Strength of small-scale spherical shells formed from pressed glass elements

Institute of Strength Problems, Academy of Sciences of the Ukrainian SSR, Kiev. Sumy Branch, Khar'kov Polytechnic Institute. Translated from Problemy Prochnosti, No. 8, pp. 102–104, August, 1989.     

Determination of deformations in zones of stress concentration using partitioning grids

A universal computational method of determining the strain state in zones of geometric stress risers from results obtained by the method of partitioning grids is proposed. The method is based on use of a modified quadratic element of the Lagrange family, which has intermediate nodes on the sides and inside the element that are displaced with respect to the center. The error generated in calculating extremal values of the strain components on the perimeter of a riser is investigated. It is demonstrated that it is minimal when the modified element is used. An example of the developed method is cited in determining strains in the zone of an opening in a flat plate subjected to uniaxial tension.Translated from Problemy Prochnosti, No. 12, pp. 99–104, December, 1990.     

Life and failure of systems of glass shells in complicated static and quasidynamic loading

The effect of the scale of shells on the resistance to avalanche failure of multielement systems in the conditions of complicated loading with uniform pressure and a hydraulic pulse is examined.Institute of Problems of Strength, Academy of Sciences of the Ukrainian SSR, Kiev. Sevastopol. Translated from Problemy Prochnosti, No. 9, pp. 59–62, September, 1989.