Application of Resistance Curves to Residual Strength Prediction

[+] Author and Article Information
M. M. Ratwani, D. P. Wilhem

Northrop, Corp., Hawthorne, Calif.

J. Eng. Mater. Technol 100(2), 138-143 (Apr 01, 1978) (6 pages) doi:10.1115/1.3443462 History: Received July 01, 1977; Revised November 02, 1977; Online August 17, 2010


A resistance curve approach to predicting residual strength of thin-skin structures, under plane stress type fracture, is discussed. Use is made of material resistance obtained in terms of crack extension as a function of the square root of J (JR). Prediction has been made of the residual strength of two types of structures, namely stiffened aircraft panels and thin-wall cylindrical pressure vessels. Elastic-plastic analysis based on a Dugdale-type strip plastic zone is used in the residual strength prediction. The analytical results are compared with available experimental data.

Copyright © 1978 by ASME
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