GENERALIZATION OF THE CLASSICAL FORMULA
OF STABILITY OF CYLINDRICAL SHELLS
TO THE CASE OF SPIRAL STIFFENERS

B. V. Nerubailo and M. V. Mochalov

UDC 539.3

The stability of a cylindrical shell with eccentric spiral 
stiffeners in the case of axial compression is considered. A simple 
computational formula for determination of the critical stress has 
been obtained. The formula contains all the necessary mechanical and 
geometric characteristics of the shell and the stiffeners and is, 
in essence, a generalization of the well-known and widely used classical 
formula for isotropic smooth shells.

Moscow State Aviation Institute (Technical University), 
4 Volokolamskoe Shosse, Moscow, 125871, Russian; email: borisn@km.ru. 
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 78, No. 4, pp. 
197-200, July-August, 2005. Original article submitted January 
20, 2004; revision submitted June 29, 2004.