Abstract:

The problem of limit carrying capacity for a frustum of comical shell under internal uniform pressufre is studied by using the basic method developed by D.C.Drucker and R.T.Shield[1] in this article, and according to an one moment limited interaction yield surface the complete solution is obtained，which is not more than the solution obtained by means of the energy ,method[2]，and is verified by experimental data provided by paperL[3].with the help of a microcomputer，coordinate parameters for determining unknown negative hinge circle positions are found by solving directly the algebraic equations，and the results obtained in this way are not in good agreement with those obtained by the approximate equation of paperf3l .On the other hand，the lower bound of true limit pressure for this frustum of conical shell is found according to a kind of inscribed limited interaction yield surface[4].