Accession Number : AD0783093

Title :   A New Model for Elastic-Plastic Trusses.

Descriptive Note : Technical rept.,

Corporate Author : MINNESOTA UNIV MINNEAPOLIS DEPT OF AEROSPACE ENGINEERING AND MECHANICS

Personal Author(s) : Hodge,Philip G. , Jr

Report Date : JUL 1974

Pagination or Media Count : 48

Abstract : The phenomenon of upper yield and lower yield for steel bars under uniaxial stress is well known but not fully understood. The actual behavior of a bar at stress levels between the two yield stresses will depend upon many minor variables which may not be controlled or even known, so that from a pragmatic point of view it is indeterminate. Several models are proposed in which the behavior of a bar in the indeterminate range is chosen for computational convenience. The models are applied to several examples, and their advantages and disadvantages are discussed. It is concluded that the specific models described are not reasonable tools for practical engineering problems, but that the concept is worthy of further study. (Author)

Descriptors :   *Trusses, *Steel, *Plastic properties, Mathematical models, Stresses

Subject Categories : Metallurgy and Metallography
      Structural Engineering and Building Technology
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE