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Master curve in upper region of ductile brittle transition : A modification based on local damage approach

Tiwari, Abhishek ; Singh, R. N. ; Ståhle, Per LU and Chakravartty, J. K. (2016) In Procedia Structural Integrity 2. p.1553-1560
Abstract


The fracture behaviour of ferritic/ferritic martensitic steels in Ductile to Brittle Transition (DBT) region is well captured by Master Curve approach, except in the upper region of transition due to ductile tearing prior to cleavage. The fracture toughness behavior in the upper region of DBT is generally censored by Master Curve. In this work the Master Curve approach is modified to extend its applicability to the upper region of transition. The ductile tearing in the upper region of transition, increased sampled volume and constraint increment are addressed in this work using constraint parameter T
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The fracture behaviour of ferritic/ferritic martensitic steels in Ductile to Brittle Transition (DBT) region is well captured by Master Curve approach, except in the upper region of transition due to ductile tearing prior to cleavage. The fracture toughness behavior in the upper region of DBT is generally censored by Master Curve. In this work the Master Curve approach is modified to extend its applicability to the upper region of transition. The ductile tearing in the upper region of transition, increased sampled volume and constraint increment are addressed in this work using constraint parameter T
stress
and numerical analyses using GTN damage.

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Please use this url to cite or link to this publication:
author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
ABAQUS, ductile brittle transition, Local damage, Master Curve, VUMAT, Master curve, ductile brittle transition, Weibull triaxiality, Weibull statictics
in
Procedia Structural Integrity
volume
2
pages
8 pages
publisher
Elsevier
external identifiers
  • scopus:85065790464
ISSN
2452-3216
DOI
10.1016/j.prostr.2016.06.197
language
English
LU publication?
yes
id
fa3d9015-2f48-42ea-9876-36ab123d8750
date added to LUP
2019-06-04 09:44:05
date last changed
2022-01-31 21:25:46
@article{fa3d9015-2f48-42ea-9876-36ab123d8750,
  abstract     = {{<p><br>
                                                         The fracture behaviour of ferritic/ferritic martensitic steels in Ductile to Brittle Transition (DBT) region is well captured by Master Curve approach, except in the upper region of transition due to ductile tearing prior to cleavage. The fracture toughness behavior in the upper region of DBT is generally censored by Master Curve. In this work the Master Curve approach is modified to extend its applicability to the upper region of transition. The ductile tearing in the upper region of transition, increased sampled volume and constraint increment are addressed in this work using constraint parameter T                             <br>
                            <sub>stress</sub><br>
                                                          and numerical analyses using GTN damage.                         <br>
                        </p>}},
  author       = {{Tiwari, Abhishek and Singh, R. N. and Ståhle, Per and Chakravartty, J. K.}},
  issn         = {{2452-3216}},
  keywords     = {{ABAQUS; ductile brittle transition; Local damage; Master Curve; VUMAT; Master curve; ductile brittle transition; Weibull triaxiality; Weibull statictics}},
  language     = {{eng}},
  month        = {{01}},
  pages        = {{1553--1560}},
  publisher    = {{Elsevier}},
  series       = {{Procedia Structural Integrity}},
  title        = {{Master curve in upper region of ductile brittle transition : A modification based on local damage approach}},
  url          = {{http://dx.doi.org/10.1016/j.prostr.2016.06.197}},
  doi          = {{10.1016/j.prostr.2016.06.197}},
  volume       = {{2}},
  year         = {{2016}},
}