第１部門③

[2A22-27-01] Free vibration analysis of anisotropic laminated plates by region-wise zig-zag theory

*Chikara Watanabe¹, Kaede Ochiai¹ (1. National Institute of Technology, Hakodate College)

Keywords:region-wise zig-zag theory, anisotropic laminated plate, free vibration, virtual lamina

In this study, a free vibration analysis method for anisotropic laminated plates using the region-wise zig-zag theory has been proposed. This theory is a theory that combine improved zig-zag theory and layer-wise theory in order to apply it to structures reinforced with composite materials. By setting the region in the plate thickness direction, accurate natural frequencies can be calculated effectively not only for out-of-plane vibration modes but also for in-plane vibration modes. The accuracy of this theory for moderately thick plates is investigated, and the method using virtual lamina is applied to the region-wise zig-zag theory to verify the accuracy for thick plates.