Imperfection Sensitivity Analysis of a Rectangular Column Compressed into the Plastic Range

Cheng Yaoshun; Fang Hong; Lu Wenda

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Cheng Yaoshun, Fang Hong, Lu Wenda. Imperfection Sensitivity Analysis of a Rectangular Column Compressed into the Plastic Range[J]. Applied Mathematics and Mechanics, 1998, 19(1): 8-14.

Citation:

Cheng Yaoshun, Fang Hong, Lu Wenda. Imperfection Sensitivity Analysis of a Rectangular Column Compressed into the Plastic Range[J]. Applied Mathematics and Mechanics, 1998, 19(1): 8-14.

Citation:

Cheng Yaoshun, Fang Hong, Lu Wenda. Imperfection Sensitivity Analysis of a Rectangular Column Compressed into the Plastic Range[J]. Applied Mathematics and Mechanics, 1998, 19(1): 8-14.

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Imperfection Sensitivity Analysis of a Rectangular Column Compressed into the Plastic Range

1.
College of Structural Engineering, Tongji University, Shanghai 200092, P.R. China;
2.
Department of Mechanical Engineering, East China University of Techanology, Shanghai 200093, P.R. China

Received Date: 1996-08-07
Publish Date: 1998-01-15

Abstract

Abstract

The effect of small geometrical imperfections on the buckling of a rectangular column compressed into the plastic range is studied. In the analysis, the effect of ealstic unloading is taken into account. An asymptotically exact relation is abtained among the load, the amplitude of imperfections and the amplitude of bifurcation mode. The results show that the maximum supported load is very sensitive to small imperfections, and that, however, there may not be maximum load if the imperfection amplitude is greater than some magnitude.
- plastic buckling,
- imperfection sensitivity,
- asymptotic expansion

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References(7)

References

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