Anti-buckling design of variable stiffness composite cylinder under combined loading based on the multi-objective optimization method

2018 International Conference on Material Strength and Applied Mechanics

材料科学;力学

Zheng, Y.^1,2 ; Chen, J.^1,2

Department of Mechanics, Huazhong University of Science and Technology, Wuhan

430074, China^1

Hubei Key Laboratory for Engineering Structural Analysis and Safety Assessment, Wuhan

430074, China^2

关键词: Buckling capacity;    Combined loading;    Composite cylinders;    Design spaces;    Loading capacities;    Optimal design;    Variable stiffness;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/372/1/012034/pdf
DOI  :  10.1088/1757-899X/372/1/012034

来源: IOP

【 摘 要 】

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.