69 research outputs found
The Suppression of Transverse Vibrations of an Elastic Panel Moving Axially in a Fluid Flow
Instability of a Longitudinal Movement along the Cylindrical Surface for a Thermoelastic Web Simulated by Stretched and Heated String
Some problems of optimizing shell shape and thickness distribution on the basis of a genetic algorithm
An approximate analytical solution of the cylindrical detonation wave generated by the linear explosion
Axisymmetric shell optimization under fracture mechanics and geometric constraints
This paper describes a problem of axisymmetric
shell optimization under fracture mechanics and geometric
constraints. The shell is made from quasi-brittle materials,
and through crack arising is admitted. It is supposed that
the shell is loaded by cyclic forces. A crack propagation
process related to the stress intensity factor is described by
Paris fatigue law. The problem of finding the meridian shape
and the thickness distribution (geometric design variables)
of the shell having the smallest mass subject to constraints
on the cyclic number for fatigue cracks and geometrical con-
straint on the shell volume is investigated. Special attention
is devoted to different possibilities of problem transforma-
tion andanalytical methodsoftheir solution.Using minimax
approach, optimal shapes of the shells and their thickness
distributions have been found analytically
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