NASA NTRS · 19860035973
The Dugdale model for compact specimen
Abstract
Plastic zone size and crack tip opening displacement (CTOD) equations were developed. Boundary collocation analyses were used to analyze the compact specimen subjected to various loading conditions (pin loads, concentrated forces, and uniform pressure acting on the crack surface). Stress intensity factor and crack surface displacement equations for some of these loadings were developed and used to obtain the Dugdale model. The results from the equations for plastic zone size and CTOD agreed well with numerical values calculated by Terada for crack length to width ratios greater than 0.4.
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Mall, S., Newman, J. C., Jr.. 1985-01-01. The Dugdale model for compact specimen. https://ntrs.nasa.gov/citations/19860035973
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