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On the crack extension force of curved cracks
2001 (English)In: Advances in fracture research: ICF : 10th international conference on fracture, Honolulu / [ed] K. Ravi-Chandar; T. Kishi; R.O. Ritchie; A.T. Yokobori Jr; T. Yokobori (Sr), Amsterdam: Elsevier, 2001Conference paper, Published paper (Refereed)
Abstract [en]

A domain independent integral is obtained from the principle of virtual work. A suitable choice of the virtual displacement field allows variation of the position of a crack tip. For materials possessing a strain energy function Eshelby's definition of the force on a point defect is used to obtain the crack extensioin force. The method is general and allows treatment of a crack whose surfaces and front are curved by unsing curvilinear coordinates. To illustrate the applicability of the method three examples of the point-wise crack extension force are given, with different combinations of crack surface and crack front curvature. A general expression of the crack extension force for curved cracks is suggested. In Cartesian coordinates the proposed expression reduces to the J-integral of Rice.

Place, publisher, year, edition, pages
Amsterdam: Elsevier, 2001.
National Category
Applied Mechanics
Research subject
Solid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-31135Local ID: 53658c10-faff-11db-b816-000ea68e967bISBN: 0080440428 (print)OAI: oai:DiVA.org:ltu-31135DiVA, id: diva2:1004365
Conference
International Conference on Fracture : 02/12/2001 - 06/12/2001
Note

Godkänd; 2001; Bibliografisk uppgift: CD-ROM; 20070505 (cira)

Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved

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Eriksson, Kjell

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