Title

On A Mixed-Mode Dugdale Model

Authors

D. W. Nicholson

Title - Alternative

Acta Mech.

Keywords

Mechanics

Abstract

A model attributed to Dugdale provides a correction for plasticity effects at crack tips in Mode I, under the assumption of small-scale yielding. Similar models have been proposed for Modes II and III, the former fairly recently. In the present study, the Dugdale model is extended to cases combining Modes I, II and III, based on the von Mises yield criterion. The combined model provides an a posteriori estimate for plasticity effects, based only on the stress intensity factors from the elasticity solution. It also provides an estimate for the crack-opening displacement and the J-integral value. In the limit of small loads, the corresponding elastic results are recovered.

Publication Title

Acta Mechanica

Volume

98

Issue/Number

1-4

Publication Date

1-1-1993

Document Type

Article

Language

English

First Page

213

Last Page

219

WOS Identifier

WOS:A1993KU58100015

ISSN

0001-5970

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