Stochastic Principal Parametric Resonances of Composite Laminated Beams

Figure 12

Stationary probability density of the amplitude to different fiber orientation angles 𝜃₁ of the first lamina with respect to the 𝑥-axis of the beam, Ω=5.4200, 𝑓₀𝜔²=3.2642, and 𝛾=0.12.

(a) 𝜃₁=5^∘

(b) 𝜃₁=15^∘