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Nonlinear analysis of portal frames
Author(s) -
Simitses G. J.,
Giri J.,
Kounadis A. N.
Publication year - 1981
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1620170110
Subject(s) - portal frame , structural engineering , nonlinear system , eccentricity (behavior) , path (computing) , parametric statistics , bending , path analysis (statistics) , mathematics , engineering , frame (networking) , computer science , physics , mechanical engineering , statistics , quantum mechanics , political science , law , programming language
Abstract A kinematically nonlinear analysis of unbraced, rigid‐jointed, portal frames, rotationally restrained at the base and subjected to eccentric concentrated and/or uniformly distributed loads, is presented. Through this analysis the complete behaviour, including the primary path and postbuckling path (whenever it exists), is evaluated. Moreover, through parametric studies, the effects of bar slenderness ratio, load eccentricity and amount of rotational restraint are assessed. Through this method it is also possible to assess the effect of member lengths and member lengths and member bending stiffnesses.