IMPERFECTION SENSITIVITY ANALYSIS OF A RECTANGULAR COLUMN COMPRESSED INTO THE PLASTIC RANGE

Abstract

Abstract: The effect of small geometrical imperfections on the buckling of a rectangularcolumn compressed into the plastic range is studied in this paper. In the analysis. theeffect of elastic unloading is taken into account. An asymptotically exact relation isobtained among the load. the amplitude of imperfections and the amplitude of thebifurcation mode. The results show that foe maximum supported load is very sensitiveto small imperfections, and that, however, there may not be a maxim am load if theimperfection amplitude is greater than some magnitude.

Key words: plastic buckling, imperfection sensitivity, asymptotic expansion

Cheng Yaoshun;Fang Hong;Lu Wenda. IMPERFECTION SENSITIVITY ANALYSIS OF A RECTANGULAR COLUMN COMPRESSED INTO THE PLASTIC RANGE. Applied Mathematics and Mechanics (English Edition), 1998, 19(1): 9-14.

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IMPERFECTION SENSITIVITY ANALYSIS OF A RECTANGULAR COLUMN COMPRESSED INTO THE PLASTIC RANGE

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