Free Vibrations of Beam System Structures with Elastic Boundary Conditions and an Internal Elastic Hinge

Figure 7

Effect of 𝑇_𝑢 on the first five natural frequency coefficients. 𝑙₂=𝑙₃, 𝑣_𝑙1=𝑣_𝑙2=0.5, 𝑣_𝐸𝐼(2)=𝑣_𝐸𝐼(3)=1, 𝑣_𝜌𝐴(2)=𝑣_𝜌𝐴(3)=1, 𝑅_𝑚→∞, 𝑅_𝑧=0, and 𝑇_𝑤→∞.