Effect of initial imperfection on the stability of compressible columns with load dependent support

Author

Sovizi, Javad ; Bahardoost, Moien ; Behbehan, Tooraj Samimi

Author_Institution

Mech. Eng. Dept., K. N. Toosi Univ. of Technol., Tehran, Iran

fYear

2010

fDate

10-12 Sept. 2010

Firstpage

273

Lastpage

277

Abstract

Stability is one of the serious problems associated with slender structural elements. Column is an important member of such elements that the study of its complex behavior is necessary due to their significant use in the structural applications. In this paper, the influence of initial imperfection on the stability of a compressible column with load-dependant support is studied. The column model is introduced, considering compressibility and load-dependant behavior of the support. The effect of initial imperfection is considered in the equilibrium equation of the column and the equilibrium paths are plotted in each state of reference support stiffness functions for specific imperfection magnitudes. In each state, the change of critical load of the column versus the values of the imperfection is extracted and the effect of initial imperfection on the stability of the column is discussed.

Keywords

compressibility; stability; structural engineering; supports; compressible columns stability; load dependent support; slender structural elements; stiffness functions; Compressible column stability; Critical load; Equilibrium paths; Initial imperfection;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechanical and Electrical Technology (ICMET), 2010 2nd International Conference on

Conference_Location

Singapore

Print_ISBN

978-1-4244-8100-2

Electronic_ISBN

978-1-4244-8102-6

Type

conf

DOI

10.1109/ICMET.2010.5598363

Filename

5598363