WIT Press


Analysis Of Ductile Crack Growth By Means Of A Damage Yield Strip Model

Price

Free (open access)

Paper DOI

10.2495/LD960441

Volume

13

Pages

8

Published

1996

Size

721 kb

Author(s)

J. Hohe & D. Gross

Abstract

Based on Gurson's continuum damage model, a damage cohesive zone model of the Dugdale-Barenblatt-type is developed. The model is applied to de- scribe quasi-static crack growth in a compact tension specimen and dynamic crack propagation under small-scale-yielding conditions. Crack tip and co- hesive zone parameters are calculated as functions of crack advance and crack tip velocity. In both cases, the algorithm is numerically stable and rather efficient. A direct mesh dependence of the results is not observed. 1 Introduction The application of material models including damage effects to the analysis of propagating cracks has the advantage that no external fracture crite- rion based on macroscopic parameters like J-Integral or 6c is required. The description of the fracture process by the total l

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