scholarly journals Minimum weight design of axially compressed ring and stringer stiffened cylindrical shells

1971 ◽  
Author(s):  
D. BLOCK
Keyword(s):  
Minimum Weight ◽  
Cylindrical Shells ◽  
Minimum Weight Design ◽  
Weight Design ◽  
Stiffened Cylindrical Shells

Minimum Weight Design of Stiffened Cylinders

1970 ◽  
Vol 21 (1) ◽  
pp. 49-68 ◽  
Author(s):  
C. Lakshmikantham ◽  
G. Gerard
Keyword(s):  
Stability Theory ◽  
Comparative Evaluation ◽  
Minimum Weight ◽  
Cylindrical Shells ◽  
Minimum Weight Design ◽  
Physical Picture ◽  
Weight Design ◽  
Similarities And Differences ◽  
Stiffened Cylindrical Shells

SummaryIn this paper a generalised presentation for symmetrically stiffened orthotropic cylinders under compression is developed, based on a linear orthotropic stability theory of cylinders. Similarities and differences in the minimum weight behaviour of stiffened cylindrical shells and flat transversely-stiffened wide columns are investigated in some detail to provide a satisfactory physical picture. The concluding results provide a comparative evaluation of various forms of stiffening systems for cylindrical shells under compression.

Minimum Weight Design of Cylindrical Shells

1956 ◽  
Vol 23 (4) ◽  
pp. 576-580
Author(s):  
Walter Freiberger
Keyword(s):  
Cylindrical Shell ◽  
Circumferential Strain ◽  
Minimum Weight ◽  
Cylindrical Shells ◽  
Axial Loading ◽  
Strain Rates ◽  
Minimum Weight Design ◽  
Variable Wall Thickness ◽  
Weight Design ◽  
Variable Wall

Abstract The theory of collapse and minimum weight design of cylindrical shells by Onat and Prager is applied in this paper to the development of a method for designing the variable wall thickness of a cylindrical shell under axial loading and arbitrary pressures to give maximum economy of material. The design is such that the shell does not fail plastically in the sense used in limit analysis. It will be assumed that the shell is supported at the ends by inextensible rings so that the circumferential strain rates vanish there.

Mathematical Programming Procedures for Mixed Discrete-Continuous Design Problems

1974 ◽  
Vol 96 (1) ◽  
pp. 201-209 ◽  
Author(s):  
M. Pappas ◽  
A. Allentuch
Keyword(s):  
Mathematical Programming ◽  
Minimum Weight ◽  
Nonlinear Problems ◽  
Continuous Variables ◽  
Minimum Weight Design ◽  
Design Problems ◽  
Mixed Variables ◽  
Discrete Search ◽  
Weight Design ◽  
Stiffened Cylindrical Shells

Two mathematical programming procedures for treating nonlinear problems involving mixed variables are presented. One involves a relatively simple concept. First an optimum is located treating all variables as continuous. Adjacent discrete points are then evaluated in order of increasing distance from the all-continuous optimum, each evaluation requiring an optimization of the continuous variables, if any, until a satisfactory design is found. The other method utilizes an optimal discrete search to locate the optimum. These procedures are applied to the minimum weight design of stiffened, cylindrical shells where they prove to be effective.

Minimum Weight Design of Ring Stiffened Cylinders Under External Pressure

1961 ◽  
Vol 5 (03) ◽  
pp. 44-49 ◽  
Author(s):  
George Gerard
Keyword(s):  
Yield Strength ◽  
Minimum Weight ◽  
External Pressure ◽  
Compressive Yield Strength ◽  
Minimum Weight Design ◽  
Weight Design

Minimum weight analyses for unstiffened and ring-stiffened cylinders under external pressure are presented for designs based on stability and compressive yield-strength considerations. The results for both types of cylinders are compared in terms of a common set of parameters to establish the efficiency of the stiffening system. The results are then compared on a somewhat different basis to establish the relative efficiencies of various classes of materials. Finally, certain conclusions are drawn of particular pertinence to deep submersibles.

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