Transient Response of Rotating Shaft in Sliding Bearings

This project investigates the transient response of a rotating shaft supported by sliding bearings using non-linear bearing force approximations.

Key Features:
- Slenderness Ratio and Critical Speed Estimation: Calculating the slenderness ratio and first critical speed using hand approximations and determining the Sommerfeld number for the sliding bearings.
- Unbalance Response: Analyzing the unbalance response (semi-major axis) at the bearings and mid-span using Guyan reduction techniques.
- Critical Speed Compliance with API612: Assessing the critical speed based on API612 standards and ensuring the system meets separation margin criteria.
- Orbits at Operating Speed: Visualizing the orbits of the shaft at the bearings and mid-span to evaluate its dynamic stability.
- Stability Threshold Estimation: Estimating the stability threshold using time-response analysis and identifying subcritical Hopf bifurcations.