On the Dynamic Strength of Rigid-Plastic Beams under Blast Loads

by Mario G. Salvadori,
Paul Weidlinger,

Serial Information: Journal of the Engineering Mechanics Division, 1957, Vol. 83, Issue 4, Pg. 1-34

Document Type: Journal Paper


Upper bounds to the dynamic strength of simply-supported beams acted upon by a uniformly distributed blast pressure are obtained under the assumption of rigid-plastic behavior in bending and/or in shear (development of plastic hinges and/or plastic slides). The time variation of the blast pressure is approximated by a negative exponential time function with peak value at t = o. Maximum allowable values of the peak pressure are obtained for beams of rectangular and I section. The results of the present analysis are valid for other types of impulsive forces.

Subject Headings: Dynamic loads | Plastic hinges | Structural strength | Plasticity | Beams | Blasting effects | Shear strength | Flexural strength

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