Treffer: Buckling Analysis and Multi-Objective Optimization of Extension-Shearing and Bending-Twisting Coupled Laminates with Four Sides Simply Supported.

The buckling analysis of multi-coupled laminates is of great significance for improving the mechanical properties and applicability of composite laminates, of which extension-shearing and bending-twisting coupled laminates (AFB0DF) are typical ones. The buckling analysis model of AFB0DF laminates with four sides simply supported was established. Firstly, based on the classical laminate theory (CLT), Kantorovich method, and transfer function method were used to solve the buckling load. The analytical solution of the governing equation for the buckling was obtained. Secondly, sequential quadratic programming (SQP) was used to complete the multi-objective optimization design of AFB0DF laminates with hygrothermal stability, and the buckling load of these laminates was also solved by finite element method to verify the correctness of the analytical solution. Meanwhile, the robustness of the theoretical model was tested by Monte Carlo method. Finally, an experiment on testing the buckling load of AFB0DF laminates was completed. The experimental results further verified the feasibility and reliability of this buckling analysis model established. [ABSTRACT FROM AUTHOR]