ISSN: 1945-7553
CODEN: JTEVAB
Page Count: 6

The Influence of Friction on the Compliance and Crack Work Rate of an End Notched Flexure Specimen

Gradin, PA
Senior Researcher, Swedish Plastics and Rubber Institute, Sundsvall,

Gustafson, CG
Professor, The Norwegian Institute of Technology, Trondheim,

Hojo, M
Senior Researcher, Industrial Products Research Institute, Ibaraki,

(Received 7 March 1990; accepted 10 September 1990)

Abstract

The influence of friction on the compliance and crack work release rate of an end notched flexure (ENF) specimen is investigated. The analysis includes asymmetric ENF configurations (i.e., when the crack is not on the specimen center line).

The contact problem (i.e., the problem of determining the contact stress distribution between the cracked parts of the specimen) is solved using the assumption that Euler beam theory is applicable (i.e., transverse shear is not accounted for) and that friction is fully developed whenever acting. The numerical results from an analysis carried out on a realistic specimen geometry indicate that for this model the friction has a minor influence on both the compliance and the crack work rate.

Keywords:
end notched flexure test, friction, delamination crack growth, crack work release rate, compliance

Paper ID: JTE12546J
DOI: 10.1520/JTE12546J
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