Adaptive finite element buckling analysis of folded plate structures

摘要

In this study, the finite element linear buckling analysis of folded plate structures using adaptive h-refinement methods was presented. CLS element, which possesses a drilling D.O.F., was found effective for the modeling of folded plate structures. In addition, the formulation of the stress stiffness matrix of CLS element was presented for the finite element buckling analysis. Accordingly, the folded plate structures, for which it is hard to find the analytical solutions, can be analyzed using the CLS elements. Using the adaptive h-refinement procedure, the finite element linear buckling analyses for those structures are found to be more accurate and efficient. As a result of analysis, the convergent buckling modes and the critical loads of these respective modes could be obtained.