EXPERIMENTAL STUDIES OF BUCKLING OF A HYPERBOLOIDAL SHELL SUBJECTED TO AN AXISYMMETRIC LOAD ACTING ON THE EDGES (BADANIA DOSWIADCZALNE WYBOCZENIA POWLOKI HIPERBOLOIDALNEJ OBCIAZONEJ NA BRZEGU OSIOWO-SYMETRYCZNIE).
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH
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In the first and second chapter of Wianecki, Stability of a Hyperboloidal Shell of Revolution Loaded Axisymmetrically on Edges Wianecki, Stability of a Hyperboloidal Shell of Revolution Under a Uniformly Distributed Load on Its Edges Which is Symmetrical with Respect to the Axis, the general differential equations of stability of a hyperboloidal shell of revolution loaded on the edges axisymmetrically, were derived. The three homogeneous partial differential equations of the eighth order, because of the three components of displacement u, v, w, were expressed for more clarity as a single matrix equation, and a table of the vectors and the values of the corresponding coefficients was supplied. In order to find an appropriate basis for the simplification of the above equations, the author conducted experiments, which allowed him to replace the complicated equations with approximate equations of stability of much greater simplicity. In this study only the final form of these equations are given the reader is referred to the above cited works. The experimental investigation described in this article was also intended to confirm whether the accepted linear theory of shells can constitute an adequate model for the computation of critical loads. This investigation conducted in such a fashion as to guarantee the theoretically predicted skin condition in the shell proved the correctness of this hypothesis.