Limit and Post-Limit Behavior of Space Trusses

Yang, Bin; Guo, Da-Zhang; Lui, Eric M.; ,

Limit and Post-Limit Behavior of Space Trusses

by Bin Yang, Syracuse Univ, Syracuse, United States,
Da-Zhang Guo, Syracuse Univ, Syracuse, United States,
Eric M. Lui, Syracuse Univ, Syracuse, United States,

Document Type: Proceeding Paper

Part of: Mechanics Computing in 1990's and Beyond

Abstract:

A numerical technique for the nonlinear analysis of space trusses taking into consideration such factors as load-eccentricity, initial crookedness of the member and nonlinear stress-strain relationship of the material is presented. The technique can be used to trace the load-deflection behavior of the structure from the onset of loading to the limit load and beyond. The method of analysis encompasses two stages. In the initial stage a member analysis is performed in which a numerical integration scheme is used to derive the nonlinear axial load-deformation relationship of each member. In the second stage of analysis a modulus modification method is used to trace the nonlinear load-deflection behavior of the structure. The validity of the method is demonstrated by comparing the numerical results obtained using the proposed method with test results of space trusses.

Return to search