In many examples in the preceding chapters we have seen that shells can be very thin-walled and that they very often are subjected to compressive stresses in extensive areas. The question arises whether the elastic equilibrium of such shells is stable. To answer this question, one of the standard methods of the theory of elastic stability must be applied : the method of adjacent equilibrium or the energy method. We shall explain here the basic ideas of both methods in the terminology of shells and then consider an Euler column to demonstrate their use.
KeywordsTorque Assure Eter Sine Librium
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