Abstract
Variable stiffness composite structures take full advantages of composite's design ability. An enlarged design space will make the structure's performance more excellent. Through an optimal design of a variable stiffness cylinder, the buckling capacity of the cylinder will be increased as compared with its constant stiffness counterpart. In this paper, variable stiffness composite cylinders sustaining combined loadings are considered, and the optimization is conducted based on the multi-objective optimization method. The results indicate that variable stiffness cylinder's loading capacity is increased significantly as compared with the constant stiffness, especially when an inhomogeneous loading is considered.
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