Speaker
Description
Thin-walled composite structures, valued for their lightweight potential, find extensive application in the aerospace and shipbuilding industries. However, the stability behavior of these structures needs to be considered. As a locally post-buckled structure demonstrates the capacity to withstand increasing loads without immediate failure, it necessitates not only a buckling analysis but also a post-buckling analysis to fully leverage its lightweight potential.
Many commonly used composites exhibit bending-twisting coupling effects, a significant factor influencing the buckling behavior. Despite this, computationally efficient buckling analyses often neglect bending-twisting coupling. To achieve optimized designs, it is crucial to employ analysis methods that consider these effects. Therefore, a Ritz method tailored for post-buckling analysis of rectangular simply supported plates featuring bending-twisting coupling is introduced. Derived based on energy methods, this approach enables the description of stability behavior, modeling deformation, load distributions, and characteristic quantities such as effective width. The novel computational model is utilized to evaluate the impact of nondimensional parameters associated with bending-twisting coupling on the buckling and post-buckling behavior of composite plates. This research contributes to the development of computationally efficient ritz-methods for designing optimized thin-walled composite structures. This is achieved by reducing the number of integrals to be evaluated and simultaneously efficiently tracing the equilibrium path in the post-buckling regime.
