Accession Number:

AD0603105

Title:

PLASTIC DESIGN IN HIGH STRENGTH STEEL. THE INELASTIC BEHAVIOR OF BEAMS UNDER MOMENT GRADIENT,

Descriptive Note:

Corporate Author:

LEHIGH UNIV BETHLEHEM PA FRITZ ENGINEERING LAB

Personal Author(s):

Report Date:

1964-07-01

Pagination or Media Count:

43.0

Abstract:

The work examined the behavior of beams under moment gradient. It was shown that they behave very much as assumed in simple plastic theory. However, the existing analysis is based on lateral buckling considerations, whereas the chapter showed that local buckling will be the predominant effect. Hence it has been necessary to suggest changes in the existing provisions. For a large range of support spacing, a theory based on local buckling was used to show that the hinge angle which can be delivered is constant, and a simple lower bound expression was presented. Test results confirm the lower bound nature of the hinge angle theory, but there is an obvious need for further tests to define the limits within which the theory is applicable. It was shown that high shear forces in inelastic beams may have effects other than those previously considered. A prime consequence of high shear forces is to reduce the rotation capacity of the beam. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE