ON THE CALCULATIONS FOR THE STABILITY OF BEAMS, FRAMES, AND CYLINDRICAL SHELLS IN THE ELASTO-PLASTIC STAGE
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Abstract
The problems of stability of some beams, Π-shaped frames and cylindrical shells with the elasto-plastic material are considered. The possibility of modeling bars using finite elements of various types is studied. Plate elements and even one-dimensional beam finite elements can be used for modelling compressed rods with geometric and physical nonlinearity. For the problem of stability of a circular cylindrical shell is given the comparison of the authors' results obtained using the FEM with the experimental results of V.G. Sazonov and the calculations of A.V. Karmishin.
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