Model Updating and Global Eigenvalue Analysis of a Tie-Bolt Rotor Using Zero-Length Contact Elements under Different Preloads

<div>Optimized dimensionless stiffness and the residual error using the PSO algorithm.</div>

Shock and Vibration

Figure 9: Model Updating and Global Eigenvalue Analysis of a Tie-Bolt Rotor Using Zero-Length Contact Elements under Different Preloads 