor, professor, jinhui@seu.edu.cn.
Foundation items: The National Key Research and Development Program of China(No.2017YFC0805103). the National Natural Science Foundation of China(No.51578137, 51438002, 51108075), the Open Research Fund Program of Jiangsu Key Laboratory of Engineering Mechanics.
Citation: Yan Huadong, Jin Hui.Damage evolution analysis of cast steel GS-20Mn5V based on modified GTN model[J].Journal of Southeast University(English Edition), 2018, 34(3):364-370.DOI:10.3969/j.issn.1003-7985.2018.03.012.

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