SYMPOSIA PAPER Published: 01 January 1990

Method and Models for -Curve Instability Calculations


This paper presents a simple method for performing elastic R-curve instability calculations. For a single material-structure combination, the calculations can be done on some pocket calculators. On microcomputers and larger, it enables the development of a comprehensive program having libraries of driving-force equations for different configurations and R-curve model equations for different materials. The paper also presents several model equations for fitting to experimental R-curve data, both linear elastic and elasto-plastic. The models are fit to data from the literature to demonstrate their viability.

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Orange, TW
NASA Lewis Research Center, Cleveland, OH
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Developed by Committee: E08
Pages: 545–559
DOI: 10.1520/STP19013S
ISBN-EB: 978-0-8031-5134-5
ISBN-13: 978-0-8031-1299-5