Accession Number:

ADA270384

Title:

The Large-Deflection Pure Bending Properties of a Square Thin-Walled Tube

Descriptive Note:

Corporate Author:

MATERIALS RESEARCH LABS ASCOT VALE (AUSTRALIA)

Personal Author(s):

Report Date:

1993-01-01

Pagination or Media Count:

10.0

Abstract:

The moment-rotation properties of square thin-walled tubes were measured up to and beyond bending collapse with a unique bending machine that was capable of applying a pure bending moment to large deflections without significant shear or tensile forces. This allows an accurate determination of a tubes maximum moment and plastic behaviour prior to collapse, the rotation at which collapse is initiated, as well as the resulting collapse curve. The results were compared with existing analytical predictions. In addition, the finite length of the local plastic collapse mechanism was determined by adjusting the deformable length of the test specimens. The concept of a finite mechanism length is important for the purposes of modelling the behavior of structures such as bus frames that are commonly made from thin-walled tubes.

Subject Categories:

  • Surface Transportation and Equipment
  • Pumps, Filters, Pipes, Tubing, Fittings and Valves

Distribution Statement:

APPROVED FOR PUBLIC RELEASE