Versatile Elastic-Plastic Stress-Strain Formulaby Ralph M. Richard,
Barry J. Abbott,
Serial Information: Journal of the Engineering Mechanics Division, 1975, Vol. 101, Issue 4, Pg. 511-515
Document Type: Journal Paper
Abstract: In the analysis of nonlinear structural systems, the stress-strain (force-deflection moment-rotation) relationship must be represented mathematically. The most simple representation is a series of straight lines. An alternative procedure is to fit a smooth analytical expression to the expression is the Ramberg-Osgood three-parameter polynomial which gives strain explicitly in terms of stress.
Subject Headings: Stress analysis | Stress strain relations | Structural systems | Nonlinear analysis | Nonlinear response | Displacement (mechanics) | Moment (mechanics)
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