The Neutral Axis in Plastic Bending of Beams

by Aris Phillips,

Serial Information: Journal of the Engineering Mechanics Division, 1959, Vol. 85, Issue 4, Pg. 65-76

Document Type: Journal Paper


The motion of the neutral axis in symmetrical pure bending of beams in plasticity is discussed. Both perfectly plastic beams and beams with linear strain hardening are considered. A method is given by means of which it is possible to correlate in a simple manner the motion of the neutral axis with the motion of the elastic-plastic boundaries. Formulas are found for the motion of the neutral axis with increasing curvature. Conditions are established for reversal of direction of motion of neutral axis.

Subject Headings: Motion (dynamics) | Plastics | Bending (structural) | Beams | Symmetry | Plasticity | Linear functions | Strain

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