Change search
ReferencesLink to record
Permanent link

Direct link
Closed interface crack with singular spring stiffness model
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL.
Show others and affiliations
2007 (English)In: International Journal of Engineering Science, ISSN 0020-7225, E-ISSN 1879-2197, Vol. 45, no 2-8, 210-226 p.Article in journal (Refereed) Published
Abstract [en]

The singularity of the stress field at the tip of a partially closed interface crack is discussed based on a non-uniform spring stiffness model that includes an inverse function of the radial distance from the crack edge. The stress singularity is found to be governed by the coefficient of the inverse function, henceforth referred to as "stiffness intensity" due to its resemblance to the well-known stress intensity factor. Two distinct non-oscillatory singular stress fields, corresponding to Modes I and 11 deformations, respectively, are found to coexist. An oscillatory singularity may also appear, but only when the two stiffness intensities are close to each other. This means that the oscillatory singularity exists when the normal and tangential interactions between the upper and lower crack faces are close.

Place, publisher, year, edition, pages
2007. Vol. 45, no 2-8, 210-226 p.
Keyword [en]
interface crack, spring model, singularity, crack mechanics
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-37295DOI: 10.1016/j.ijengsci.2006.12.001ISI: 000249109900003ScopusID: 2-s2.0-34447617379OAI: diva2:432926
Available from: 2011-08-08 Created: 2011-08-08 Last updated: 2011-08-08Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Pecorari, Claudio
By organisation
Marcus Wallenberg Laboratory MWL
In the same journal
International Journal of Engineering Science
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 16 hits
ReferencesLink to record
Permanent link

Direct link