Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.commatsci.2008.01.031
DC FieldValue
dc.titleCreep fracture toughness using conventional and cell element approaches
dc.contributor.authorTang, S.
dc.contributor.authorGuo, T.F.
dc.contributor.authorCheng, L.
dc.date.accessioned2014-06-17T06:15:56Z
dc.date.available2014-06-17T06:15:56Z
dc.date.issued2008-11
dc.identifier.citationTang, S., Guo, T.F., Cheng, L. (2008-11). Creep fracture toughness using conventional and cell element approaches. Computational Materials Science 44 (1) : 138-144. ScholarBank@NUS Repository. https://doi.org/10.1016/j.commatsci.2008.01.031
dc.identifier.issn09270256
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/59816
dc.description.abstractThe mechanical response of a polymeric material is loading rate sensitive especially near the glass transition temperature. In this work, the polymeric material is modeled as an elastic-nonlinear viscous solid. A computational scheme based on the finite element method is used to simulate steady-state crack growth in the polymeric material under plane strain mode I, small-scale yielding conditions. The scheme is validated by reproducing the Hui-Riedel singularity field around a steadily growing crack in the elastic-nonlinear viscous solid. It is observed that the Hui-Riedel singularity has a limited range of validity. Thereafter, two fracture approaches are employed to study viscoelastic creep crack growth. One is the conventional critical strain over critical distance ahead of the crack. The other is the cell element approach for crack growth caused by void growth and coalescence, in which the rate-dependent fracture process zone is represented by a nonlinear viscous microporous strip of cell elements. These cell elements are described by a Gurson-like micromechanics model recently proposed for void growth in nonlinear viscous matrix. The computed toughness-velocity curves using strain criterion exhibit mesh dependence while those obtained by cell element approach appear to be robust. © 2008 Elsevier B.V. All rights reserved.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.commatsci.2008.01.031
dc.sourceScopus
dc.subjectCrack tip fields
dc.subjectFracture mechanism
dc.subjectFracture toughness
dc.subjectPolymeric material
dc.subjectRate-dependence
dc.subjectViscoelastic
dc.typeArticle
dc.contributor.departmentMATERIALS SCIENCE AND ENGINEERING
dc.contributor.departmentMECHANICAL ENGINEERING
dc.description.doi10.1016/j.commatsci.2008.01.031
dc.description.sourcetitleComputational Materials Science
dc.description.volume44
dc.description.issue1
dc.description.page138-144
dc.description.codenCMMSE
dc.identifier.isiut000261392800027
Appears in Collections:Staff Publications

Show simple item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

1
checked on Aug 16, 2019

Page view(s)

65
checked on Aug 18, 2019

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.