Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.ijsolstr.2007.01.002
DC FieldValue
dc.titlePressure-sensitive ductile layers - II. 3D models of extensive damage
dc.contributor.authorChew, H.B.
dc.contributor.authorGuo, T.F.
dc.contributor.authorCheng, L.
dc.date.accessioned2014-06-17T06:31:36Z
dc.date.available2014-06-17T06:31:36Z
dc.date.issued2007-08-01
dc.identifier.citationChew, H.B., Guo, T.F., Cheng, L. (2007-08-01). Pressure-sensitive ductile layers - II. 3D models of extensive damage. International Journal of Solids and Structures 44 (16) : 5349-5368. ScholarBank@NUS Repository. https://doi.org/10.1016/j.ijsolstr.2007.01.002
dc.identifier.issn00207683
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/61149
dc.description.abstractThe mechanisms of void growth and coalescence in ductile polymeric layers, taking into account the effects of pressure-sensitivity, α, and plastic dilatancy, β, are explored in this two-part paper. In Part I, a two-dimensional model containing discrete cylindrical voids was used to simulate void growth and coalescence ahead of a crack. This paper extends the previous work by explicitly modeling initially spherical voids in a three-dimensional configuration. Damage predictions from the present 3D model for low yield strain adhesives are found to be in good agreement with both the 2D model in Part I and the computational cell element model. Significant discrepancies in the damage predictions, however, exist among all three models for high yield strain adhesives (e.g. polymers). The present 3D study also discusses the increasing damage level and its spatial extent with pressure-sensitivity, as well as the exacerbation of these effects arising from the deviation from an associated flow rule. In fact, both high porosity and high pressure-sensitivity promote void interaction. In addition, pressure-sensitivity increases the oblacity of the voids and reduces the intervoid ligament spacing over a wide range of load levels. These effects are compounded as the fracture process zone thickness decreases relative to the adhesive thickness. Results further show that both the adhesive toughness levels and the critical porosity governing the onset of void coalescence are significantly lowered with increasing pressure-sensitivity. © 2007 Elsevier Ltd. All rights reserved.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.ijsolstr.2007.01.002
dc.sourceScopus
dc.subjectDiscrete voids
dc.subjectIntervoid ligament
dc.subjectPolymers
dc.subjectVoid growth
dc.subjectVoid shape
dc.typeArticle
dc.contributor.departmentMATERIALS SCIENCE AND ENGINEERING
dc.contributor.departmentMECHANICAL ENGINEERING
dc.description.doi10.1016/j.ijsolstr.2007.01.002
dc.description.sourcetitleInternational Journal of Solids and Structures
dc.description.volume44
dc.description.issue16
dc.description.page5349-5368
dc.identifier.isiut000248168600018
Appears in Collections:Staff Publications

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

SCOPUSTM   
Citations

8
checked on Apr 14, 2021

WEB OF SCIENCETM
Citations

8
checked on Apr 14, 2021

Page view(s)

75
checked on Apr 13, 2021

Google ScholarTM

Check

Altmetric


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