On Stability of Stiffened Cylindrical Shells with Varying Material Properties

The static stability analysis of stiffened functionally graded cylindrical shells by isotropic rings and stringers subjected to axial compression is presented in this paper. The Young's modulus of the shell is taken to be function of the thickness coordinate. The fundamental relations, the equilibrium and stability equations are derived using the Sander's assumption. Resulting equations are employed to obtain the closed-form solution for the critical axial loads. The effects of material properties, geometric size and different material coefficient on the critical axial loads are examined. The analytical results are compared and validated using the finite element model.

Authors:

• M. Karami Khorramabadi
• P. Khazaeinejad

Keywords:

• Functionally graded material
• Stability
• Stiffened cylindrical shell
• Finite element analysis

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