Imperfection-sensitivity in the plastic range |
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Authors: | JW Hutchinson |
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Institution: | Division of Engineering and Applied Physics, Harvard University, Cambridge, MassachusettsUSA |
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Abstract: | The effect of small imperfections on the buckling of continuous structures loaded into the plastic range is studied. A simple model study is presented and several additional examples are discussed. The rôle of the load at which elastic unloading first occurs is emphasized, and a general asymptotic analysis is given for the behavior prior to the onset of elastic unloading for a class of elastic-plastic solids subject to loads characterized by a single load parameter. Asymptotic imperfection-sensitivity formulae are obtained whose features are similar to analogous formulae for elastic structures. |
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