A New Displacement-Type Stability Equation and General Stability Analysis of Laminated Composite Circular Conical Shells with Triangular Grid Stiffeners

Wang Hu; Tsun-kuei

Volume 12 Issue 4

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Article Navigation > Applied Mathematics and Mechanics > 1991 > 12(4): 359-368

Wang Hu, Tsun-kuei. A New Displacement-Type Stability Equation and General Stability Analysis of Laminated Composite Circular Conical Shells with Triangular Grid Stiffeners[J]. Applied Mathematics and Mechanics, 1991, 12(4): 359-368.

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A New Displacement-Type Stability Equation and General Stability Analysis of Laminated Composite Circular Conical Shells with Triangular Grid Stiffeners

Wang Hu,
Tsun-kuei

Beijing University of Aeronautics and Astronautics, Beijing

Received Date: 1989-12-16
Publish Date: 1991-04-15

Abstract

Abstract

In this paper,based on the theory of Donnell-type shallow shell,a new displacement-type stability equations is first developed for laminated composite circular conical shells with triangular grid stiffeners by using the variational calculus and generalized smeared-stiffener theory.The most general bending stretching couplings,the effect of eccentricity of stiffeners are considered.Then,for general stability of composite triangular grid stiffened conical shells without twist coupling terms,the approximate formulas are obtained for critical external pressure by using Galerkin's procedure.Numerical examples for a certain C/E composite conical shells with inside triangular grid stiffeners are calculated and the results are in good agreement with the experimental data.Finally,the influence of some parameters on critical external pressure is studied.The stability equations developed and the formulas for critical external pressure obtained in this paper should be very useful in the astronautical engineering design.
- general stability,
- composite materials,
- circular conical shells,
- triangular grid stiffeners,
- Galerkin’s procedure

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References(26)

References

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