Dynamic Stability Analysis of the Laminated Composite Curved Frame Structures

Abstract

In this study, the dynamic stability analysis of the laminated composite single-bay and two-bay curved frame structures has been investigated. For this purpose, a computer code is written in MATLAB to evaluate the natural frequency values, critical buckling load, and first unstable regions of the laminated composite curved frames. The effects of radii of curvature and stacking order on the static and dynamic stability of both single and two bay arch frame structures are investigated. Besides, the effects of the stacking order are investigated by considering five different stacking sequences. The results of the present study are compared with the results obtained numerically via ANSYS for validation. It is concluded that the radius of curvature has a small effect on the first five natural frequency values, buckling loads, first unstable regions of the structure, whereas the fiber orientation considerably has a considerable impact on such static and dynamic properties.

Keywords

• dynamic stability
• finite element method
• curved composite frames
• vibration
• buckling
• dinamik kararlılık
• sonlu elemanlar yöntemi
• eğri kompozit çerçeveler
• titreşim
• burkulma