Research Article

A Finite Element Formulation for Bending-Torsion Coupled Vibration Analysis of Delaminated Beams under Combined Axial Load and End Moment

Figure 6

Changes of the nondimensional first and second natural frequencies (λ2) with respect to normalized buckling load P0/Pcr for H2/H = 0.3, Mzz/Mb = 0.4, and different values of L2/L.