NDLI: Fracture mechanics analyses for interface crack problems - a review

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Fracture mechanics analyses for interface crack problems - a review

Content Provider	NASA Technical Reports Server (NTRS)
Author	Shivakumar, Kunigal Raju, Ivatury S. Krueger, Ronald
Copyright Year	2013
Description	Recent developments in fracture mechanics analyses of the interfacial crack problem are reviewed. The intent of the review is to renew the awareness of the oscillatory singularity at the crack tip of a bimaterial interface and the problems that occur when calculating mode mixity using numerical methods such as the finite element method in conjunction with the virtual crack closure technique. Established approaches to overcome the nonconvergence issue of the individual mode strain energy release rates are reviewed. In the recent literature many attempts to overcome the nonconvergence issue have been developed. Among the many approaches found only a few methods hold the promise of providing practical solutions. These are the resin interlayer method, the method that chooses the crack tip element size greater than the oscillation zone, the crack tip element method that is based on plate theory and the crack surface displacement extrapolation method. Each of the methods is validated on a very limited set of simple interface crack problems. However, their utility for a wide range of interfacial crack problems is yet to be established.
File Size	2399219
Page Count	35
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20130012939
Archival Resource Key	ark:/13960/t52g2qn4h
Language	English
Publisher Date	2013-04-08
Access Restriction	Open
Subject Keyword	Structural Mechanics Finite Element Method Plate Theory Crack Tips Carbonaceous Materials Fracture Mechanics Numerical Analysis Delaminating Failure Modes Cracking Fracturing Mathematical Models Crack Closure Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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