Nonlinear Dynamic Analysis of a Timoshenko Beam Resting on a Viscoelastic Foundation and Traveled by a Moving Mass

Figure 6

Variation of dimensionless instantaneous dynamic lateral deflection, 𝑤_𝑝/𝑤_𝑠, versus normalized instantaneous position of moving mass, 𝑥/𝑙, of the Timoshenko beam traveled at different speeds with 𝑚=3𝜌𝐴𝑙 kg, 𝑘₁=10⁴ N/m², 𝑐=10³ N·s/m², and 𝛽=0.3; (- - - - -) M-1 model, (—) M-2, or M-3 model with 𝑘₃=10²¹ N/m⁴.